agent-exec

payment-readydegraded

payment-ready until 2026-10-23

agent-exec -- accountless, pay-per-use code execution for agents over x402, plus a free directory of x402 services in which every row publishes its own liveness-probe result.

agent-exec.448c.org ↗

Call it x402 v2

x402 v2

Base URL: https://agent-exec.448c.org
Payment: x402 v2, header channel

$ curl -i -X POST 'https://agent-exec.448c.org/attest'

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

Endpoints 15 paid routes on agent-exec.448c.org

POST/attestBase+Sol$0.008since 10-14

POST/check/addressBase+Sol$0.02since 10-14

POST/check/urlBase+Sol$0.02since 10-14

POST/claimBase+Sol$0.0052since 10-14

POST/deadmanBase+Sol$0.0054since 10-14

POST/dnsBase+Sol$0.50since 10-14

POST/driftBase+Sol$0.0061since 10-14

POST/executeBase+Sol$0.001since 08-31

7 more in Example 402 response

Prices as captured in the 402 response: median $0.008 across the 15 endpoints.

Example 402 response

Endpoints and prices

Current paid endpoints; minimum quoted prices in USD where available; first capture dates in UTC
Method	Path	Description	Price	Network	Asset	402 channel	Captured
POST	/attest	POST /attest -- Fetch a URL from our vantage point and return a signed, timestamped attestation of what we saw (hash, status, headers) -- never the body. Retrievable afterwards for free at /attest/{attestation_id}.	$0.008	Base+Sol	USDC	header	since 10-14
POST	/check/address	POST /check/address -- Check an EVM address against public risk feeds (OFAC, community darklists, on-chain age) and get back a verdict, score and reasons.	$0.02	Base+Sol	USDC	header	since 10-14
POST	/check/url	POST /check/url -- Check a URL against public risk feeds (phishing lists, domain age, lexical signals) and get back a verdict, score and reasons.	$0.02	Base+Sol	USDC	header	since 10-14
POST	/claim	POST /claim -- Atomically win a caller-named key for 3600 seconds (hour plan), or learn who already holds it. Scoped to your own paying wallet -- coordinates one wallet's own fleet, not mutually distrusting strangers.	$0.0052	Base+Sol	USDC	header	since 10-14
POST	/deadman	POST /deadman -- Register an irreversible-action intent with a lease and a verification probe. Confirm before expiry at POST /deadman/{id}/confirm, or the probe runs on your behalf and the verdict (confirmed-by-probe / refuted-by-probe / unresolved) is published at GET /deadman/{id}, free, forever.	$0.0054	Base+Sol	USDC	header	since 10-14
POST	/dns	POST /dns -- Rent <label>.448c.net for a year and point it where you say: A, AAAA, CNAME and TXT records, so you can hold a TLS certificate and pass domain-trust checks without a registrar account. The paying wallet owns the name. Readable afterwards for free at /dns/{name}.	$0.50	Base+Sol	USDC	header	since 10-14
POST	/drift	POST /drift -- Re-fetch a venue endpoint we already snapshot and diff it against our archived baseline: field_added/removed, weight re-basing, enum growth, fleet-wide nulling. Returns BOTH raw bodies so you can verify the diff yourself. Body is JSON: {"venue": "..."} -- venue is one of the endpoints we already snapshot. Equivalent to POST /drift/{venue}, where GET /drift/{venue} is free and reports whether a baseline exists.	$0.0061	Base+Sol	USDC	header	since 10-14
POST	/execute	POST /execute -- Execute python3/node code in an isolated, network-less sandbox; returns stdout, stderr, exit code as JSON. No account needed -- pay per request over x402. Tier: default ($0.0010).	$0.001	Base+Sol	USDC	header	since 08-31
POST	/handoff	POST /handoff -- Deposit a typed briefing for your successor process (what's done and how it was verified, what's not done, what was in flight, what to pick up first). Returns an id; fetch it back for free at /handoff/{id}, no identity required.	$0.0053	Base+Sol	USDC	header	since 10-14
POST	/inbox	POST /inbox -- Pay for a disposable, receive-only email address for 24 hours and read what arrives: GET /inbox/{id}/messages returns each mail as text with any verification codes and links extracted, free and owner-signed. Nothing is ever sent from it. Repeat the payment with {id} to extend. Problems or abuse: POST /feedback.	$0.02	Base+Sol	USDC	header	since 10-14
POST	/listing	POST /listing -- Order a listing campaign for your service across every permissionless agent venue we know: each venue classified, submitted to wherever we have a submitter for it, and each entry proven in the catalogue by reading it back, weekly for 90 days. A venue we cannot yet submit to for you stays `queued` and is reported as owed, never as done. The paying wallet owns the order, readable owner-signed at /listing/{id}. Venues that need a human, or charge for an entry, are reported with the reason and never charged for.	$0.25	Base+Sol	USDC	header	since 10-14
POST	/listings/promote	POST /listings/promote -- Paid placement in the agent-exec directory: promoted listings outrank free ones while paid ($0.0667/day, $0.3333/week, $1/month) and demote once payment lapses. This entry buys day ($0.0667). Not a review -- payment doesn't verify or endorse a listing. No account needed; pay over x402.	$0.0667	Base+Sol	USDC	header	since 08-31
POST	/pay	POST /pay -- Deliver an x402 authorization YOU signed to a seller exactly once, then check the chain for what became of it, and get back a signed-in-time receipt of what the seller answered. Retrievable afterwards for free at /pay/{id}.	$0.02	Base+Sol	USDC	header	since 10-14
POST	/storage	POST /storage -- Store up to 65536 bytes for 86400 seconds (small plan). Readable only by the paying wallet.	$0.0051	Base+Sol	USDC	header	since 10-14
POST	/watch	POST /watch -- Register a durable poll of a URL, priced by intervalSeconds x ttlSeconds. Read the current verdict, free, forever, at GET /watch/{id} -- lastPolledAt/nextPollDueAt/overdue tell you if the sweeper has fallen behind.	$0.0058	Base+Sol	USDC	header	since 10-14

Payment evidence

402 payload captured at 2026-10-14 14:48:06 UTC. Check evidence JSON · Measurement methodology.

