x402 List Submit a serviceSubmit

Agent Embassy

payment-readyonline

payment-ready until 2026-11-14

Agents pay for work and prove what happened.

Call it x402 v2

x402 v2

Base URL
https://aemb.pro
Payment
x402 v2, header channel
$ curl -i 'https://aemb.pro/v1/markets/compute/spot'

An unpaid request returns HTTP 402 with the payment terms. Sign a payment authorization, then retry with the PAYMENT-SIGNATURE header.

Endpoints 17 paid routes on aemb.pro

POST/v1/agent-id/issueArbitrum One+Base$0.25since 10-04
POST/v1/agent-id/renewArbitrum One+Base$0.25since 10-04
POST/v1/agent-id/revokeArbitrum One+Base$0.25since 10-04
POST/v1/agent-id/verifyArbitrum One+Base$0.25since 10-04
POST/v1/assurance/checkArbitrum One+Base$0.25since 10-04
POST/v1/certArbitrum One+Base$0.25since 10-04
POST/v1/check/proveArbitrum One+Base$0.25since 10-04
POST/v1/check/proveit-verifiedArbitrum One+Base$0.25since 10-04

9 more in Example 402 response

Prices as captured in the 402 response: median $0.25 across the 17 endpoints.

Example 402 response

Endpoints and prices

Current paid endpoints; minimum quoted prices in USD where available; first capture dates in UTC
MethodPathDescriptionPriceNetworkAsset402 channelCaptured
POST/v1/agent-id/issueIssue an Agent ID: attestation binding a pubkey to a verified principal · unverifiable are refused. validity_days defaults to standard. Verify: agentid_verify. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402$0.25Arbitrum One+BaseUSDC, USD Coinheadersince 10-04
POST/v1/agent-id/renewRenew an Agent ID: fresh ID, same chain; the old retires. Sign like a revocation. validity_days defaults to standard. Retire outright: agentid_revoke. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402$0.25Arbitrum One+BaseUSDC, USD Coinheadersince 10-04
POST/v1/agent-id/revokeRetire an Agent ID instantly, with no successor: sign as the revocation_signature field specifies · who signs, and how. Fresh ID, same chain: agentid_renew. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402$0.25Arbitrum One+BaseUSDC, USD Coinheadersince 10-04
POST/v1/agent-id/verifyAgent ID state · valid, revoked, expired, or unknown · chain + envelope included. Unknown IDs: unknown, never error. Issue: agentid_issue; extend: agentid_renew. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402$0.25Arbitrum One+BaseUSDC, USD Coinheadersince 10-04
POST/v1/assurance/checkAction gate: endpoint, action, amount, permissions probed unpaid · ALLOW, RESTRICT, ASK_HUMAN, or QUARANTINE. Verdict: trust_report. Terms: trust_preflight. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402$0.25Arbitrum One+BaseUSDC, USD Coinheadersince 10-04
POST/v1/certProve a document existed: send its SHA256 hash · we never see it · for a signed, hash-chained attestation. document_name is an optional label. Live URLs: check_url_custom. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402$0.25Arbitrum One+BaseUSDC, USD Coinheadersince 10-04
POST/v1/check/proveProof anyone can verify: one fetch, transcript sealed in a signed receipt · HTTP 200 at that moment, fixed at 200. Your own conditions instead: check_url_custom. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402$0.25Arbitrum One+BaseUSDC, USD Coinheadersince 10-04
POST/v1/check/proveit-verifiedGPU price, sealed proof: snapshot, cheapest ask/class, signed receipt. type defaults ondemand; omit gpu = all classes. Raw: compute_spot_prices. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402$0.25Arbitrum One+BaseUSDC, USD Coinheadersince 10-04
POST/v1/check/verifyYour conditions, one fetch: status, substring, JSON value · signed pass/fail receipt. Default status 200. Public proof: check_url_sealed. Watch: check_url_changes. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402$0.001Arbitrum One+BaseUSDC, USD Coinheadersince 09-23
POST/v1/copy/correct$1.00 correction pass on your draft: formatting, links verified live, terms confirmed, leaks scanned · corrected copy + signed report. register sets the voice. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402$1.00Arbitrum One+BaseUSDC, USD Coinheadersince 10-04
POST/v1/markets/compute/alertsGPU price moves that matter: significant spot moves, in a signed receipt. limit defaults to 25. Live snapshot: compute_spot_prices. Past: compute_history. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402$0.25Arbitrum One+BaseUSDC, USD Coinheadersince 10-04
POST/v1/markets/compute/historyGPU market memory: cheapest and median asks per class, in a signed receipt. limit defaults to 50. Live: compute_spot_prices. Moves: compute_alerts. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402$0.25Arbitrum One+BaseUSDC, USD Coinheadersince 10-04
GET/v1/markets/compute/spotCompute market snapshot · observed spot prices: cheapest rentable ask per GPU class in USD/hour. $0.25 per query via x402 USDC on Base, Arbitrum One, or Algorand. Asks are ephemeral · re-observe before any decision. Paid output (shape only, no values): {market, generated_at, classes: [{gpu_class, cheapest_rentable, median_price_per_gpu_hour_usd}], caveats}. One payment buys one fresh observation; values are yours only after the payment settles.$0.25Arbitrum One+BaseUSDC, USD Coin, UNKNOWNheadersince 10-04
POST/v1/preflight/checkBefore paying: who is paid, what's delivered, what changed · signed verdict against your policies. Free quote: dry_run=true. Endpoint verdict: trust_report. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402$0.25Arbitrum One+BaseUSDC, USD Coinheadersince 10-04
POST/v1/recovery/registerEscrow an encrypted recovery blob: stored opaquely · we cannot decrypt it · for operator review, signed receipt proving its hash; quorum_rules govern release. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402$1.00Arbitrum One+BaseUSDC, USD Coinheadersince 09-23
POST/v1/research/paperThe research paper: $222.00; $444.00 with the provenance pack · paper plus its proof. bundle defaults to paper; prior receipt: $222.00 upgrade. Licensed to your wallet. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402$222.00Arbitrum One+BaseUSDC, USD Coinheadersince 10-04
POST/v1/trust/reportBuy/don't-buy verdict on an x402 endpoint: probed unpaid, signed PROCEED, VERIFY_FIRST, or DO_NOT_PAY. Terms: trust_preflight. Action gate: trust_assurance. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402$0.25Arbitrum One+BaseUSDC, USD Coinheadersince 10-04

Payment evidence

402 payload captured at . Check evidence JSON · Measurement methodology.

First of 17 payloads captured by the monitor.

154 lines, scroll inside

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "31566704",
      "extra": {
        "feePayer": "ZMFK2OI7ZBD2U27ISERZC4S6LKM6WMFJPZQ4MYNJDZ2VNBNMBA67RA22AA"
      },
      "payTo": "Z6VP4LNT6UJO5FH5EPWYPBH7U272Y7KYY7TJCWTTJUNAC3AWCWQ2DSDY2E",
      "amount": "250000",
      "scheme": "exact",
      "network": "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://aemb.pro/v1/markets/compute/spot",
    "tags": [
      "gpu spot prices",
      "compute market"
    ],
    "iconUrl": "https://aemb.pro/favicon.png",
    "mimeType": "",
    "description": "Compute market snapshot — observed spot prices: cheapest rentable ask per GPU class in USD/hour. $0.25 per query via x402 USDC on Base, Arbitrum One, or Algorand. Asks are ephemeral — re-observe before any decision. Paid output (shape only, no values): {market, generated_at, classes: [{gpu_class, cheapest_rentable, median_price_per_gpu_hour_usd}], caveats}. One payment buys one fresh observation; values are yours only after the payment settles.",
    "serviceName": "Agent Embassy"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {}
        },
        "output": {
          "type": "json",
          "example": {
            "note": "prices are ephemeral asks, not delivered-cost guarantees",
            "observed_at": "2026-09-21T00:00:00Z",
            "cheapest_ask_usd_per_gpu_hour": {
              "h100_sxm": 1.79,
              "rtx_4090": 0.14
            }
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "properties": {}
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      }
    },
    "builder-code": {
      "info": {
        "a": "bc_b8fwf0kk"
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "a": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "App builder code"
          },
          "s": {
            "type": "array",
            "items": {
              "type": "string",
              "pattern": "^[a-z0-9_]{1,32}$"
            },
            "maxItems": 11,
            "description": "Service builder codes"
          },
          "w": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "Wallet builder code"
          }
        },
        "additionalProperties": false
      }
    },
    "eip2612GasSponsoring": {},
    "erc20ApprovalGasSponsoring": {}
  },
  "x402Version": 2
}
Other captured 402 responses (16)

