Agent Embassy
payment-ready until 2026-10-17
Agent Embassy lets AI agents pay for work and prove what happened. verified_check ($0.15): we load your HTTPS URL once, server-side, check it against your conditions (HTTP status, body substring, JSON field value), and return a signed Outcome Receipt with the full transcript · final URL, timing, body SHA-256, per-condition pass/fail · verifiable by anyone. register_recovery ($1.00): store a client-encrypted recovery blob, queued for human review within 24h.
Call it x402 v2
x402 v2
- Base URL
- https://agent-embassy.fly.dev
- Payment
- x402 v2, header channel
$ curl -i 'https://agent-embassy.fly.dev/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 agent-embassy.fly.dev
POST/v1/agent-id/issue Arbitrum One+Base $0.25since 10-04
POST/v1/agent-id/renew Arbitrum One+Base $0.25since 10-04
POST/v1/agent-id/revoke Arbitrum One+Base $0.25since 10-04
POST/v1/agent-id/verify Arbitrum One+Base $0.25since 10-04
POST/v1/assurance/check Arbitrum One+Base $0.25since 10-04
POST/v1/cert Arbitrum One+Base $0.25since 10-04
POST/v1/check/prove Arbitrum One+Base $0.25since 10-04
POST/v1/check/proveit-verified Arbitrum 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
| Method | Path | Description | Price | Network | Asset | 402 channel | Captured |
|---|---|---|---|---|---|---|---|
| POST | / | No description | $0.25 | Arbitrum One+ | USDC, USD Coin | header | since 10-04 |
| POST | / | No description | $0.25 | Arbitrum One+ | USDC, USD Coin | header | since 10-04 |
| POST | / | No description | $0.25 | Arbitrum One+ | USDC, USD Coin | body | since 10-04 |
| POST | / | No description | $0.25 | Arbitrum One+ | USDC, USD Coin | header | since 10-04 |
| POST | / | No description | $0.25 | Arbitrum One+ | USDC, USD Coin | header | since 10-04 |
| POST | / | No description | $0.25 | Arbitrum One+ | USDC, USD Coin | header | since 10-04 |
| POST | / | No description | $0.25 | Arbitrum One+ | USDC, USD Coin | header | since 10-04 |
| POST | / | No description | $0.25 | Arbitrum One+ | USDC, USD Coin | header | since 10-04 |
| POST | / | No description | $0.15 | Arbitrum One+ | USDC, USD Coin | header | since 09-23 |
| POST | / | No description | $25.00 | Arbitrum One+ | USDC, USD Coin | header | since 10-04 |
| POST | / | No description | $0.25 | Arbitrum One+ | USDC, USD Coin | header | since 10-04 |
| POST | / | No description | $0.25 | Arbitrum One+ | USDC, USD Coin | header | since 10-04 |
| GET | / | No description | $0.25 | Arbitrum One+ | USDC, USD Coin | header | since 10-04 |
| POST | / | No description | $0.25 | Arbitrum One+ | USDC, USD Coin | header | since 10-04 |
| POST | / | No description | $1.00 | Arbitrum One+ | USDC, USD Coin | header | since 09-23 |
| POST | / | No description | $222.00 | Arbitrum One+ | USDC, USD Coin | header | since 10-04 |
| POST | / | No description | $0.25 | Arbitrum One+ | USDC, USD Coin | header | since 10-04 |
Payment evidence
402 payload captured at . Check evidence JSON · Measurement methodology.
First of 17 payloads captured by the monitor.