{
  "error": "X-PAYMENT header is required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xc8Fceb0F3611BE99c41586eA2B83F6A0911d2Ff0",
      "amount": "5100",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "HzUdRhSZMrSg5sbPCjToWFGCkSf2yfSE33m5NWaBC4rh"
      },
      "payTo": "GPbCdSaF5Qcfr5kdundH3etood2q5rafnRwdvVrs3Tan",
      "amount": "5100",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://agent-exec.448c.org/storage",
    "mimeType": "application/json",
    "description": "POST /storage -- Store up to 65536 bytes for 86400 seconds (small plan). Readable only by the paying wallet."
  },
  "extensions": {
    "outputSchema": {
      "input": {
        "type": "http",
        "method": "POST",
        "bodyType": "binary",
        "queryParams": {
          "plan": {
            "enum": [
              "small",
              "medium",
              "large",
              "year"
            ],
            "type": "string",
            "required": true,
            "description": "One of: small, medium, large, year."
          },
          "label": {
            "type": "string",
            "required": false,
            "description": "Optional, at most 128 characters, no control characters. A name of your own choosing for this object, stored verbatim and returned on every GET /storage/list row, so a later run that no longer remembers the id can still tell which object is which without downloading them."
          }
        },
        "discoverable": false
      },
      "output": {
        "type": "json",
        "example": {
          "id": "00000000-0000-4000-8000-000000000000",
          "plan": "small",
          "payment": {
            "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "payer": "0x0000000000000000000000000000000000dEaD",
            "amount": "5100",
            "network": "base",
            "transaction": "0x0000000000000000000000000000000000000000000000000000000000000000"
          },
          "expiresAt": 1700000000000
        }
      }
    }
  },
  "x402Version": 2
}

Other captured 402 responses (14)

Captured payload 2 of 15

{
  "error": "X-PAYMENT header is required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xc8Fceb0F3611BE99c41586eA2B83F6A0911d2Ff0",
      "amount": "5200",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "HzUdRhSZMrSg5sbPCjToWFGCkSf2yfSE33m5NWaBC4rh"
      },
      "payTo": "GPbCdSaF5Qcfr5kdundH3etood2q5rafnRwdvVrs3Tan",
      "amount": "5200",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://agent-exec.448c.org/claim",
    "mimeType": "application/json",
    "description": "POST /claim -- Atomically win a caller-named key for 3600 seconds (hour plan), or learn who already holds it. Scoped to your own paying wallet -- coordinates one wallet's own fleet, not mutually distrusting strangers."
  },
  "extensions": {
    "outputSchema": {
      "input": {
        "type": "http",
        "method": "POST",
        "bodyType": "json",
        "bodyFields": {
          "key": {
            "type": "string",
            "required": true,
            "description": "1..256 UTF-8 bytes, no '/' character -- the name you want to hold, scoped to your own wallet."
          },
          "plan": {
            "enum": [
              "hour",
              "day",
              "week"
            ],
            "type": "string",
            "required": true,
            "description": "One of: hour, day, week."
          },
          "holder": {
            "type": "string",
            "required": true,
            "description": "1..256 UTF-8 bytes -- an id identifying which of your processes is claiming it."
          }
        },
        "discoverable": false
      },
      "output": {
        "type": "json",
        "example": {
          "plan": "hour",
          "claim": {
            "key": "deploy-lock",
            "holder": "worker-3",
            "expiresAt": 1700003600000,
            "acquiredAt": 1700000000000
          },
          "outcome": "acquired",
          "payment": {
            "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "payer": "0x0000000000000000000000000000000000dEaD",
            "amount": "5200",
            "network": "base",
            "transaction": "0x0000000000000000000000000000000000000000000000000000000000000000"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 3 of 15

{
  "error": "X-PAYMENT header is required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xc8Fceb0F3611BE99c41586eA2B83F6A0911d2Ff0",
      "amount": "8000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "HzUdRhSZMrSg5sbPCjToWFGCkSf2yfSE33m5NWaBC4rh"
      },
      "payTo": "GPbCdSaF5Qcfr5kdundH3etood2q5rafnRwdvVrs3Tan",
      "amount": "8000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://agent-exec.448c.org/attest",
    "mimeType": "application/json",
    "description": "POST /attest -- Fetch a URL from our vantage point and return a signed, timestamped attestation of what we saw (hash, status, headers) -- never the body. Retrievable afterwards for free at /attest/{attestation_id}."
  },
  "extensions": {
    "outputSchema": {
      "input": {
        "type": "http",
        "method": "POST",
        "bodyType": "json",
        "bodyFields": {
          "url": {
            "type": "string",
            "required": true,
            "description": "An absolute http:// or https:// URL, at most 2048 UTF-8 bytes. Fetched from OUR vantage point; the body is never returned to you."
          }
        },
        "discoverable": false
      },
      "output": {
        "type": "json",
        "example": {
          "url": "https://example.com/terms",
          "detail": null,
          "payment": {
            "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "payer": "0x0000000000000000000000000000000000dEaD",
            "amount": "8000",
            "network": "base",
            "transaction": "0x0000000000000000000000000000000000000000000000000000000000000000"
          },
          "fetch_ok": true,
          "redirects": 0,
          "signature": "0x00",
          "body_bytes": 1234,
          "fetch_code": "ATTEST_FETCH_OK",
          "body_sha256": "0000000000000000000000000000000000000000000000000000000000000000",
          "http_status": 200,
          "observed_at": "2026-09-02T00:00:00.000Z",
          "content_type": "text/html; charset=utf-8",
          "attestation_id": "018f5b2e-0000-7000-8000-000000000000",
          "body_truncated": false,
          "signer_address": "0x0000000000000000000000000000000000dEaD",
          "final_url_after_redirects": "https://example.com/terms"
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 4 of 15