Captured payload 2 of 17

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "1000000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "1000000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://aemb.pro/v1/copy/correct",
    "mimeType": "application/json",
    "description": "$1.00 correction pass on your draft: formatting, links verified live, terms confirmed, leaks scanned — corrected copy + signed report. register sets the voice. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402",
    "serviceName": "Agent Embassy"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "draft": "hi!! it's us — Agent Embassy (https://aemb.pro).",
            "links": [
              "https://aemb.pro"
            ],
            "register": "bright-soft-junior",
            "required_terms": [
              "pro.aemb"
            ],
            "idempotency_key": "05eb1794-e858-4d4c-929e-df7f8a9929b2"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "tool": "correct_copy",
            "chain": [
              "request",
              "authorization",
              "action",
              "proof",
              "liability_boundary"
            ],
            "status": "complete",
            "account": "0x1111111111111111111111111111111111111111",
            "verdict": "clean",
            "receipt_id": "emb_xyz789",
            "receipt_version": "embassy-receipt/2"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "draft",
                  "register",
                  "idempotency_key"
                ],
                "properties": {
                  "draft": {
                    "type": "string",
                    "description": "The raw draft copy to correct (1-20000 chars)"
                  },
                  "links": {
                    "type": "array",
                    "items": {
                      "type": "string"
                    },
                    "description": "HTTPS URLs the copy references; each is verified alive via HEAD (fallback GET), 8s timeout, redirects never followed (max 20)"
                  },
                  "quote_id": {
                    "type": "string",
                    "description": "Optional. The quote_id from this route's 402 response, if you want the call pinned to that exact quoted price. Omit it and the verified payment itself binds the call at the route's current price."
                  },
                  "register": {
                    "type": "string",
                    "description": "Voice register: founder-notes, elite, force, or bright-soft-junior"
                  },
                  "required_terms": {
                    "type": "array",
                    "items": {
                      "type": "string"
                    },
                    "description": "Terms that must appear in the final copy (max 20; each term max 100 chars; counted case-insensitively)"
                  },
                  "idempotency_key": {
                    "type": "string",
                    "description": "Idempotency key: 8-128 printable ASCII characters (no spaces), client-generated, one per logical request — a UUID v4 is recommended. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      },
      "manifestUrl": "https://aemb.pro/.well-known/x402.json"
    },
    "builder-code": {
      "info": {
        "a": "bc_b8fwf0kk"
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "a": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "App builder code"
          },
          "s": {
            "type": "array",
            "items": {
              "type": "string",
              "pattern": "^[a-z0-9_]{1,32}$"
            },
            "maxItems": 11,
            "description": "Service builder codes"
          },
          "w": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "Wallet builder code"
          }
        },
        "additionalProperties": false
      }
    }
  },
  "x402Version": 2
}

Captured payload 3 of 17

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://aemb.pro/v1/agent-id/issue",
    "mimeType": "application/json",
    "description": "Issue an Agent ID: attestation binding a pubkey to a verified principal — unverifiable are refused. validity_days defaults to standard. Verify: agentid_verify. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402",
    "serviceName": "Agent Embassy"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "agent_pubkey": "0x9d8a7b6c5d4e3f2a1b0c9d8e7f6a5b4c3d2e1f0a",
            "principal_id": "principal-example-001",
            "operator_name": "Example Operator",
            "validity_days": 365,
            "principal_kind": "legal_entity",
            "idempotency_key": "b9afd8d9-1d9c-4377-a10f-cafda9109b03",
            "principal_label": "Example Org",
            "agent_key_scheme": "eip191",
            "operator_contact": "[email protected]",
            "principal_attestation_method": "document-check"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "tool": "agentid_issue",
            "chain": [
              "request",
              "authorization",
              "action",
              "proof",
              "liability_boundary"
            ],
            "status": "complete",
            "account": "0x1111111111111111111111111111111111111111",
            "agent_id": "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef",
            "receipt_id": "emb_9f8e7d6c5b4a3210fedcba98",
            "receipt_version": "embassy-receipt/2"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "agent_pubkey",
                  "operator_name",
                  "operator_contact",
                  "principal_id",
                  "principal_kind",
                  "principal_label",
                  "principal_attestation_method",
                  "idempotency_key"
                ],
                "properties": {
                  "quote_id": {
                    "type": "string",
                    "description": "Optional. The quote_id from this route's 402 response, if you want the call pinned to that exact quoted price. Omit it and the verified payment itself binds the call at the route's current price."
                  },
                  "agent_pubkey": {
                    "type": "string",
                    "description": "The agent's public key (hex), the root of the Agent ID"
                  },
                  "principal_id": {
                    "type": "string",
                    "description": "ID of the accountable principal on file with the Embassy"
                  },
                  "operator_name": {
                    "type": "string",
                    "description": "Public name of the operator running the agent"
                  },
                  "validity_days": {
                    "type": "number",
                    "description": "Days until the Agent ID expires; integer 1-730. Defaults to the Embassy standard when omitted"
                  },
                  "principal_kind": {
                    "type": "string",
                    "description": "Kind of principal: human or legal_entity"
                  },
                  "idempotency_key": {
                    "type": "string",
                    "description": "Idempotency key: 8-128 printable ASCII characters (no spaces), client-generated, one per logical request — a UUID v4 is recommended. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
                  },
                  "principal_label": {
                    "type": "string",
                    "description": "Public label for the principal"
                  },
                  "agent_key_scheme": {
                    "type": "string",
                    "description": "Key scheme for agent_pubkey: eip191 or ed25519 (default eip191)"
                  },
                  "operator_contact": {
                    "type": "string",
                    "description": "Public contact for the operator"
                  },
                  "principal_attestation_method": {
                    "type": "string",
                    "description": "How the Embassy verified the principal"
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      },
      "manifestUrl": "https://aemb.pro/.well-known/x402.json"
    },
    "builder-code": {
      "info": {
        "a": "bc_b8fwf0kk"
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "a": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "App builder code"
          },
          "s": {
            "type": "array",
            "items": {
              "type": "string",
              "pattern": "^[a-z0-9_]{1,32}$"
            },
            "maxItems": 11,
            "description": "Service builder codes"
          },
          "w": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "Wallet builder code"
          }
        },
        "additionalProperties": false
      }
    }
  },
  "x402Version": 2
}