193 lines, scroll inside
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
"amount": "150000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
"amount": "150000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://agent-embassy.fly.dev/v1/check/verify",
"tags": [
"agent commerce"
],
"iconUrl": "https://aemb.pro/favicon.png",
"mimeType": "",
"description": "Use ping when you need a pass/fail verdict that a URL serves expected content: expected HTTP status (default 200), a required body substring, and/or an exact match on one JSON field. One automated fetch at request time, signed receipt with per-condition results. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402",
"serviceName": "Agent Embassy"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"url": "https://example.com",
"expect_status": 200,
"idempotency_key": "880e8400-e29b-41d4-a716-446655440003",
"expect_body_contains": "Example Domain"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"tool": "ping",
"chain": [
"request",
"authorization",
"action",
"proof",
"liability_boundary"
],
"status": "complete",
"account": "0x1111111111111111111111111111111111111111",
"verdict": "pass",
"receipt_id": "emb_jkl012",
"receipt_version": "embassy-receipt/2"
}
}
},
"schema": {
"type": "object",
"$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"
},
"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: UUID v4, client-generated, one per logical request. 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"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"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/recovery/register",
"mimeType": "application/json",
"description": "Use register_recovery when you want to escrow a client-encrypted recovery blob with the Embassy: it is stored opaquely (the Embassy cannot decrypt it), queued for human operator review, and you get a signed receipt proving the stored blob's hash. 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": "550e8400-e29b-41d4-a716-446655440000"
},
"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",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"contact_name",
"quorum_rules",
"recovery_blob",
"idempotency_key"
],
"properties": {
"contact_name": {
"type": "string",
"description": "Your name or operator handle, recorded with the escrow"
},
"quorum_rules": {
"type": "string",
"description": "The release rules for this blob, e.g. '2-of-3 named trustees must approve release'"
},
"recovery_blob": {
"type": "string",
"description": "Client-encrypted blob (ENC:v1:base64...). Stored opaquely; only its SHA-256 and byte count enter the signed receipt"
},
"contact_handle": {
"type": "string",
"description": "Optional contact (email or handle) for the operator review"
},
"idempotency_key": {
"type": "string",
"description": "Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
},
"manifestUrl": "https://aemb.pro/.well-known/x402.json"
},
"builder-code": {
"info": {
"a": "bc_b8fwf0kk"
},
"schema": {
"type": "object",
"$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}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
},
"x402Version": 2
}Captured payload 3 of 17
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
"amount": "250000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
"amount": "250000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://aemb.pro/v1/check/prove",
"mimeType": "application/json",
"description": "Use prove_it when you want signed cryptographic proof that a URL is live and returning HTTP 200: one automated fetch at request time, sealed into a signed Outcome Receipt with the full check transcript. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402",
"serviceName": "Agent Embassy"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"url": "https://example.com",
"idempotency_key": "880e8400-e29b-41d4-a716-446655440009"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"tool": "prove_it",
"chain": [
"request",
"authorization",
"action",
"proof",
"liability_boundary"
],
"status": "complete",
"account": "0x1111111111111111111111111111111111111111",
"verdict": "pass",
"receipt_id": "emb_stu901",
"receipt_version": "embassy-receipt/2"
}
}
},
"schema": {
"type": "object",
"$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"
},
"idempotency_key": {
"type": "string",
"description": "Idempotency key: UUID v4, client-generated, one per logical request. 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 4 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": "Use proveit_verified_check when you need a signed receipt that a compute-price check actually ran: one live GPU spot market snapshot (13 classes, cheapest rentable ask per class in USD/hour; one class when gpu is named), sealed into a signed Outcome Receipt. $0.25 per check. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402",
"serviceName": "Agent Embassy"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"gpu": "H100 SXM",
"type": "ondemand",
"idempotency_key": "880e8400-e29b-41d4-a716-446655440010"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"tool": "proveit_verified_check",
"chain": [
"request",
"authorization",
"action",
"proof",
"liability_boundary"
],
"status": "complete",
"account": "0x1111111111111111111111111111111111111111",
"verdict": "pass",
"receipt_id": "emb_tuv234",
"receipt_version": "embassy-receipt/2"
}
}
},
"schema": {
"type": "object",
"$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 all 13 classes"
},
"type": {
"type": "string",
"description": "Offer type: ondemand, bid, or reserved. Defaults to ondemand"
},
"idempotency_key": {
"type": "string",
"description": "Idempotency key: UUID v4, client-generated, one per logical request. 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/trust/report",
"mimeType": "application/json",
"description": "Use trust_report when you need a buy/don't-buy decision on a candidate x402 endpoint: the Embassy probes it unpaid (no payment header, zero spend) and returns a signed PROCEED, VERIFY_FIRST, or DO_NOT_PAY verdict — a decision, never a score. 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": "880e8400-e29b-41d4-a716-446655440005"
},
"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",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"url",