{
  "error": "X-PAYMENT header is required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xc8Fceb0F3611BE99c41586eA2B83F6A0911d2Ff0",
      "amount": "5300",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 60
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "HzUdRhSZMrSg5sbPCjToWFGCkSf2yfSE33m5NWaBC4rh"
      },
      "payTo": "GPbCdSaF5Qcfr5kdundH3etood2q5rafnRwdvVrs3Tan",
      "amount": "5300",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://agent-exec.448c.org/handoff",
    "mimeType": "application/json",
    "description": "POST /handoff -- Deposit a typed briefing for your successor process (what's done and how it was verified, what's not done, what was in flight, what to pick up first). Returns an id; fetch it back for free at /handoff/{id}, no identity required."
  },
  "extensions": {
    "outputSchema": {
      "input": {
        "type": "http",
        "method": "POST",
        "bodyType": "json",
        "bodyFields": {
          "done": {
            "type": "array",
            "required": true,
            "description": "Claims that are DONE. Each must be { text, confidence: \"measured\", evidence } -- evidence describing how it was verified is mandatory."
          },
          "notDone": {
            "type": "array",
            "required": true,
            "description": "Claims that are NOT done. { text, confidence, evidence }, confidence may be \"measured\" or \"unverified\"."
          },
          "inFlight": {
            "type": "array",
            "required": true,
            "description": "Claims that were in flight at the cut. Same claim shape as notDone."
          },
          "pickUpFirst": {
            "type": "string",
            "required": true,
            "description": "What the successor should do first."
          }
        },
        "discoverable": false
      },
      "output": {
        "type": "json",
        "example": {
          "id": "018f5b2e-0000-7000-8000-000000000000",
          "payment": {
            "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "payer": "0x0000000000000000000000000000000000dEaD",
            "amount": "5300",
            "network": "base",
            "transaction": "0x0000000000000000000000000000000000000000000000000000000000000000"
          },
          "expiresAt": 1700000000000
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 5 of 15

{
  "error": "X-PAYMENT header is required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xc8Fceb0F3611BE99c41586eA2B83F6A0911d2Ff0",
      "amount": "5400",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 60
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "HzUdRhSZMrSg5sbPCjToWFGCkSf2yfSE33m5NWaBC4rh"
      },
      "payTo": "GPbCdSaF5Qcfr5kdundH3etood2q5rafnRwdvVrs3Tan",
      "amount": "5400",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://agent-exec.448c.org/deadman",
    "mimeType": "application/json",
    "description": "POST /deadman -- Register an irreversible-action intent with a lease and a verification probe. Confirm before expiry at POST /deadman/{id}/confirm, or the probe runs on your behalf and the verdict (confirmed-by-probe / refuted-by-probe / unresolved) is published at GET /deadman/{id}, free, forever."
  },
  "extensions": {
    "outputSchema": {
      "input": {
        "type": "http",
        "method": "POST",
        "bodyType": "json",
        "bodyFields": {
          "probe": {
            "type": "object",
            "required": true,
            "description": "{ url, expectedBodyContains?, expectedStatus? } -- at least one predicate is required."
          },
          "description": {
            "type": "string",
            "required": true,
            "description": "What you are about to do."
          },
          "leaseSeconds": {
            "type": "number",
            "required": true,
            "description": "How long before an unconfirmed entry's probe runs (1-604800)."
          }
        },
        "discoverable": false
      },
      "output": {
        "type": "json",
        "example": {
          "id": "018f5b2e-0000-7000-8000-000000000000",
          "probe": {
            "url": "https://example.com/health",
            "expectedStatus": 200
          },
          "status": "pending",
          "payment": {
            "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "payer": "0x0000000000000000000000000000000000dEaD",
            "amount": "5400",
            "network": "base",
            "transaction": "0x0000000000000000000000000000000000000000000000000000000000000000"
          },
          "createdAt": 1700000000000,
          "description": "Deploying release v42 to prod",
          "leaseExpiresAt": 1700003600000
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 6 of 15

{
  "error": "X-PAYMENT header is required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xc8Fceb0F3611BE99c41586eA2B83F6A0911d2Ff0",
      "amount": "6100",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "HzUdRhSZMrSg5sbPCjToWFGCkSf2yfSE33m5NWaBC4rh"
      },
      "payTo": "GPbCdSaF5Qcfr5kdundH3etood2q5rafnRwdvVrs3Tan",
      "amount": "6100",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://agent-exec.448c.org/drift",
    "mimeType": "application/json",
    "description": "POST /drift -- Re-fetch a venue endpoint we already snapshot and diff it against our archived baseline: field_added/removed, weight re-basing, enum growth, fleet-wide nulling. Returns BOTH raw bodies so you can verify the diff yourself. Body is JSON: {\"venue\": \"...\"} -- venue is one of the endpoints we already snapshot. Equivalent to POST /drift/{venue}, where GET /drift/{venue} is free and reports whether a baseline exists."
  },
  "extensions": {
    "outputSchema": {
      "input": {
        "type": "http",
        "method": "POST",
        "bodyType": "json",
        "bodyFields": {
          "venue": {
            "enum": [
              "agentry",
              "clearedindex",
              "percall",
              "verantis",
              "x402-list"
            ],
            "type": "string",
            "pattern": "^[a-zA-Z0-9_-]+$",
            "required": true,
            "description": "One of the endpoints we already snapshot."
          }
        },
        "discoverable": false
      },
      "output": {
        "type": "json",
        "example": {
          "t1": {
            "url": "https://example.com/api/score",
            "body": "{\"...\":\"...\"}",
            "body_bytes": 1234,
            "fetched_at": "2026-09-01T00:00:00.000Z",
            "body_sha256": "0000000000000000000000000000000000000000000000000000000000000000",
            "http_status": 200,
            "content_type": "application/json"
          },
          "t2": {
            "url": "https://example.com/api/score",
            "body": "{\"...\":\"...\"}",
            "detail": null,
            "fetch_ok": true,
            "body_bytes": 1256,
            "fetch_code": "DRIFT_FETCH_OK",
            "fetched_at": "2026-09-04T00:00:00.000Z",
            "body_sha256": "1111111111111111111111111111111111111111111111111111111111111111",
            "http_status": 200,
            "content_type": "application/json",
            "body_truncated": false
          },
          "venue": "percall",
          "events": [
            {
              "path": "$.checks[].weight",
              "type": "weights_rebased",
              "after": {
                "max": 20,
                "min": 0,
                "sum": 122,
                "count": 20
              },
              "field": "weight",
              "before": {
                "max": 20,
                "min": 0,
                "sum": 100,
                "count": 10
              }
            }
          ],
          "payment": {
            "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "payer": "0x0000000000000000000000000000000000dEaD",
            "amount": "6100",
            "network": "base",
            "transaction": "0x0000000000000000000000000000000000000000000000000000000000000000"
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 7 of 15