Captured payload 4 of 17

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "1000000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "1000000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://aemb.pro/v1/recovery/register",
    "mimeType": "application/json",
    "description": "Escrow an encrypted recovery blob: stored opaquely — we cannot decrypt it — for operator review, signed receipt proving its hash; quorum_rules govern release. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402",
    "serviceName": "Agent Embassy"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "contact_name": "A. Operator",
            "quorum_rules": "2-of-3 named trustees must approve release",
            "recovery_blob": "ENC:v1:base64-of-client-encrypted-key-shares...",
            "contact_handle": "[email protected]",
            "idempotency_key": "183b74c7-79e7-4f68-9562-0767387af4b1"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "tool": "register_recovery",
            "chain": [
              "request",
              "authorization",
              "action",
              "proof",
              "liability_boundary"
            ],
            "status": "received",
            "account": "0x1111111111111111111111111111111111111111",
            "receipt_id": "emb_abc123",
            "receipt_version": "embassy-receipt/2"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "contact_name",
                  "quorum_rules",
                  "recovery_blob",
                  "idempotency_key"
                ],
                "properties": {
                  "quote_id": {
                    "type": "string",
                    "description": "Optional. The quote_id from this route's 402 response, if you want the call pinned to that exact quoted price. Omit it and the verified payment itself binds the call at the route's current price."
                  },
                  "contact_name": {
                    "type": "string",
                    "description": "Your name or operator handle, recorded with the escrow"
                  },
                  "quorum_rules": {
                    "type": "string",
                    "description": "The release rules for this blob, e.g. '2-of-3 named trustees must approve release'"
                  },
                  "recovery_blob": {
                    "type": "string",
                    "description": "Client-encrypted blob (ENC:v1:base64...). Stored opaquely; only its SHA-256 and byte count enter the signed receipt"
                  },
                  "contact_handle": {
                    "type": "string",
                    "description": "Optional contact (email or handle) for the operator review"
                  },
                  "idempotency_key": {
                    "type": "string",
                    "description": "Idempotency key: 8-128 printable ASCII characters (no spaces), client-generated, one per logical request — a UUID v4 is recommended. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      },
      "manifestUrl": "https://aemb.pro/.well-known/x402.json"
    },
    "builder-code": {
      "info": {
        "a": "bc_b8fwf0kk"
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "a": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "App builder code"
          },
          "s": {
            "type": "array",
            "items": {
              "type": "string",
              "pattern": "^[a-z0-9_]{1,32}$"
            },
            "maxItems": 11,
            "description": "Service builder codes"
          },
          "w": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "Wallet builder code"
          }
        },
        "additionalProperties": false
      }
    }
  },
  "x402Version": 2
}

Captured payload 5 of 17

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://aemb.pro/v1/agent-id/verify",
    "mimeType": "application/json",
    "description": "Agent ID state — valid, revoked, expired, or unknown — chain + envelope included. Unknown IDs: unknown, never error. Issue: agentid_issue; extend: agentid_renew. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402",
    "serviceName": "Agent Embassy"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "agent_id": "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef",
            "idempotency_key": "5cbbeed3-c687-4c9d-b915-91d5563c8758"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "tool": "agentid_verify",
            "chain": [
              "request",
              "authorization",
              "action",
              "proof",
              "liability_boundary"
            ],
            "status": "valid",
            "account": "0x1111111111111111111111111111111111111111",
            "agent_id": "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef",
            "receipt_id": "emb_1a2b3c4d5e6f7890abcdef12",
            "receipt_version": "embassy-receipt/2"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "agent_id",
                  "idempotency_key"
                ],
                "properties": {
                  "agent_id": {
                    "type": "string",
                    "description": "The Agent ID string returned at issuance (64 hex characters; case-insensitive). Rate-limited: 30 checks/min per client IP, 429 on exhaustion"
                  },
                  "quote_id": {
                    "type": "string",
                    "description": "Optional. The quote_id from this route's 402 response, if you want the call pinned to that exact quoted price. Omit it and the verified payment itself binds the call at the route's current price."
                  },
                  "idempotency_key": {
                    "type": "string",
                    "description": "Idempotency key: 8-128 printable ASCII characters (no spaces), client-generated, one per logical request — a UUID v4 is recommended. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      },
      "manifestUrl": "https://aemb.pro/.well-known/x402.json"
    },
    "builder-code": {
      "info": {
        "a": "bc_b8fwf0kk"
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "a": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "App builder code"
          },
          "s": {
            "type": "array",
            "items": {
              "type": "string",
              "pattern": "^[a-z0-9_]{1,32}$"
            },
            "maxItems": 11,
            "description": "Service builder codes"
          },
          "w": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "Wallet builder code"
          }
        },
        "additionalProperties": false
      }
    }
  },
  "x402Version": 2
}

Captured payload 6 of 17

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://aemb.pro/v1/check/prove",
    "mimeType": "application/json",
    "description": "Proof anyone can verify: one fetch, transcript sealed in a signed receipt — HTTP 200 at that moment, fixed at 200. Your own conditions instead: check_url_custom. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402",
    "serviceName": "Agent Embassy"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "url": "https://example.com",
            "idempotency_key": "27b4b8d9-c9be-4ed1-87a3-8643525078f6"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "tool": "check_url_sealed",
            "chain": [
              "request",
              "authorization",
              "action",
              "proof",
              "liability_boundary"
            ],
            "status": "complete",
            "account": "0x1111111111111111111111111111111111111111",
            "verdict": "pass",
            "receipt_id": "emb_stu901",
            "receipt_version": "embassy-receipt/2"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "url",
                  "idempotency_key"
                ],
                "properties": {
                  "url": {
                    "type": "string",
                    "description": "HTTPS URL to prove live (max 2000 chars; no credentials in URL). Fetched once; up to 3 redirects followed, 10s timeout, 1MB body cap. Default expectation: HTTP 200"
                  },
                  "quote_id": {
                    "type": "string",
                    "description": "Optional. The quote_id from this route's 402 response, if you want the call pinned to that exact quoted price. Omit it and the verified payment itself binds the call at the route's current price."
                  },
                  "idempotency_key": {
                    "type": "string",
                    "description": "Idempotency key: 8-128 printable ASCII characters (no spaces), client-generated, one per logical request — a UUID v4 is recommended. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      },
      "manifestUrl": "https://aemb.pro/.well-known/x402.json"
    },
    "builder-code": {
      "info": {
        "a": "bc_b8fwf0kk"
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "a": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "App builder code"
          },
          "s": {
            "type": "array",
            "items": {
              "type": "string",
              "pattern": "^[a-z0-9_]{1,32}$"
            },
            "maxItems": 11,
            "description": "Service builder codes"
          },
          "w": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "Wallet builder code"
          }
        },
        "additionalProperties": false
      }
    }
  },
  "x402Version": 2
}

Captured payload 7 of 17

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "1000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "1000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://aemb.pro/v1/check/verify",
    "mimeType": "application/json",
    "description": "Your conditions, one fetch: status, substring, JSON value — signed pass/fail receipt. Default status 200. Public proof: check_url_sealed. Watch: check_url_changes. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402",
    "serviceName": "Agent Embassy"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "url": "https://example.com",
            "expect_status": 200,
            "idempotency_key": "cca9cebe-ca2b-4f4f-b70e-3bfe0dccc388",
            "expect_body_contains": "Example Domain"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "tool": "check_url_custom",
            "chain": [
              "request",
              "authorization",
              "action",
              "proof",
              "liability_boundary"
            ],
            "status": "complete",
            "account": "0x1111111111111111111111111111111111111111",
            "verdict": "pass",
            "receipt_id": "emb_jkl012",
            "receipt_version": "embassy-receipt/2"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "url",
                  "idempotency_key"
                ],
                "properties": {
                  "url": {
                    "type": "string",
                    "description": "HTTPS URL to check (max 2000 chars; no credentials in URL). Fetched once; up to 3 redirects followed, 10s timeout, 1MB body cap"
                  },
                  "quote_id": {
                    "type": "string",
                    "description": "Optional. The quote_id from this route's 402 response, if you want the call pinned to that exact quoted price. Omit it and the verified payment itself binds the call at the route's current price."
                  },
                  "expect_status": {
                    "type": "number",
                    "description": "Expected HTTP status code; truncated to an integer. Defaults to 200 when omitted"
                  },
                  "idempotency_key": {
                    "type": "string",
                    "description": "Idempotency key: 8-128 printable ASCII characters (no spaces), client-generated, one per logical request — a UUID v4 is recommended. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
                  },
                  "expect_json_path": {
                    "type": "string",
                    "description": "Dot-separated path into the JSON body, e.g. 'data.price' (max 500 chars). Only evaluated when set"
                  },
                  "expect_json_equals": {
                    "description": "Expected value at expect_json_path; compared by canonical JSON equality. Defaults to null when omitted"
                  },
                  "expect_body_contains": {
                    "type": "string",
                    "description": "Substring that must appear in the response body (max 5000 chars). Skipped when empty or omitted"
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      },
      "manifestUrl": "https://aemb.pro/.well-known/x402.json"
    },
    "builder-code": {
      "info": {
        "a": "bc_b8fwf0kk"
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "a": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "App builder code"
          },
          "s": {
            "type": "array",
            "items": {
              "type": "string",
              "pattern": "^[a-z0-9_]{1,32}$"
            },
            "maxItems": 11,
            "description": "Service builder codes"
          },
          "w": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "Wallet builder code"
          }
        },
        "additionalProperties": false
      }
    }
  },
  "x402Version": 2
}