"idempotency_key"
],
"properties": {
"url": {
"type": "string",
"description": "HTTPS URL of the candidate x402 endpoint to probe (max 2000 chars; no credentials in URL). Probed unpaid via GET, falling back to an empty-body POST when GET returns 404/405"
},
"idempotency_key": {
"type": "string",
"description": "Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
},
"manifestUrl": "https://aemb.pro/.well-known/x402.json"
},
"builder-code": {
"info": {
"a": "bc_b8fwf0kk"
},
"schema": {
"type": "object",
"$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/preflight/check",
"mimeType": "application/json",
"description": "Use preflight_check before your agent spends on a paid tool or endpoint: the Embassy answers WHO is paid, WHAT is delivered, what CHANGED, the full COST, and WHO TAKES A CUT — then returns a signed PROCEED, PROCEED_WITH_CAUTION, BLOCKED, or UNKNOWN verdict with the full proof envelope. 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": "880e8400-e29b-41d4-a716-446655440007"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"tool": "preflight_check",
"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"
},
"idempotency_key": {
"type": "string",
"description": "Idempotency key: UUID v4, client-generated, one per logical request. 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": "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": "Use compute_history when you need GPU compute market history: a bounded time series of per-GPU cheapest/median/offer counts — or whole-market history when no GPU is named — sealed into your signed receipt. Prices are ephemeral asks, never delivered-cost guarantees. 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": "880e8400-e29b-41d4-a716-446655440004"
},
"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",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"idempotency_key"
],
"properties": {
"gpu": {
"type": "string",
"description": "Optional GPU filter, e.g. 'H100 SXM' (max 64 chars). Omit for whole-market history"
},
"limit": {
"type": "number",
"description": "Max history points to return; integer 1-200. Defaults to 50"
},
"idempotency_key": {
"type": "string",
"description": "Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
},
"manifestUrl": "https://aemb.pro/.well-known/x402.json"
},
"builder-code": {
"info": {
"a": "bc_b8fwf0kk"
},
"schema": {
"type": "object",
"$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}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
},
"x402Version": 2
}Captured payload 8 of 17
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
"amount": "250000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
"amount": "250000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://aemb.pro/v1/markets/compute/alerts",
"mimeType": "application/json",
"description": "Use compute_alerts when you want to know when GPU spot prices made a significant move: returns the current price-move alert list, sealed into your signed receipt. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402",
"serviceName": "Agent Embassy"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"gpu": "H100 SXM",
"limit": 25,
"idempotency_key": "990e8400-e29b-41d4-a716-446655440005"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"tool": "compute_alerts",
"chain": [
"request",
"authorization",
"action",
"proof",
"liability_boundary"
],
"status": "complete",
"account": "0x1111111111111111111111111111111111111111",
"receipt_id": "emb_pqr678",
"receipt_version": "embassy-receipt/2"
}
}
},
"schema": {
"type": "object",
"$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"
},
"idempotency_key": {
"type": "string",
"description": "Idempotency key: UUID v4, client-generated, one per logical request. 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://agent-embassy.fly.dev/v1/markets/compute/spot",
"tags": [
"gpu spot prices",
"compute market"
],
"iconUrl": "https://aemb.pro/favicon.png",
"mimeType": "",
"description": "Compute market snapshot — live spot prices: cheapest rentable ask per class in USD/hour. $0.25 per query via x402 USDC on Base or Arbitrum One. Upstream sources are internal and never named. Asks are ephemeral — re-observe before any decision.",
"serviceName": "Agent Embassy"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {}
},
"output": {
"type": "json",
"example": {
"note": "prices are ephemeral asks, not delivered-cost guarantees",
"observed_at": "2026-09-21T00:00:00Z",
"cheapest_ask_usd_per_gpu_hour": {
"h100_sxm": 1.79,
"rtx_4090": 0.14
}
}
}
},
"schema": {
"type": "object",
"$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
}Captured payload 10 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": "Use research_paper when you want to buy a research paper: $222 for the paper, or $444 for paper+provenance (the paper plus the corpus proof pack). Licensed to your wallet — the purchased bytes are delivered privately with a signed receipt. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402",
"serviceName": "Agent Embassy"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"bundle": "paper+provenance",
"paper_id": "the-discontinuity-20260922",
"idempotency_key": "880e8400-e29b-41d4-a716-446655440009"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"tool": "research_paper",
"bytes": 24013,
"chain": [
"request",
"authorization",
"action",
"proof",
"liability_boundary"
],
"bundle": "paper+provenance",
"status": "complete",
"account": "0x1111111111111111111111111111111111111111",
"paper_id": "the-discontinuity-20260922",
"receipt_id": "emb_pqr678",
"receipt_version": "embassy-receipt/2"
}
}
},
"schema": {
"type": "object",
"$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) or 'paper+provenance' ($444, 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"
},
"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: UUID v4, client-generated, one per logical request. 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 paper tier, owned by the paying wallet. When valid, buying paper+provenance costs the $222 upgrade delta instead of $444. The prior receipt's signature is verified and must belong to the payer; invalid ids are rejected with 400 before settlement. Quoted provisionally at 402 time; ownership proven at run time."