{
  "error": "X-PAYMENT header is required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xc8Fceb0F3611BE99c41586eA2B83F6A0911d2Ff0",
      "amount": "5800",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 60
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "HzUdRhSZMrSg5sbPCjToWFGCkSf2yfSE33m5NWaBC4rh"
      },
      "payTo": "GPbCdSaF5Qcfr5kdundH3etood2q5rafnRwdvVrs3Tan",
      "amount": "5800",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://agent-exec.448c.org/watch",
    "mimeType": "application/json",
    "description": "POST /watch -- Register a durable poll of a URL, priced by intervalSeconds x ttlSeconds. Read the current verdict, free, forever, at GET /watch/{id} -- lastPolledAt/nextPollDueAt/overdue tell you if the sweeper has fallen behind."
  },
  "extensions": {
    "outputSchema": {
      "input": {
        "type": "http",
        "method": "POST",
        "bodyType": "json",
        "bodyFields": {
          "url": {
            "type": "string",
            "required": true,
            "description": "Absolute http(s) URL to poll."
          },
          "predicate": {
            "type": "object",
            "required": true,
            "description": "One of {type:\"statusChanged\"} / {type:\"statusEquals\",status} / {type:\"bodyContains\",value} / {type:\"bodyNotContains\",value} / {type:\"jsonPathEquals\",path,value} / {type:\"jsonPathNotEquals\",path,value} / {type:\"changedFromNow\",path?}."
          },
          "storageKey": {
            "type": "string",
            "required": false,
            "description": "Deliver a matched observation into /storage under this key (as its label), at most 128 characters."
          },
          "ttlSeconds": {
            "type": "number",
            "required": true,
            "description": "Stop polling after this many seconds (60-604800, at least intervalSeconds)."
          },
          "intervalSeconds": {
            "type": "number",
            "required": true,
            "description": "Seconds between polls (60-86400)."
          }
        },
        "discoverable": false
      },
      "output": {
        "type": "json",
        "example": {
          "id": "018f5b2e-0000-7000-8000-000000000000",
          "url": "https://example.com/health",
          "status": "active",
          "overdue": false,
          "payment": {
            "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "payer": "0x0000000000000000000000000000000000dEaD",
            "amount": "5800",
            "network": "base",
            "transaction": "0x0000000000000000000000000000000000000000000000000000000000000000"
          },
          "createdAt": 1700000000000,
          "predicate": {
            "type": "statusEquals",
            "status": 200
          },
          "ttlSeconds": 3600,
          "lastPolledAt": null,
          "ttlExpiresAt": 1700003600000,
          "nextPollDueAt": 1700000000000,
          "intervalSeconds": 300
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 8 of 15

{
  "error": "X-PAYMENT header is required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xc8Fceb0F3611BE99c41586eA2B83F6A0911d2Ff0",
      "amount": "20000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 60
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "HzUdRhSZMrSg5sbPCjToWFGCkSf2yfSE33m5NWaBC4rh"
      },
      "payTo": "GPbCdSaF5Qcfr5kdundH3etood2q5rafnRwdvVrs3Tan",
      "amount": "20000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://agent-exec.448c.org/check/address",
    "mimeType": "application/json",
    "description": "POST /check/address -- Check an EVM address against public risk feeds (OFAC, community darklists, on-chain age) and get back a verdict, score and reasons."
  },
  "extensions": {
    "outputSchema": {
      "input": {
        "type": "http",
        "method": "POST",
        "bodyType": "json",
        "bodyFields": {
          "chain": {
            "type": "string",
            "required": false,
            "description": "\"base\" or \"ethereum\" -- default \"base\"."
          },
          "address": {
            "type": "string",
            "required": true,
            "description": "An EVM (0x...) address to check."
          }
        },
        "discoverable": false
      },
      "output": {
        "type": "json",
        "example": {
          "score": 0,
          "payment": {
            "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "payer": "0x0000000000000000000000000000000000dEaD",
            "amount": "20000",
            "network": "base",
            "transaction": "0x0000000000000000000000000000000000000000000000000000000000000000"
          },
          "reasons": [
            "no risk signals found in the checked sources"
          ],
          "sources": [
            "ofac",
            "ethereum-lists/darklist"
          ],
          "verdict": "safe",
          "disclaimer": "Best-effort signal, not a guarantee; not financial advice. Aggregates public risk feeds."
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 9 of 15

{
  "error": "X-PAYMENT header is required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xc8Fceb0F3611BE99c41586eA2B83F6A0911d2Ff0",
      "amount": "20000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 60
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "HzUdRhSZMrSg5sbPCjToWFGCkSf2yfSE33m5NWaBC4rh"
      },
      "payTo": "GPbCdSaF5Qcfr5kdundH3etood2q5rafnRwdvVrs3Tan",
      "amount": "20000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://agent-exec.448c.org/check/url",
    "mimeType": "application/json",
    "description": "POST /check/url -- Check a URL against public risk feeds (phishing lists, domain age, lexical signals) and get back a verdict, score and reasons."
  },
  "extensions": {
    "outputSchema": {
      "input": {
        "type": "http",
        "method": "POST",
        "bodyType": "json",
        "bodyFields": {
          "url": {
            "type": "string",
            "required": true,
            "description": "An http(s) URL or bare domain to check."
          }
        },
        "discoverable": false
      },
      "output": {
        "type": "json",
        "example": {
          "score": 0,
          "payment": {
            "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "payer": "0x0000000000000000000000000000000000dEaD",
            "amount": "20000",
            "network": "base",
            "transaction": "0x0000000000000000000000000000000000000000000000000000000000000000"
          },
          "reasons": [
            "no risk signals found in the checked sources"
          ],
          "sources": [
            "phishing-list",
            "rdap-domain-age"
          ],
          "verdict": "safe",
          "disclaimer": "Best-effort signal, not a guarantee; not financial advice. Aggregates public risk feeds."
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 10 of 15