Captured payload 8 of 17

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://aemb.pro/v1/preflight/check",
    "mimeType": "application/json",
    "description": "Before paying: who is paid, what's delivered, what changed — signed verdict against your policies. Free quote: dry_run=true. Endpoint verdict: trust_report. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402",
    "serviceName": "Agent Embassy"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "intent": {
              "operation": "tool_name",
              "params_summary": "sha256:…",
              "advertised_cost_usdc": "0.10"
            },
            "policy": [
              "require namespace proof",
              "no undisclosed intermediary fee"
            ],
            "subject": {
              "artifact": "mcpb://example/tool",
              "server_id": "io.github.example/mcp-server",
              "claimed_version": "1.4.2"
            },
            "idempotency_key": "dddf70a8-c4b1-4015-840a-66cbb0987e0a"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "tool": "trust_preflight",
            "chain": [
              "request",
              "authorization",
              "action",
              "proof",
              "liability_boundary"
            ],
            "status": "complete",
            "account": "0x1111111111111111111111111111111111111111",
            "verdict": "PROCEED_WITH_CAUTION",
            "receipt_id": "emb_xyz789",
            "receipt_version": "embassy-receipt/2"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "subject",
                  "intent"
                ],
                "properties": {
                  "intent": {
                    "type": "object",
                    "description": "The intended invocation: operation (required), params_summary (sha256 of canonical params — params never travel), advertised_cost_usdc"
                  },
                  "policy": {
                    "type": "array",
                    "items": {
                      "type": "string"
                    },
                    "description": "Your policy strings, e.g. [\"require namespace proof\", \"no unverified network egress\", \"fresh observation <24h\", \"no undisclosed intermediary fee\"] (max 20)"
                  },
                  "context": {
                    "type": "object",
                    "description": "principal_wallet + chain (eip155:8453). Optional."
                  },
                  "dry_run": {
                    "type": "boolean",
                    "description": "true = free dry-run: field-coverage map + exact price quote only. Intercepted before the payment gate; no proof bytes, no verdict, no signature."
                  },
                  "subject": {
                    "type": "object",
                    "description": "The spend target: server_id (required), artifact (mcpb:// | oci:// | https://), claimed_version"
                  },
                  "quote_id": {
                    "type": "string",
                    "description": "Optional. The quote_id from this route's 402 response, if you want the call pinned to that exact quoted price. Omit it and the verified payment itself binds the call at the route's current price."
                  },
                  "idempotency_key": {
                    "type": "string",
                    "description": "Idempotency key: 8-128 printable ASCII characters (no spaces), client-generated, one per logical request — a UUID v4 is recommended. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      },
      "manifestUrl": "https://aemb.pro/.well-known/x402.json"
    },
    "builder-code": {
      "info": {
        "a": "bc_b8fwf0kk"
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "a": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "App builder code"
          },
          "s": {
            "type": "array",
            "items": {
              "type": "string",
              "pattern": "^[a-z0-9_]{1,32}$"
            },
            "maxItems": 11,
            "description": "Service builder codes"
          },
          "w": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "Wallet builder code"
          }
        },
        "additionalProperties": false
      }
    }
  },
  "x402Version": 2
}

Captured payload 9 of 17

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://aemb.pro/v1/markets/compute/alerts",
    "mimeType": "application/json",
    "description": "GPU price moves that matter: significant spot moves, in a signed receipt. limit defaults to 25. Live snapshot: compute_spot_prices. Past: compute_history. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402",
    "serviceName": "Agent Embassy"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "gpu": "H100 SXM",
            "limit": 25,
            "idempotency_key": "e6a9a423-ecd0-4f24-81ac-7a80804ac143"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "tool": "compute_alerts",
            "chain": [
              "request",
              "authorization",
              "action",
              "proof",
              "liability_boundary"
            ],
            "status": "complete",
            "account": "0x1111111111111111111111111111111111111111",
            "receipt_id": "emb_pqr678",
            "receipt_version": "embassy-receipt/2"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "idempotency_key"
                ],
                "properties": {
                  "gpu": {
                    "type": "string",
                    "description": "Optional GPU filter, e.g. 'H100 SXM' (max 64 chars). Omit for all GPUs"
                  },
                  "limit": {
                    "type": "number",
                    "description": "Max alerts to return; integer 1-50. Defaults to 25"
                  },
                  "quote_id": {
                    "type": "string",
                    "description": "Optional. The quote_id from this route's 402 response, if you want the call pinned to that exact quoted price. Omit it and the verified payment itself binds the call at the route's current price."
                  },
                  "idempotency_key": {
                    "type": "string",
                    "description": "Idempotency key: 8-128 printable ASCII characters (no spaces), client-generated, one per logical request — a UUID v4 is recommended. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      },
      "manifestUrl": "https://aemb.pro/.well-known/x402.json"
    },
    "builder-code": {
      "info": {
        "a": "bc_b8fwf0kk"
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "a": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "App builder code"
          },
          "s": {
            "type": "array",
            "items": {
              "type": "string",
              "pattern": "^[a-z0-9_]{1,32}$"
            },
            "maxItems": 11,
            "description": "Service builder codes"
          },
          "w": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "Wallet builder code"
          }
        },
        "additionalProperties": false
      }
    }
  },
  "x402Version": 2
}

Captured payload 10 of 17

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://aemb.pro/v1/cert",
    "mimeType": "application/json",
    "description": "Prove a document existed: send its SHA256 hash — we never see it — for a signed, hash-chained attestation. document_name is an optional label. Live URLs: check_url_custom. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402",
    "serviceName": "Agent Embassy"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "document_hash": "2a643300cf8bb1fb12193c29ee949db7e9f811d8b99733382c0f7ca15322de8e",
            "document_name": "contract.txt",
            "idempotency_key": "13f71496-233f-4a10-9681-4db25891cb32"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "tool": "attest_document",
            "chain": [
              "request",
              "authorization",
              "action",
              "proof",
              "liability_boundary"
            ],
            "status": "certified",
            "account": "0x1111111111111111111111111111111111111111",
            "receipt_id": "emb_9f8e7d6c5b4a",
            "receipt_version": "embassy-receipt/2"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "document_hash",
                  "idempotency_key"
                ],
                "properties": {
                  "quote_id": {
                    "type": "string",
                    "description": "Optional. The quote_id from this route's 402 response, if you want the call pinned to that exact quoted price. Omit it and the verified payment itself binds the call at the route's current price."
                  },
                  "document_hash": {
                    "type": "string",
                    "description": "SHA256 hash of your document as 64 lowercase hex characters. We never see the document itself."
                  },
                  "document_name": {
                    "type": "string",
                    "description": "Optional label for your document (max 200 chars), recorded on the receipt"
                  },
                  "idempotency_key": {
                    "type": "string",
                    "description": "Idempotency key: 8-128 printable ASCII characters (no spaces), client-generated, one per logical request — a UUID v4 is recommended. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      },
      "manifestUrl": "https://aemb.pro/.well-known/x402.json"
    },
    "builder-code": {
      "info": {
        "a": "bc_b8fwf0kk"
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "a": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "App builder code"
          },
          "s": {
            "type": "array",
            "items": {
              "type": "string",
              "pattern": "^[a-z0-9_]{1,32}$"
            },
            "maxItems": 11,
            "description": "Service builder codes"
          },
          "w": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "Wallet builder code"
          }
        },
        "additionalProperties": false
      }
    }
  },
  "x402Version": 2
}