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
},
"manifestUrl": "https://aemb.pro/.well-known/x402.json"
},
"builder-code": {
"info": {
"a": "bc_b8fwf0kk"
},
"schema": {
"type": "object",
"$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
}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/assurance/check",
"mimeType": "application/json",
"description": "Use assurance_check when you need a go/no-go verdict BEFORE an agent acts on a provider: the Embassy probes the provider unpaid (no payment header, zero spend) and returns a signed ALLOW, ALLOW_WITH_RESTRICTIONS, ASK_HUMAN, REVERIFY, REROUTE, or QUARANTINE decision. UNVERIFIED is the honest default for unknowns — never a smear, never a badge. 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": "880e8400-e29b-41d4-a716-446655440006",
"provider_endpoint": "https://example.com/v1/paid/thing",
"permissions_requested": [
"spend"
]
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"tool": "assurance_check",
"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)"
},
"amount_usdc": {
"type": "string",
"description": "Amount at stake, as a positive decimal string, e.g. '0.25'"
},
"idempotency_key": {
"type": "string",
"description": "Idempotency key: UUID v4, client-generated, one per logical request. 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 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/agent-id/issue",
"mimeType": "application/json",
"description": "Use agentid_issue when you want to issue an Agent ID: a signed identity attestation binding an agent's public key to a verified accountable principal, with operator details and an expiry. Issuance is refused when the principal cannot be verified — that refusal is what makes the ID worth anything. 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": "880e8400-e29b-41d4-a716-446655440010",
"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": {
"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: UUID v4, client-generated, one per logical request. 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}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
},
"x402Version": 2
}Captured payload 13 of 17
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
"amount": "250000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
"amount": "250000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://aemb.pro/v1/agent-id/verify",
"mimeType": "application/json",
"description": "Use agentid_verify when you want to check an Agent ID's current standing: valid, revoked, expired, or unknown. Every status returns the identical response shape — the Agent ID, expiry, the full identity chain, an inclusion record, and the signed attestation envelope. Unknown IDs report unknown; never an error. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402",
"serviceName": "Agent Embassy"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"agent_id": "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef",
"idempotency_key": "880e8400-e29b-41d4-a716-446655440011"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"tool": "agentid_verify",
"chain": [
"request",
"authorization",
"action",
"proof",
"liability_boundary"
],
"status": "valid",
"account": "0x1111111111111111111111111111111111111111",
"agent_id": "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef",
"receipt_id": "emb_1a2b3c4d5e6f7890abcdef12",
"receipt_version": "embassy-receipt/2"
}
}
},
"schema": {
"type": "object",
"$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"
},
"idempotency_key": {
"type": "string",
"description": "Idempotency key: UUID v4, client-generated, one per logical request. 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
{
"how": "POST the tool inputs as JSON to https://aemb.pro/v1/agent-id/revoke with an x402 v2 PAYMENT-SIGNATURE header authorizing exactly $0.25 USDC, and include \"quote_id\": \"q_be5e7dcbb25d460e88ca30c2\" in the JSON body. See https://docs.cdp.coinbase.com/x402",
"tool": "agentid_revoke",
"quote": {
"tool": "agentid_revoke",
"asset": "USDC",
"signer": "0x0c3704A744A594175e1A31F1B1e4AeEc5a96289F",
"networks": [
"eip155:8453",
"eip155:42161"
],
"quote_id": "q_be5e7dcbb25d460e88ca30c2",
"quoted_at": "2026-10-04T22:38:07.536Z",
"signature": "0xf72a5a599680b801d54abe07c5f77c7ca7d798eac07083d83d6322066158eb316f591a8f34f24e1fc062117be779a2a452e99f0da56576ec7bc7f99ae49b990a1c",
"amount_usd": "$0.25",
"expires_at": "2026-10-04T22:48:07.536Z"
},
"verify": "quote signature: sha256(canonical_quote_json, sorted keys) -> ecrecover -> compare to signer; signer published at /.well-known/embassy-signer.json",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
"amount": "250000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
"amount": "250000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 300
}
],