{
  "error": "X-PAYMENT header is required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xc8Fceb0F3611BE99c41586eA2B83F6A0911d2Ff0",
      "amount": "20000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "HzUdRhSZMrSg5sbPCjToWFGCkSf2yfSE33m5NWaBC4rh"
      },
      "payTo": "GPbCdSaF5Qcfr5kdundH3etood2q5rafnRwdvVrs3Tan",
      "amount": "20000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://agent-exec.448c.org/pay",
    "mimeType": "application/json",
    "description": "POST /pay -- Deliver an x402 authorization YOU signed to a seller exactly once, then check the chain for what became of it, and get back a signed-in-time receipt of what the seller answered. Retrievable afterwards for free at /pay/{id}."
  },
  "extensions": {
    "outputSchema": {
      "input": {
        "type": "http",
        "method": "POST",
        "bodyType": "json",
        "bodyFields": {
          "body": {
            "type": "string",
            "required": false,
            "description": "Optional request body for the seller, at most 65536 UTF-8 bytes."
          },
          "method": {
            "type": "string",
            "required": true,
            "description": "The HTTP method to call the seller with: one of GET, POST, PUT, PATCH, DELETE."
          },
          "headers": {
            "type": "object",
            "required": false,
            "description": "Optional request headers for the seller, at most 20 string values."
          },
          "sellerUrl": {
            "type": "string",
            "required": true,
            "description": "The seller endpoint to deliver the authorization to, an absolute http:// or https:// URL of at most 2048 UTF-8 bytes."
          },
          "authorization": {
            "type": "object",
            "required": true,
            "description": "The x402 authorization YOU already signed for the seller: {headerName: \"X-PAYMENT\"|\"PAYMENT-SIGNATURE\", header: base64 PaymentPayload, asset: the token contract it was signed against}. We never sign it."
          }
        },
        "discoverable": false
      },
      "output": {
        "type": "json",
        "example": {
          "id": "018f5b2e-0000-7000-8000-000000000000",
          "wallet": "0x0000000000000000000000000000000000dEaD",
          "payment": {
            "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "payer": "0x0000000000000000000000000000000000dEaD",
            "amount": "20000",
            "network": "base",
            "transaction": "0x0000000000000000000000000000000000000000000000000000000000000000"
          },
          "verdict": "settled",
          "delivered": true,
          "seller_url": "https://seller.example/resource",
          "verdict_tx": null,
          "seller_body": "{\"ok\":true}",
          "requested_at": "2026-09-02T00:00:00.000Z",
          "responded_at": "2026-09-02T00:00:01.000Z",
          "seller_method": "POST",
          "seller_reason": null,
          "seller_status": 200,
          "seller_body_bytes": 11,
          "verdict_checked_at": "2026-09-02T00:00:02.000Z",
          "seller_body_truncated": false
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 11 of 15

{
  "error": "X-PAYMENT header is required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xc8Fceb0F3611BE99c41586eA2B83F6A0911d2Ff0",
      "amount": "20000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "HzUdRhSZMrSg5sbPCjToWFGCkSf2yfSE33m5NWaBC4rh"
      },
      "payTo": "GPbCdSaF5Qcfr5kdundH3etood2q5rafnRwdvVrs3Tan",
      "amount": "20000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://agent-exec.448c.org/inbox",
    "mimeType": "application/json",
    "description": "POST /inbox -- Pay for a disposable, receive-only email address for 24 hours and read what arrives: GET /inbox/{id}/messages returns each mail as text with any verification codes and links extracted, free and owner-signed. Nothing is ever sent from it. Repeat the payment with {id} to extend. Problems or abuse: POST /feedback."
  },
  "extensions": {
    "outputSchema": {
      "input": {
        "type": "http",
        "method": "POST",
        "bodyType": "json",
        "bodyFields": {
          "id": {
            "type": "string",
            "required": false,
            "description": "An inbox id this same wallet already owns: extends it 24 h from its current expiry instead of issuing a new address. Omit for a new address."
          }
        },
        "discoverable": false
      },
      "output": {
        "type": "json",
        "example": {
          "id": "018f5b2e-0000-7000-8000-000000000000",
          "chain": "base",
          "owner": "0x0000000000000000000000000000000000dEaD",
          "address": "[email protected]",
          "expired": false,
          "payment": {
            "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "payer": "0x0000000000000000000000000000000000dEaD",
            "amount": "20000",
            "network": "base",
            "transaction": "0x0000000000000000000000000000000000000000000000000000000000000000"
          },
          "extended": false,
          "freeTier": false,
          "createdAt": "2026-09-02T00:00:00.000Z",
          "expiresAt": "2026-09-03T00:00:00.000Z",
          "messageCount": 0
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 12 of 15

{
  "error": "X-PAYMENT header is required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xc8Fceb0F3611BE99c41586eA2B83F6A0911d2Ff0",
      "amount": "500000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 60
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "HzUdRhSZMrSg5sbPCjToWFGCkSf2yfSE33m5NWaBC4rh"
      },
      "payTo": "GPbCdSaF5Qcfr5kdundH3etood2q5rafnRwdvVrs3Tan",
      "amount": "500000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://agent-exec.448c.org/dns",
    "mimeType": "application/json",
    "description": "POST /dns -- Rent <label>.448c.net for a year and point it where you say: A, AAAA, CNAME and TXT records, so you can hold a TLS certificate and pass domain-trust checks without a registrar account. The paying wallet owns the name. Readable afterwards for free at /dns/{name}."
  },
  "extensions": {
    "outputSchema": {
      "input": {
        "type": "http",
        "method": "POST",
        "bodyType": "json",
        "bodyFields": {
          "label": {
            "type": "string",
            "required": true,
            "description": "The label to rent under 448c.net: string matching ^[a-z0-9][a-z0-9-]{1,30}$, and not one of: www, mail, ns1, ns2, agent-exec, sentinel, admin, api, _acme-challenge."
          },
          "records": {
            "type": "array",
            "required": true,
            "description": "1 to 10 records, each {type: A|AAAA|CNAME|TXT, value: string, ttl: 60-3600 seconds}."
          }
        },
        "discoverable": false
      },
      "output": {
        "type": "json",
        "example": {
          "name": "example.448c.net",
          "plan": "year",
          "owner": "0x0000000000000000000000000000000000dEaD",
          "payment": {
            "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "payer": "0x0000000000000000000000000000000000dEaD",
            "amount": "500000",
            "network": "base",
            "transaction": "0x0000000000000000000000000000000000000000000000000000000000000000"
          },
          "records": [
            {
              "ttl": 300,
              "type": "A",
              "value": "203.0.113.10"
            }
          ],
          "expiresAt": 1800000000000
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 13 of 15