Captured payload 11 of 17

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://aemb.pro/v1/trust/report",
    "mimeType": "application/json",
    "description": "Buy/don't-buy verdict on an x402 endpoint: probed unpaid, signed PROCEED, VERIFY_FIRST, or DO_NOT_PAY. Terms: trust_preflight. Action gate: trust_assurance. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402",
    "serviceName": "Agent Embassy"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "url": "https://example.com/v1/paid/thing",
            "idempotency_key": "e997ddae-7bff-4df6-b9a2-ad2df2836318"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "tool": "trust_report",
            "chain": [
              "request",
              "authorization",
              "action",
              "proof",
              "liability_boundary"
            ],
            "status": "complete",
            "account": "0x1111111111111111111111111111111111111111",
            "verdict": "pass",
            "receipt_id": "emb_mno345",
            "receipt_version": "embassy-receipt/2"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "url",
                  "idempotency_key"
                ],
                "properties": {
                  "url": {
                    "type": "string",
                    "description": "HTTPS URL of the candidate x402 endpoint to probe (max 2000 chars; no credentials in URL). Probed unpaid via GET, falling back to an empty-body POST when GET returns 404/405"
                  },
                  "quote_id": {
                    "type": "string",
                    "description": "Optional. The quote_id from this route's 402 response, if you want the call pinned to that exact quoted price. Omit it and the verified payment itself binds the call at the route's current price."
                  },
                  "idempotency_key": {
                    "type": "string",
                    "description": "Idempotency key: 8-128 printable ASCII characters (no spaces), client-generated, one per logical request — a UUID v4 is recommended. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      },
      "manifestUrl": "https://aemb.pro/.well-known/x402.json"
    },
    "builder-code": {
      "info": {
        "a": "bc_b8fwf0kk"
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "a": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "App builder code"
          },
          "s": {
            "type": "array",
            "items": {
              "type": "string",
              "pattern": "^[a-z0-9_]{1,32}$"
            },
            "maxItems": 11,
            "description": "Service builder codes"
          },
          "w": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "Wallet builder code"
          }
        },
        "additionalProperties": false
      }
    }
  },
  "x402Version": 2
}

Captured payload 12 of 17

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://aemb.pro/v1/assurance/check",
    "mimeType": "application/json",
    "description": "Action gate: endpoint, action, amount, permissions probed unpaid — ALLOW, RESTRICT, ASK_HUMAN, or QUARANTINE. Verdict: trust_report. Terms: trust_preflight. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402",
    "serviceName": "Agent Embassy"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "action": "transfer",
            "amount_usdc": "0.25",
            "idempotency_key": "f0dcf0c2-9c5c-4ee7-b7dc-611b901209b8",
            "provider_endpoint": "https://example.com/v1/paid/thing",
            "permissions_requested": [
              "spend"
            ]
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "tool": "trust_assurance",
            "chain": [
              "request",
              "authorization",
              "action",
              "proof",
              "liability_boundary"
            ],
            "status": "complete",
            "account": "0x1111111111111111111111111111111111111111",
            "verdict": "pass",
            "decision": "ALLOW_WITH_RESTRICTIONS",
            "receipt_id": "emb_pqr678",
            "receipt_version": "embassy-receipt/2"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "provider_endpoint",
                  "action",
                  "amount_usdc",
                  "permissions_requested",
                  "idempotency_key"
                ],
                "properties": {
                  "action": {
                    "type": "string",
                    "description": "The action the agent intends to take, e.g. 'transfer' (required, max 200 chars)"
                  },
                  "context": {
                    "type": "string",
                    "description": "Optional free-text context for the assessment (truncated to 2000 chars)"
                  },
                  "quote_id": {
                    "type": "string",
                    "description": "Optional. The quote_id from this route's 402 response, if you want the call pinned to that exact quoted price. Omit it and the verified payment itself binds the call at the route's current price."
                  },
                  "amount_usdc": {
                    "type": "string",
                    "description": "Amount at stake, as a positive decimal string, e.g. '0.25'"
                  },
                  "idempotency_key": {
                    "type": "string",
                    "description": "Idempotency key: 8-128 printable ASCII characters (no spaces), client-generated, one per logical request — a UUID v4 is recommended. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
                  },
                  "provider_endpoint": {
                    "type": "string",
                    "description": "HTTPS URL of the provider to assess (max 2000 chars; no credentials in URL)"
                  },
                  "permissions_requested": {
                    "type": "array",
                    "items": {
                      "type": "string"
                    },
                    "description": "Permissions the action needs, e.g. ['spend']. Non-empty array, max 50 entries; each entry truncated to 200 chars"
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      },
      "manifestUrl": "https://aemb.pro/.well-known/x402.json"
    },
    "builder-code": {
      "info": {
        "a": "bc_b8fwf0kk"
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "a": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "App builder code"
          },
          "s": {
            "type": "array",
            "items": {
              "type": "string",
              "pattern": "^[a-z0-9_]{1,32}$"
            },
            "maxItems": 11,
            "description": "Service builder codes"
          },
          "w": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "Wallet builder code"
          }
        },
        "additionalProperties": false
      }
    }
  },
  "x402Version": 2
}

Captured payload 13 of 17

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://aemb.pro/v1/markets/compute/history",
    "mimeType": "application/json",
    "description": "GPU market memory: cheapest and median asks per class, in a signed receipt. limit defaults to 50. Live: compute_spot_prices. Moves: compute_alerts. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402",
    "serviceName": "Agent Embassy"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "gpu": "H100 SXM",
            "limit": 50,
            "idempotency_key": "48f1d7c5-f009-40f5-a9b1-3df668cbe656"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "tool": "compute_history",
            "chain": [
              "request",
              "authorization",
              "action",
              "proof",
              "liability_boundary"
            ],
            "status": "complete",
            "account": "0x1111111111111111111111111111111111111111",
            "receipt_id": "emb_mno345",
            "receipt_version": "embassy-receipt/2"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "idempotency_key"
                ],
                "properties": {
                  "gpu": {
                    "type": "string",
                    "description": "Optional GPU filter, e.g. 'H100 SXM' (max 64 chars). Omit for whole-market history"
                  },
                  "limit": {
                    "type": "number",
                    "description": "Max history points to return; integer 1-200. Defaults to 50"
                  },
                  "quote_id": {
                    "type": "string",
                    "description": "Optional. The quote_id from this route's 402 response, if you want the call pinned to that exact quoted price. Omit it and the verified payment itself binds the call at the route's current price."
                  },
                  "idempotency_key": {
                    "type": "string",
                    "description": "Idempotency key: 8-128 printable ASCII characters (no spaces), client-generated, one per logical request — a UUID v4 is recommended. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      },
      "manifestUrl": "https://aemb.pro/.well-known/x402.json"
    },
    "builder-code": {
      "info": {
        "a": "bc_b8fwf0kk"
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "a": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "App builder code"
          },
          "s": {
            "type": "array",
            "items": {
              "type": "string",
              "pattern": "^[a-z0-9_]{1,32}$"
            },
            "maxItems": 11,
            "description": "Service builder codes"
          },
          "w": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "Wallet builder code"
          }
        },
        "additionalProperties": false
      }
    }
  },
  "x402Version": 2
}