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"reason": "Operator requested retirement of this Agent ID.",
"agent_id": "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef",
"idempotency_key": "880e8400-e29b-41d4-a716-446655440012",
"revocation_signature": "0xababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababab"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"tool": "agentid_revoke",
"chain": [
"request",
"authorization",
"action",
"proof",
"liability_boundary"
],
"status": "complete",
"account": "0x1111111111111111111111111111111111111111",
"agent_id": "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef",
"receipt_id": "emb_2b3c4d5e6f7890abcdef1234",
"receipt_version": "embassy-receipt/2"
}
}
},
"schema": {
"type": "object",
"$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"
},
"idempotency_key": {
"type": "string",
"description": "Optional idempotency key: UUID v4 (client-generated; 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,
"paymentMethod": "exact",
"payment_required": true
}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/agent-id/renew",
"mimeType": "application/json",
"description": "Use agentid_renew to renew an Agent ID: a fresh Agent ID, same identity chain, new expiry; old one retired. revocation_signature over agent-id-revoke:<OLD_agent_id> (64-char lowercase ID) — same contract as retiring: EIP-191 personal_sign (envelope required; raw ECDSA fails), 0x 65-byte hex; or ed25519 nacl.sign.detached, 64-byte hex. Signer: principal or Embassy-for-cause. 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": "880e8400-e29b-41d4-a716-446655440013",
"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"
},
"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: UUID v4 (client-generated; 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 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/cert",
"mimeType": "application/json",
"description": "Document Cert — proof your document existed at a point in time. $0.25. We timestamp your document's SHA256 hash with a signed attestation. You keep the document; we never see it.",
"serviceName": "Agent Embassy"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"document_hash": "2a643300cf8bb1fb12193c29ee949db7e9f811d8b99733382c0f7ca15322de8e",
"document_name": "contract.txt",
"idempotency_key": "660e8400-e29b-41d4-a716-446655440002"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"tool": "cert",
"chain": [
"request",
"authorization",
"action",
"proof",
"liability_boundary"
],
"status": "certified",
"account": "0x1111111111111111111111111111111111111111",
"receipt_id": "emb_9f8e7d6c5b4a",
"receipt_version": "embassy-receipt/2"
}
}
},
"schema": {
"type": "object",
"$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": {
"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: UUID v4, client-generated, one per logical request. 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 17 of 17
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
"amount": "25000000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xD004278bC57FE4B9F743ABf17d713ed4169A88E9",
"amount": "25000000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://aemb.pro/v1/copy/correct",
"mimeType": "application/json",
"description": "Use correct_copy when you want a $25 correction pass over draft copy: transforms the text into your chosen voice register, normalizes formatting, verifies every link is alive, confirms your required terms appear, and scans for black-box leaks — then returns the corrected copy with a verification report and a signed receipt. You pay for the pass, never the method. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402",
"serviceName": "Agent Embassy"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"draft": "hi!! it's us — Agent Embassy (https://aemb.pro).",
"links": [
"https://aemb.pro"
],
"register": "bright",
"required_terms": [
"pro.aemb"
],
"idempotency_key": "880e8400-e29b-41d4-a716-446655440099"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"tool": "correct_copy",
"chain": [
"request",
"authorization",
"action",
"proof",
"liability_boundary"
],
"status": "complete",
"account": "0x1111111111111111111111111111111111111111",
"verdict": "clean",
"receipt_id": "emb_xyz789",
"receipt_version": "embassy-receipt/2"
}
}
},
"schema": {
"type": "object",
"$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)"
},
"register": {
"type": "string",
"description": "Voice register: founder-notes, elite, force, or bright"
},
"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: UUID v4, client-generated, one per logical request. 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
}Can I trust it score from our own monitoring
score from our own monitoring
81/100 Solid
#79 of 117 in Verification. Bands: strong 93+, solid 75+, mixed 55+, weak below 55.