{
  "error": "X-PAYMENT header is required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xc8Fceb0F3611BE99c41586eA2B83F6A0911d2Ff0",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 60
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "HzUdRhSZMrSg5sbPCjToWFGCkSf2yfSE33m5NWaBC4rh"
      },
      "payTo": "GPbCdSaF5Qcfr5kdundH3etood2q5rafnRwdvVrs3Tan",
      "amount": "250000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://agent-exec.448c.org/listing",
    "mimeType": "application/json",
    "description": "POST /listing -- Order a listing campaign for your service across every permissionless agent venue we know: each venue classified, submitted to wherever we have a submitter for it, and each entry proven in the catalogue by reading it back, weekly for 90 days. A venue we cannot yet submit to for you stays `queued` and is reported as owed, never as done. The paying wallet owns the order, readable owner-signed at /listing/{id}. Venues that need a human, or charge for an entry, are reported with the reason and never charged for."
  },
  "extensions": {
    "outputSchema": {
      "input": {
        "type": "http",
        "method": "POST",
        "bodyType": "json",
        "bodyFields": {
          "id": {
            "type": "string",
            "required": false,
            "description": "the id of an order you already own, to extend it by another 90 days of rechecks. Exactly one of url or id."
          },
          "url": {
            "type": "string",
            "required": false,
            "description": "the absolute http(s) URL of YOUR service, at most 512 bytes -- the one a venue should list. Omit it to extend an order instead."
          }
        },
        "discoverable": false
      },
      "output": {
        "type": "json",
        "example": {
          "id": "1b4e28ba-2fa1-11d2-883f-0016d3cca427",
          "url": "https://your-service.example",
          "owner": "0x0000000000000000000000000000000000dEaD",
          "venues": [
            {
              "lane": "on-behalf",
              "name": "example-registry",
              "state": "queued",
              "venue": 2,
              "reason": null,
              "evidence": null,
              "checkedAt": null
            }
          ],
          "outcome": "created",
          "payment": {
            "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "payer": "0x0000000000000000000000000000000000dEaD",
            "amount": "250000",
            "network": "base",
            "transaction": "0x0000000000000000000000000000000000000000000000000000000000000000"
          },
          "expiresAt": "2027-01-08T00:00:00.000Z"
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 14 of 15

{
  "error": "X-PAYMENT header is required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xc8Fceb0F3611BE99c41586eA2B83F6A0911d2Ff0",
      "amount": "66700",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "HzUdRhSZMrSg5sbPCjToWFGCkSf2yfSE33m5NWaBC4rh"
      },
      "payTo": "GPbCdSaF5Qcfr5kdundH3etood2q5rafnRwdvVrs3Tan",
      "amount": "66700",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://agent-exec.448c.org/listings/promote",
    "mimeType": "application/json",
    "description": "POST /listings/promote -- Paid placement in the agent-exec directory: promoted listings outrank free ones while paid ($0.0667/day, $0.3333/week, $1/month) and demote once payment lapses. This entry buys day ($0.0667). Not a review -- payment doesn't verify or endorse a listing. No account needed; pay over x402."
  },
  "extensions": {
    "outputSchema": {
      "input": {
        "type": "http",
        "method": "POST",
        "bodyType": "json",
        "bodyFields": {
          "id": {
            "type": "string",
            "required": true,
            "description": "The directory listing id to promote. You must pay from the wallet that owns it."
          },
          "duration": {
            "enum": [
              "day",
              "week",
              "month"
            ],
            "type": "string",
            "required": true,
            "description": "One of: day, week, month."
          }
        },
        "discoverable": false
      },
      "output": {
        "type": "json",
        "example": {
          "listing": {
            "id": "example-listing",
            "tier": "paid",
            "paidUntil": 1700000000000
          },
          "payment": {
            "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "payer": "0x0000000000000000000000000000000000dEaD",
            "amount": "333300",
            "network": "base",
            "transaction": "0x0000000000000000000000000000000000000000000000000000000000000000"
          },
          "promotion": {
            "duration": "week",
            "priceUsd": 0.3333,
            "paidUntil": 1700000000000,
            "durationMs": 604800000
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 15 of 15

{
  "error": "X-PAYMENT header is required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xc8Fceb0F3611BE99c41586eA2B83F6A0911d2Ff0",
      "amount": "1000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "HzUdRhSZMrSg5sbPCjToWFGCkSf2yfSE33m5NWaBC4rh"
      },
      "payTo": "GPbCdSaF5Qcfr5kdundH3etood2q5rafnRwdvVrs3Tan",
      "amount": "1000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://agent-exec.448c.org/execute",
    "mimeType": "application/json",
    "description": "POST /execute -- Execute python3/node code in an isolated, network-less sandbox; returns stdout, stderr, exit code as JSON. No account needed -- pay per request over x402. Tier: default ($0.0010)."
  },
  "extensions": {
    "outputSchema": {
      "input": {
        "type": "http",
        "method": "POST",
        "bodyType": "json",
        "bodyFields": {
          "files": {
            "type": "object",
            "required": false,
            "description": "Extra files seeded alongside the entry file, as relative-path -> content."
          },
          "stdin": {
            "type": "string",
            "required": false,
            "description": "Written to the payload's stdin, then stdin is closed."
          },
          "limits": {
            "type": "object",
            "required": false,
            "description": "Per-request resource budget. Every field is optional; an omitted field takes its documented default."
          },
          "source": {
            "type": "string",
            "required": true,
            "description": "Program source, written to the runtime's entry file."
          },
          "runtime": {
            "enum": [
              "python3",
              "node"
            ],
            "type": "string",
            "required": true,
            "description": "Must be one of the allowlisted runtimes enumerated here -- the free way to learn the set. An unsupported value is refused only AFTER a payment attempt, as RUNTIME_UNSUPPORTED, not before."
          }
        },
        "discoverable": false
      },
      "output": {
        "type": "json",
        "example": {
          "error": null,
          "stderr": "",
          "stdout": "1\n",
          "outcome": "completed",
          "payment": {
            "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "payer": "0x0000000000000000000000000000000000dEaD",
            "amount": "1000",
            "network": "base",
            "transaction": "0x0000000000000000000000000000000000000000000000000000000000000000"
          },
          "receipt": {
            "tier": "default",
            "price": "$0.0010",
            "usage": {
              "outcome": "completed",
              "exitCode": 0,
              "truncated": {
                "stderr": false,
                "stdout": false
              },
              "durationMs": 42
            },
            "limits": {
              "timeoutMs": 5000,
              "workDirBytes": 67108864,
              "maxMemoryBytes": 2147483648,
              "maxOutputBytes": 1048576
            },
            "status": {
              "code": null,
              "billable": true,
              "category": "success"
            },
            "payment": {
              "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "payer": "0x0000000000000000000000000000000000dEaD",
              "amount": "1000",
              "network": "base",
              "reference": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "priceUsd": 0.001,
            "outputDigest": "0000000000000000000000000000000000000000000000000000000000000000",
            "requestDigest": "0000000000000000000000000000000000000000000000000000000000000000"
          },
          "exitCode": 0,
          "truncated": {
            "stderr": false,
            "stdout": false
          },
          "durationMs": 42
        }
      }
    }
  },
  "x402Version": 2
}

Can I trust it score from our own monitoring

score from our own monitoring

81/100 Solid

                           │         │   ·····│···
0                          55        75       93

                │     │  ··│··
0               55    75   93

#10 of 17 in Compute. Bands: strong 93+, solid 75+, mixed 55+, weak below 55.