Captured payload 14 of 17

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://aemb.pro/v1/agent-id/revoke",
    "mimeType": "application/json",
    "description": "Retire an Agent ID instantly, with no successor: sign as the revocation_signature field specifies — who signs, and how. Fresh ID, same chain: agentid_renew. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402",
    "serviceName": "Agent Embassy"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "reason": "Operator requested retirement of this Agent ID.",
            "agent_id": "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef",
            "idempotency_key": "e6d11bbc-fc7f-426b-a08c-f5504391bf44",
            "revocation_signature": "0xababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababab"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "tool": "agentid_revoke",
            "chain": [
              "request",
              "authorization",
              "action",
              "proof",
              "liability_boundary"
            ],
            "status": "complete",
            "account": "0x1111111111111111111111111111111111111111",
            "agent_id": "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef",
            "receipt_id": "emb_2b3c4d5e6f7890abcdef1234",
            "receipt_version": "embassy-receipt/2"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "agent_id",
                  "reason",
                  "revocation_signature"
                ],
                "properties": {
                  "reason": {
                    "type": "string",
                    "description": "Why the Agent ID is being retired (required, max 500 characters)"
                  },
                  "agent_id": {
                    "type": "string",
                    "description": "The Agent ID string returned at issuance (64 hex characters; case-insensitive). Unknown IDs are rejected"
                  },
                  "quote_id": {
                    "type": "string",
                    "description": "Optional. The quote_id from this route's 402 response, if you want the call pinned to that exact quoted price. Omit it and the verified payment itself binds the call at the route's current price."
                  },
                  "idempotency_key": {
                    "type": "string",
                    "description": "Optional idempotency key: 8-128 printable ASCII characters (no spaces), client-generated, one per logical request — a UUID v4 is recommended; published example keys are rejected. When provided, replaying the same key returns the original receipt instead of re-running the action; when omitted, no dedupe occurs. Keys are scoped per tool and per payer account: the same key on another tool — or from another wallet — is unrelated."
                  },
                  "revocation_signature": {
                    "type": "string",
                    "description": "Hex signature over the exact UTF-8 message agent-id-revoke:<agent_id> (64-char lowercase ID, no trailing newline). EIP-191: personal_sign the message STRING (personal_sign envelope REQUIRED — raw ECDSA will not verify), 0x 65-byte hex r||s||v (v=27/28). ed25519: nacl.sign.detached over the message bytes, 64-byte hex. Signer: the principal's on-file revocation key, or the Embassy signer for cause"
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      },
      "manifestUrl": "https://aemb.pro/.well-known/x402.json"
    },
    "builder-code": {
      "info": {
        "a": "bc_b8fwf0kk"
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "a": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "App builder code"
          },
          "s": {
            "type": "array",
            "items": {
              "type": "string",
              "pattern": "^[a-z0-9_]{1,32}$"
            },
            "maxItems": 11,
            "description": "Service builder codes"
          },
          "w": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "Wallet builder code"
          }
        },
        "additionalProperties": false
      }
    }
  },
  "x402Version": 2
}

Captured payload 15 of 17

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://aemb.pro/v1/check/proveit-verified",
    "mimeType": "application/json",
    "description": "GPU price, sealed proof: snapshot, cheapest ask/class, signed receipt. type defaults ondemand; omit gpu = all classes. Raw: compute_spot_prices. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402",
    "serviceName": "Agent Embassy"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "gpu": "H100 SXM",
            "type": "ondemand",
            "idempotency_key": "f87ed750-cfb7-4606-817a-d9c2abd2e6b6"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "tool": "compute_spot_sealed",
            "chain": [
              "request",
              "authorization",
              "action",
              "proof",
              "liability_boundary"
            ],
            "status": "complete",
            "account": "0x1111111111111111111111111111111111111111",
            "verdict": "pass",
            "receipt_id": "emb_tuv234",
            "receipt_version": "embassy-receipt/2"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "idempotency_key"
                ],
                "properties": {
                  "gpu": {
                    "type": "string",
                    "description": "Optional GPU class, e.g. 'H100 SXM' (max 64 chars). Omit for the per-class snapshot"
                  },
                  "type": {
                    "type": "string",
                    "description": "Offer type: ondemand, bid, or reserved. Defaults to ondemand"
                  },
                  "quote_id": {
                    "type": "string",
                    "description": "Optional. The quote_id from this route's 402 response, if you want the call pinned to that exact quoted price. Omit it and the verified payment itself binds the call at the route's current price."
                  },
                  "idempotency_key": {
                    "type": "string",
                    "description": "Idempotency key: 8-128 printable ASCII characters (no spaces), client-generated, one per logical request — a UUID v4 is recommended. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      },
      "manifestUrl": "https://aemb.pro/.well-known/x402.json"
    },
    "builder-code": {
      "info": {
        "a": "bc_b8fwf0kk"
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "a": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "App builder code"
          },
          "s": {
            "type": "array",
            "items": {
              "type": "string",
              "pattern": "^[a-z0-9_]{1,32}$"
            },
            "maxItems": 11,
            "description": "Service builder codes"
          },
          "w": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "Wallet builder code"
          }
        },
        "additionalProperties": false
      }
    }
  },
  "x402Version": 2
}

Captured payload 16 of 17

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://aemb.pro/v1/agent-id/renew",
    "mimeType": "application/json",
    "description": "Renew an Agent ID: fresh ID, same chain; the old retires. Sign like a revocation. validity_days defaults to standard. Retire outright: agentid_revoke. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402",
    "serviceName": "Agent Embassy"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "agent_id": "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef",
            "validity_days": 365,
            "idempotency_key": "6acf1299-b3b9-4390-a8c7-552d3f251dfd",
            "revocation_signature": "0xababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababab"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "tool": "agentid_renew",
            "chain": [
              "request",
              "authorization",
              "action",
              "proof",
              "liability_boundary"
            ],
            "status": "complete",
            "account": "0x1111111111111111111111111111111111111111",
            "agent_id": "fedcba9876543210fedcba9876543210fedcba9876543210fedcba9876543210",
            "receipt_id": "emb_3c4d5e6f7890abcdef123456",
            "receipt_version": "embassy-receipt/2"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "agent_id",
                  "revocation_signature"
                ],
                "properties": {
                  "agent_id": {
                    "type": "string",
                    "description": "The Agent ID string returned at issuance (64 hex characters; case-insensitive). Unknown IDs are rejected"
                  },
                  "quote_id": {
                    "type": "string",
                    "description": "Optional. The quote_id from this route's 402 response, if you want the call pinned to that exact quoted price. Omit it and the verified payment itself binds the call at the route's current price."
                  },
                  "validity_days": {
                    "type": "number",
                    "description": "Days until the renewed Agent ID expires; integer 1-730. Defaults to the Embassy standard when omitted"
                  },
                  "idempotency_key": {
                    "type": "string",
                    "description": "Optional idempotency key: 8-128 printable ASCII characters (no spaces), client-generated, one per logical request — a UUID v4 is recommended; published example keys are rejected. When provided, replaying the same key returns the original receipt instead of re-running the action; when omitted, no dedupe occurs. Keys are scoped per tool and per payer account: the same key on another tool — or from another wallet — is unrelated."
                  },
                  "revocation_signature": {
                    "type": "string",
                    "description": "Hex signature over the exact UTF-8 message agent-id-revoke:<OLD_agent_id> (64-char lowercase ID, no trailing newline) — the signature covers the OLD Agent ID being retired. EIP-191: personal_sign the message STRING (personal_sign envelope REQUIRED — raw ECDSA will not verify), 0x 65-byte hex r||s||v (v=27/28). ed25519: nacl.sign.detached over the message bytes, 64-byte hex. Signer: the principal's on-file revocation key, or the Embassy signer for cause"
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      },
      "manifestUrl": "https://aemb.pro/.well-known/x402.json"
    },
    "builder-code": {
      "info": {
        "a": "bc_b8fwf0kk"
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "a": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "App builder code"
          },
          "s": {
            "type": "array",
            "items": {
              "type": "string",
              "pattern": "^[a-z0-9_]{1,32}$"
            },
            "maxItems": 11,
            "description": "Service builder codes"
          },
          "w": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "Wallet builder code"
          }
        },
        "additionalProperties": false
      }
    }
  },
  "x402Version": 2
}