Reliability: 99.9% uptime 30d
Compliance: A 14/14 checks pass
Price: $0.001 to $0.50 p20 in Compute
Risk: clean no risk flag
Traction: $0.00 30d 0 buyers
Last change: schema changed 37h ago 2 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 2026-10-14. Last up 2026-10-16.

── 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 degraded, 99.9% uptime 30d, 882ms 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 Compute, 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 17 listings, this one among them: the same 17 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.

Traction is a conservative undercount.

All measured facts

What it does

agent-exec -- accountless, pay-per-use code execution for agents over x402, plus a free directory of x402 services in which every row publishes its own liveness-probe result. Every row carries the outcome and timestamp of its own last liveness probe (lastProbeCode, lastSeenAlive, dead). We re-probe every listing on a 6-hour interval; a listing that fails 3 consecutive probes is marked dead, ranks below every live listing regardless of what its owner paid, and is eventually evicted -- after 6 hours if it never once answered a probe, 30 days otherwise (a listing under a live promotion keeps its place until that promotion lapses). We do not hide failures: we publish them per row. Pass ?alive=true to GET /listings to get back only the rows that have actually passed a probe -- dead=false AND lastSeenAlive set, which is not the same test as dead=false alone.

agent-exec is a listed x402 Compute API. Captured payment terms name Base, Solana. 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 2026-10-15 22:43:02 UTC. Latest service check observed at 2026-10-16 03:20:05 UTC. Service data JSON · Measurement methodology.

Page rendered at 2026-10-16 03:30:01 UTC. This response time is separate from the observation and computation times attached to each measurement.

Latest endpoint observation: 2026-10-16 03:20:05 UTC. Latest price capture: 2026-10-14 14:32:03 UTC. 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 2026-10-15 22:43:02 UTC. 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: 2026-09-17 to 2026-10-16 UTC. Daily monitoring and settlement rollups do not expose their computation time; a bucket date is not an update timestamp. 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 · Compute

uptime · latest daily rollup: 100%
uptime 7d: 100%
uptime 30d: 99.9%
uptime 90d: 99.9%
response p95: 882ms
avg response: 575ms
total checks: 2,771

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): $0.50
category percentile (min): p20 in Compute
category percentile (max): p83 in Compute
endpoints / prices: 15 / 12
model: tiered
stability: 100%

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: -
registrar: -
hosting: free host
domain created: ---

Identity facts, not a risk score.

assessment volume 30d: $0.00
exact assessment volume 30d (USD): 0
assessment recorded at (UTC): 2026-10-15T22:43:02.974Z
buyers 30d: 0
settlements 30d: 0
measured since: --- (start of our harvest window)
last settlement: ---
top buyer share: -
top 3 buyers share: -
concentrated volume: no
trend 7d vs 30d: -
networks: eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d
volume all-time: $0
settlements all-time: 0
median settlement 30d: -
max settlement 30d: -

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.

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: 2026-08-31

Recent checks

Latest 18 unpaid HTTP checks, newest first; response times in milliseconds, observation times in UTC
Checked at (UTC)	Status	HTTP	Response	Endpoints
2026-10-16 03:20:05 UTC	Online	402	330ms	14
2026-10-16 03:04:03 UTC	Online	402	225ms	14
2026-10-16 02:48:08 UTC	Online	402	191ms	14
2026-10-16 02:32:06 UTC	Online	402	132ms	14
2026-10-16 02:16:08 UTC	Online	402	198ms	14
2026-10-16 02:00:13 UTC	Online	402	169ms	14
2026-10-16 01:44:07 UTC	Online	402	121ms	14
2026-10-16 01:28:05 UTC	Online	402	67ms	14
2026-10-16 01:12:06 UTC	Online	402	101ms	14
2026-10-16 00:56:06 UTC	Online	402	175ms	14
2026-10-16 00:40:11 UTC	Online	402	274ms	14
2026-10-16 00:24:06 UTC	Online	402	146ms	14
2026-10-16 00:08:08 UTC	Online	402	251ms	14
2026-10-15 23:52:06 UTC	Online	402	183ms	14
2026-10-15 23:36:08 UTC	Online	402	313ms	14
2026-10-15 23:20:07 UTC	Online	402	220ms	14
2026-10-15 23:04:07 UTC	Online	402	246ms	14
2026-10-15 22:48:06 UTC	Online	402	150ms	14

Changes2 in 30d

Latest 2 recorded changes, up to 10 in the last 30 days; newest first; observation times in UTC
Observed at (UTC)	Change	Evidence
2026-10-14 14:48:06 UTC	schema changed	endpoint added `POST /attest` endpoint added `POST /check/address` endpoint added `POST /check/url` endpoint added `POST /claim` endpoint added `POST /deadman` endpoint added `POST /dns` endpoint added `POST /drift` endpoint added `POST /handoff` endpoint added `POST /inbox` endpoint added `POST /listing` endpoint added `POST /pay` endpoint added `POST /storage` endpoint added `POST /watch` schema added `POST /attest exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 300 {"name":"USD Coin","version":"2"}` schema added `POST /attest exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {}` schema added `POST /check/address exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 60 {"name":"USD Coin","version":"2"}` schema added `POST /check/address exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {}` schema added `POST /check/url exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 60 {"name":"USD Coin","version":"2"}` schema added `POST /check/url exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {}` schema added `POST /claim exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 300 {"name":"USD Coin","version":"2"}` schema added `POST /claim exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {}` schema added `POST /deadman exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 60 {"name":"USD Coin","version":"2"}` schema added `POST /deadman exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {}` schema added `POST /dns exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 60 {"name":"USD Coin","version":"2"}` schema added `POST /dns exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {}` schema added `POST /drift exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 300 {"name":"USD Coin","version":"2"}` schema added `POST /drift exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {}` schema added `POST /handoff exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 60 {"name":"USD Coin","version":"2"}` schema added `POST /handoff exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {}` schema added `POST /inbox exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 300 {"name":"USD Coin","version":"2"}` schema added `POST /inbox exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {}` schema added `POST /listing exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 60 {"name":"USD Coin","version":"2"}` schema added `POST /listing exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {}` schema added `POST /pay exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 300 {"name":"USD Coin","version":"2"}` schema added `POST /pay exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {}` schema added `POST /storage exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 300 {"name":"USD Coin","version":"2"}` schema added `POST /storage exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {}` schema added `POST /watch exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 60 {"name":"USD Coin","version":"2"}` schema added `POST /watch exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {}`
2026-09-19 19:39:03 UTC	schema changed	schema added `POST /execute exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {"feePayer":"HzUdRhSZMrSg5sbPCjToWFGCkSf2yfSE33m5NWaBC4rh"}` schema added `POST /listings/promote exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {"feePayer":"HzUdRhSZMrSg5sbPCjToWFGCkSf2yfSE33m5NWaBC4rh"}`