Captured payload 17 of 17

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "222000000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
      "amount": "222000000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://aemb.pro/v1/research/paper",
    "mimeType": "application/json",
    "description": "The research paper: $222.00; $444.00 with the provenance pack — paper plus its proof. bundle defaults to paper; prior receipt: $222.00 upgrade. Licensed to your wallet. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402",
    "serviceName": "Agent Embassy"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "bundle": "paper+provenance",
            "paper_id": "the-discontinuity-20260922",
            "idempotency_key": "5e857daf-fbc8-42b2-aa48-ed3e7d6ab5cc"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "tool": "research_paper",
            "bytes": 24013,
            "chain": [
              "request",
              "authorization",
              "action",
              "proof",
              "liability_boundary"
            ],
            "bundle": "paper+provenance",
            "status": "complete",
            "account": "0x1111111111111111111111111111111111111111",
            "paper_id": "the-discontinuity-20260922",
            "receipt_id": "emb_pqr678",
            "receipt_version": "embassy-receipt/2"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "paper_id",
                  "idempotency_key"
                ],
                "properties": {
                  "bundle": {
                    "type": "string",
                    "description": "Delivery tier: 'paper' ($222.00) or 'paper+provenance' ($444.00, paper plus the corpus proof pack). Defaults to 'paper'."
                  },
                  "paper_id": {
                    "type": "string",
                    "description": "Catalog ID of the paper, e.g. 'the-discontinuity-20260922'. Unknown IDs are rejected"
                  },
                  "quote_id": {
                    "type": "string",
                    "description": "Optional. The quote_id from this route's 402 response, if you want the call pinned to that exact quoted price. Omit it and the verified payment itself binds the call at the route's current price."
                  },
                  "buyer_alias": {
                    "type": "string",
                    "description": "Optional license display name (3-32 chars: letters, digits, . _ -). Defaults to the first 8 hex chars of the buyer wallet."
                  },
                  "idempotency_key": {
                    "type": "string",
                    "description": "Idempotency key: 8-128 printable ASCII characters (no spaces), client-generated, one per logical request — a UUID v4 is recommended. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
                  },
                  "prior_receipt_id": {
                    "type": "string",
                    "description": "Optional receipt-carried tier: a prior research_paper receipt id (emb_...) for the $222.00 paper tier, owned by the paying wallet. When valid, buying paper+provenance costs the $222.00 upgrade delta instead of $444.00. The prior receipt's signature is verified and must belong to the payer; invalid ids are rejected with 400 before settlement. Quoted provisionally at 402 time; ownership proven at run time."
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      },
      "manifestUrl": "https://aemb.pro/.well-known/x402.json"
    },
    "builder-code": {
      "info": {
        "a": "bc_b8fwf0kk"
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "a": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "App builder code"
          },
          "s": {
            "type": "array",
            "items": {
              "type": "string",
              "pattern": "^[a-z0-9_]{1,32}$"
            },
            "maxItems": 11,
            "description": "Service builder codes"
          },
          "w": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$",
            "description": "Wallet builder code"
          }
        },
        "additionalProperties": false
      }
    }
  },
  "x402Version": 2
}

Can I trust it score from our own monitoring

score from our own monitoring

91/100 Solid

#15 of 186 in Verification. Bands: strong 93+, solid 75+, mixed 55+, weak below 55.

Reliability
99.7% uptime 30d
Compliance
A 14/14 checks pass
Price
$0.001 to $222.00 p8 in Verification
Risk
clean no risk flag
Traction
$17.62 30d 3 buyers, top buyer 66% (address, not entity) Concentrated volume: 100% of 30d volume from 3 wallets
Last change
price changed 3d ago 7 in 30d
14/14 compliance checks
  • 402 payload captured
  • accepts[] array present
  • payTo address recoverable
  • payTo at accepts[0].payTo (conformant shape)
  • payTo is a valid on-chain address
  • atomic price declared
  • atomic price in a sane range
  • asset (token) address declared
  • network resolves to CAIP-2
  • payment scheme declared
  • served over HTTPS
  • declares the current x402 version (2)
  • EIP-712 domain parameters present on every EVM entry
  • x402 v2 envelope delivered in the payment-required header

402 terms unchanged since 2026-11-04. Last up 2026-11-07.

── Site signals

  • homepage reachable
  • openapi doc
  • pricing page
  • llms.txt
  • robots.txt
  • terms page
How the score works

What the score read on this service: status online, 99.7% uptime 30d, 459ms response p95, x402 compliance 14 of 14, $0.001 price against the category, on-chain traction measured. Each of those is measured, and each is published in full below.

The score comes from our own monitoring, never from reviews, operator claims, or a language model: reliability, x402 compliance, price against the category, a deterministic risk flag, and a small on-chain traction term, weighted by ranking generation 3. It is not placement anyone can buy: the paid verify tier is reported beside it and is not one of its inputs. Every component below stays published and read-only.

Bands on the 0 to 100 measured score: strong at 93 and above, solid from 75, mixed from 55, weak below 55. Price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, so the score places a service in its own field.

It is a score inside Verification, and only there: price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, which here means 186 listings, this one among them: the same 186 the position above is counted against. When the two differ, the field is the wider one, because a listing we have measured too little of to rank still sits in the field the price and the speed are normalized over. The same service in a different field would read differently. The same engine answers GET /api/v1/best, and asked for a different pool (the whole directory, or another filter) it returns a different number for this service under this same ranking generation. Neither is more correct: they answer different questions, and the methodology states which is which.

Settled via coinbase ($17.62, 70 tx). Traction is a conservative undercount; first settlement seen 2026-09-21.

All measured facts

What it does

Agents pay for work and prove what happened.

Agent Embassy is a listed x402 Verification API. Captured payment terms name Arbitrum One, Base. Monitoring and settlement figures below describe the observations available to this directory; an unpaid HTTP 402 check does not prove that a paid call will deliver.

Assessment computed at . Latest service check observed at . Service data JSON · Measurement methodology.

Page rendered at . This response time is separate from the observation and computation times attached to each measurement.

Latest endpoint observation: . Latest price capture: . Prices are recorded quotes, not a promise of availability. Token assets and payment terms are listed separately. Endpoint data JSON · Price history JSON · Measurement methodology.

Assessment computed at . Uptime uses the stated daily-rollup window; response times are in milliseconds, compliance is passed/evaluated checks, and traction is a measured settlement floor. The comparison score is out of 100 within this category. Assessment JSON · Measurement methodology.

Observed daily coverage: 2026-10-09 to 2026-11-07 UTC. Daily monitoring and settlement rollups do not expose their computation time; a bucket date is not an update timestamp. Latest settlement in the assessment: . Uptime and response JSON · Volume JSON · Buyers JSON · Measurement methodology.

Ranked from the measured category pool, refreshed at most once a minute. The comparison has no persisted computation timestamp; the assessment time above belongs to this service only. Ranking API documentation · Ranking methodology.

x402 List home · Services · Verification

uptime · latest daily rollup
100%
uptime 7d
99.8%
uptime 30d
99.7%
uptime 90d
99.8%
response p95
459ms
avg response
357ms
total checks
3,759

Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.

price (min)
$0.001
price (max)
$222.00
category percentile (min)
p8 in Verification
category percentile (max)
p99 in Verification
endpoints / prices
17 / 4
model
tiered
stability
24%

No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.

domain age
43d
registrar
Dynadot Inc
hosting
custom
domain created
2026-09-22

Identity facts, not a risk score.

assessment volume 30d
$17.62
exact assessment volume 30d (USD)
17.621
assessment recorded at (UTC)
2026-11-07T09:23:03.355Z
buyers 30d
3
settlements 30d
70
measured since
2026-09-21 (start of our harvest window)
last settlement
2026-10-24
top buyer share
66% of 30d volume (address, not entity)
top 3 buyers share
100% of 30d volume (addresses, not entities)
concentrated volume
yes
trend 7d vs 30d
0.37x the 30d daily rate
networks
eip155:8453
volume all-time
$20.57
settlements all-time
87
median settlement 30d
$0.25
max settlement 30d
$1.00

Assessment volume uses the latest 30d assessment. Over time sums daily address snapshots, rounded to cents and refreshed separately. The two sources can differ in timing, precision and shared-address attribution. Amounts use cents for comparison; known sub-cent values keep up to 12 significant digits. The exact stored assessment value is shown above.

Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.

Concentrated volume is one rule applied to every listed service: the 3 largest paying addresses hold at least 90% of 30d volume, with at least $10 of volume and 50 settlements in the same 30 days. While it applies, this service's volume counts as 0 in the Recommended and Highest volume sorts of the services list. The label says where the payments came from, not why.

Top buyer share lowers the on-chain traction part of the ranking score behind this page's verdict and /best, by up to half when one address holds all 30d volume. The Recommended and Highest volume sorts of the services list do not use it; they use the Concentrated volume rule instead.

member since
2026-09-23
Recent checks
Latest 18 unpaid HTTP checks, newest first; response times in milliseconds, observation times in UTC
Checked at (UTC)StatusHTTPResponseEndpoints
Online402386ms17
Online402104ms17
Online40285ms17
Online402110ms17
Online40294ms17
Online402131ms17
Online402108ms17
Online402354ms17
Online402326ms17
Online402124ms17
Online402111ms17
Online402242ms17
Online402459ms17
Online402263ms17
Online402236ms17
Online402423ms17
Online402152ms17
Online402120ms17

Changes7 in 30d

Latest 7 recorded changes, up to 10 in the last 30 days; newest first; observation times in UTC
Observed at (UTC)ChangeEvidence
price changed

POST /v1/copy/correct · eip155:42161 · USD Coin: 25000000 → 1000000

POST /v1/copy/correct · eip155:8453 · USDC: 25000000 → 1000000

price changed

POST /v1/check/verify · eip155:42161 · USD Coin: 50000 → 1000

POST /v1/check/verify · eip155:8453 · USDC: 50000 → 1000

price changed

POST /v1/research/paper · eip155:42161 · USD Coin: 1000000 → 222000000

POST /v1/research/paper · eip155:8453 · USDC: 1000000 → 222000000

price changed

POST /v1/check/verify · eip155:42161 · USD Coin: 1000 → 50000

POST /v1/check/verify · eip155:8453 · USDC: 1000 → 50000

POST /v1/copy/correct · eip155:42161 · USD Coin: 1000000 → 25000000

POST /v1/copy/correct · eip155:8453 · USDC: 1000000 → 25000000

price changed

POST /v1/check/verify · eip155:42161 · USD Coin: 50000 → 1000

POST /v1/check/verify · eip155:8453 · USDC: 50000 → 1000

POST /v1/copy/correct · eip155:42161 · USD Coin: 25000000 → 1000000

POST /v1/copy/correct · eip155:8453 · USDC: 25000000 → 1000000

POST /v1/research/paper · eip155:42161 · USD Coin: 222000000 → 1000000

POST /v1/research/paper · eip155:8453 · USDC: 222000000 → 1000000

schema changed

schema added GET /v1/markets/compute/spot exact algorand:wghe2pwdvd7s12bl5faop20egyesn73ktic1qzkkit8= 31566704 UNKNOWN 2 300 {}

price changed

POST /v1/check/verify · eip155:42161 · USD Coin: 150000 → 50000

POST /v1/check/verify · eip155:8453 · USDC: 150000 → 50000

Amounts are on-wire atomic units in the named asset.

all changes

Over time

On-chain volume daily snapshots, USD 30d: $17.62, peak $6.55 on 10-15
volume no data in the payload
Distinct buyers per dayDistinct buyers per day
Uptime 5 of 29 completed days below 100%
uptime below 100%, to scale
Volume 30d
$17.62
Uptime
5 of 29 completed days below 100%
Daily on-chain settlement volume in US dollars, 2026-10-09 to 2026-11-07; highest day $6.55 on 10-15; 21 days have no data in the payload; distinct buyers per day
More charts
Response time daily average, ms min 193ms, avg 243ms, max 300ms

10-09 to 11-07* UTC

Scores over time

x402 compliance 13/14 to 10-13, 14/14 from 10-14 low 13/14, high 14/14

10-09 to 11-07* UTC

Price percentile in Verification own low to high; exact values below

10-09 to 11-07* UTC

Site signals present (of 6) own low to high; exact values below

10-09 to 11-07* UTC

Scores: one day per column, 10-09 to 11-07*, on the columns of Response time. Uptime held below 100% on some days in this window, including any partial day. Daily readings remain in the Uptime strip and Values. Compliance is drawn on its own two values; the checklist grew from 11 to 14 checks on 2026-07-28, before this window. Pillar lines use their own low and high. Exact dated readings are available in each readout and in Values.

Each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/agent-embassy/price, /scores, /volume and /buyers.

Values

* today so far, partial (UTC).

The uptime summary counts completed UTC days only. The strip, readouts and table retain today's partial reading.

Daily snapshot total, 30d: $15.69, peak $6.55 on 10-15. The visible 30d total in Traction comes from the latest assessment. These sources can differ in their window, refresh time, cent rounding and shared-address attribution.

Daily address snapshots: 2026-10-09 to 2026-11-07 UTC; * today so far, partial (UTC). Daily snapshots store cents. A recorded $0.00 with settlements cannot distinguish exact zero from volume rounded away. Lost precision is unavailable here. † marks a recorded $0.00 with settlements.

Settlement volume uses the stored USD valuation of tracked payments; it is distinct from token quantities. USD-pegged assets are valued at 1 USD per token in these rollups. The measured settlement floor does not cover all payments to this service.

Assessment history last recorded at . Each UTC day uses its last recorded run; missing readings stay unmeasured. Assessment history JSON · Measurement methodology.

Daily values, 2026-10-09 to 2026-11-07: address settlement volume in USD, distinct buyer and settlement counts, uptime percent, average response milliseconds, compliance passed/total, price percentile 0-100, site signals out of 6; UTC dates
DayVolumeBuyersSettlementsUptimeResponseCompliancePrice percentileSite signals
2026-10-09no datano datano data100%288.80ms13/14p914/6
2026-10-10no datano datano data100%263.84ms13/14p914/6
2026-10-11no datano datano data100%264.48ms13/14p914/6
2026-10-12no datano datano data100%255.74ms13/14p914/6
2026-10-13no datano datano data100%224.17ms13/14p914/6
2026-10-14no datano datano data100%230.03ms14/14p914/6
2026-10-15$6.55226100%207.50ms14/14p794/6
2026-10-16$0.251197.78%300.05ms14/14p794/6
2026-10-17$1.301695.51%269.81ms14/14p794/6
2026-10-18no datano datano data100%254.99ms14/14p794/6
2026-10-19no datano datano data100%235.20ms14/14p794/6
2026-10-20no datano datano data98.88%240.27ms14/14p794/6
2026-10-21$5.31120100%219.63ms14/14p794/6
2026-10-22no datano datano data100%192.75ms14/14p794/6
2026-10-23$1.261498.88%216.41ms14/14p84/6
2026-10-24$0.2511100%225.98ms14/14p84/6
2026-10-25no datano datano data100%247.75ms14/14p84/6
2026-10-26no datano datano data100%225.99ms14/14p84/6
2026-10-27no datano datano data100%216.67ms14/14p74/6
2026-10-28$0.7513100%238.93ms14/14p74/6
2026-10-29no datano datano data100%282.90ms14/14p84/6
2026-10-30no datano datano data100%248.66ms14/14p84/6
2026-10-31no datano datano data100%210.73ms14/14p84/6
2026-11-01no datano datano data100%210.30ms14/14p84/6
2026-11-02no datano datano data98.86%263.77ms14/14p84/6
2026-11-03$0.0215100%296.53ms14/14p84/6
2026-11-04no datano datano data100%267.07ms14/14p84/6
2026-11-05$0.00 recorded†11100%284.13ms14/14p85/6
2026-11-06no datano datano data100%219.88ms14/14p85/6
2026-11-07*no datano datano data100%192.64ms14/14p85/6

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5 of 185 other ranked services in Verification, ordered by the same measured score.

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Keep this listing accurate. Ownership is proven with a domain check and every change is reviewed by hand.

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Delisting

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