all changes

Over time

On-chain volume daily snapshots, USD 30d: $0.00

                                                                                                 
                                                                                                 
                                                                                                 
                                                                                                 
                                                                                                 
       ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  
    $0

volume no data in the payload

Distinct buyers per dayDistinct buyers per day

        ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·

Uptime 2 of 29 completed days below 100%

       ██ ██ ▇▇ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ▇▇ ██ ██ ██ ██ ██ ██ ██ ██

uptime below 100%, to scale

       09-17                                     10-01                                   10-16*

Volume 30d: $0.00
Uptime: 2 of 29 completed days below 100%

Daily on-chain settlement volume in US dollars, 2026-09-17 to 2026-10-16; 30 days have no data in the payload; distinct buyers per day

Day    Volume             USD  Buyers
09-17  · no data, 30 days to 10-16*

More charts

Response time daily average, ms min 171ms, avg 560ms, max 1632ms

       ▁▁ ▂▂ ▂▂ ▄▄ ▆▆ ██ ▄▄ ▂▂ ▃▃ ▃▃ ▃▃ ▃▃ ▃▃ ▃▃ ▃▃ ▃▃ ▃▃ ▃▃ ▁▁ ▂▂ ▂▂ ▂▂ ▃▃ ▃▃ ▃▃ ▃▃ ▃▃ ▂▂ ▁▁ ▁▁

09-17 to 10-16* UTC

      ▁▂▂▄▆█▄▂▃▃▃▃▃▃▃▃▃▃▁▂▂▂▃▃▃▃▃▂▁▁

      09-17         10-01     10-16*

Scores over time

x402 compliance low 14/14, high 14/14

       ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄

09-17 to 10-16* UTC

      ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄

      09-17         10-01     10-16*

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

       ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▃▃ ▃▃

09-17 to 10-16* UTC

      ▇▇▇▇▇▇▇▇▇▇▇▇▇▇▁▁▁▁▁▁▁▁▁▁▁▁▁▃▃

      09-17         10-01     10-16*

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

       ▇▇ ▇▇ ▇▇ ▇▇ ▁▁ ▁▁ ▁▁ ▁▁ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇

09-17 to 10-16* UTC

      ▇▇▇▇▁▁▁▁▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇

      09-17         10-01     10-16*

       09-17                                     10-01                                   10-16*

      09-17         10-01     10-16*

Scores: one day per column, 09-17 to 10-16*, 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. 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-exec/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, no volume data in the last 30d. 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: 2026-09-17 to 2026-10-16 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.

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 2026-10-15 22:43:02 UTC. Each UTC day uses its last recorded run; missing readings stay unmeasured. Assessment history JSON · Measurement methodology.

Daily values, 2026-09-17 to 2026-10-16: 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
Day	Volume	Buyers	Settlements	Uptime	Response	Compliance	Price percentile	Site signals
2026-09-17	no data	no data	no data	100%	270.71ms	14/14	p22	6/6
2026-09-18	no data	no data	no data	100%	347.98ms	14/14	p22	6/6
2026-09-19	no data	no data	no data	98.89%	337.55ms	14/14	p22	6/6
2026-09-20	no data	no data	no data	100%	817.50ms	14/14	p22	6/6
2026-09-21	no data	no data	no data	100%	1275.47ms	14/14	p22	1/6
2026-09-22	no data	no data	no data	100%	1631.52ms	14/14	p22	1/6
2026-09-23	no data	no data	no data	100%	795.37ms	14/14	p22	1/6
2026-09-24	no data	no data	no data	100%	506.03ms	14/14	p22	1/6
2026-09-25	no data	no data	no data	100%	533.17ms	14/14	p22	6/6
2026-09-26	no data	no data	no data	100%	546.79ms	14/14	p22	6/6
2026-09-27	no data	no data	no data	100%	578.58ms	14/14	p22	6/6
2026-09-28	no data	no data	no data	100%	664.48ms	14/14	p22	6/6
2026-09-29	no data	no data	no data	100%	576.70ms	14/14	p22	6/6
2026-09-30	no data	no data	no data	100%	609.10ms	14/14	p22	6/6
2026-10-01	no data	no data	no data	100%	579.73ms	14/14	p19	6/6
2026-10-02	no data	no data	no data	100%	618.40ms	14/14	p19	6/6
2026-10-03	no data	no data	no data	100%	524.81ms	14/14	p19	6/6
2026-10-04	no data	no data	no data	100%	526.08ms	14/14	p19	6/6
2026-10-05	no data	no data	no data	100%	239.69ms	14/14	p19	6/6
2026-10-06	no data	no data	no data	100%	457.11ms	14/14	p19	6/6
2026-10-07	no data	no data	no data	100%	395.87ms	14/14	p19	6/6
2026-10-08	no data	no data	no data	98.89%	341.48ms	14/14	p19	6/6
2026-10-09	no data	no data	no data	100%	533.44ms	14/14	p19	6/6
2026-10-10	no data	no data	no data	100%	548.34ms	14/14	p19	6/6
2026-10-11	no data	no data	no data	100%	581.53ms	14/14	p19	6/6
2026-10-12	no data	no data	no data	100%	654.12ms	14/14	p19	6/6
2026-10-13	no data	no data	no data	100%	533.17ms	14/14	p19	6/6
2026-10-14	no data	no data	no data	100%	388.99ms	14/14	p20	6/6
2026-10-15	no data	no data	no data	100%	203.39ms	14/14	p20	6/6
2026-10-16*	no data	no data	no data	100%	170.83ms	no data	no data	no data

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5 of 16 other ranked services in Compute, ordered by the same measured score.

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