- Reliability
- 99.9% uptime since 09-23
- Compliance
- A 13/14 checks pass, failing: x402 v2 envelope delivered in the payment-required header
- Price
- $0.15 to $222.00 p91 in Verification
- Risk
- clean no risk flag
- Traction
- $5.65 30d 4 buyers, top buyer 58% (address, not entity)
- Last change
- schema changed 6d ago 5 in 30d
13/14 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 2026-10-04. Last up 2026-10-10.
── 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, 99.9% uptime 30d, 500ms response p95, x402 compliance 13 of 14, $0.15 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 117 listings, this one among them: the same 117 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 ($5.65, 29 tx). Traction is a conservative undercount; first settlement seen 2026-09-21.
All measured facts
What it does
Agent Embassy lets AI agents pay for work and prove what happened. verified_check ($0.15): we load your HTTPS URL once, server-side, check it against your conditions (HTTP status, body substring, JSON field value), and return a signed Outcome Receipt with the full transcript · final URL, timing, body SHA-256, per-condition pass/fail · verifiable by anyone. register_recovery ($1.00): store a client-encrypted recovery blob, queued for human review within 24h. Plus ($0.25 standard): signed URL-liveness proofs (prove_it, proveit_verified_check), Lightning Cert seals proving one document existed, trust reports, preflight spend checks, GPU compute history/alerts/spot prices, agent ID issue/verify/revoke/renew, and assurance checks. Research papers ($222) and copy-correction passes ($25). USDC on Base and Arbitrum via x402.
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: 2026-09-11 to 2026-10-10 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
- 99.9%
- uptime 90d
- 99.9%
- response p95
- 500ms
- avg response
- 572ms
- total checks
- 1,549
Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.
- price (min)
- $0.15
- price (max)
- $222.00
- category percentile (min)
- p91 in Verification
- category percentile (max)
- p98 in Verification
- endpoints / prices
- 17 / 5
- model
- tiered
- stability
- 43%
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
- $5.65
- exact assessment volume 30d (USD)
- 5.65
- assessment recorded at (UTC)
- 2026-10-10T14:53:00.852Z
- buyers 30d
- 4
- settlements 30d
- 29
- measured since
- 2026-09-21 (start of our harvest window)
- last settlement
- 2026-10-08
- top buyer share
- 58% of 30d volume (address, not entity)
- top 3 buyers share
- -
- concentrated volume
- no
- trend 7d vs 30d
- 1.06x the 30d daily rate
- networks
- eip155:8453
- volume all-time
- $5.65
- settlements all-time
- 29
- median settlement 30d
- $0.15
- max settlement 30d
- $0.25
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
- 2026-09-23
Recent checks
| Checked at (UTC) | Status | HTTP | Response | Endpoints |
|---|---|---|---|---|
| Online | 402 | 289ms | 17 | |
| Online | 402 | 205ms | 17 | |
| Online | 402 | 419ms | 17 | |
| Online | 402 | 191ms | 17 | |
| Online | 402 | 421ms | 17 | |
| Online | 402 | 360ms | 17 | |
| Online | 402 | 154ms | 17 | |
| Online | 402 | 232ms | 17 | |
| Online | 402 | 412ms | 17 | |
| Online | 402 | 187ms | 17 | |
| Online | 402 | 422ms | 17 | |
| Online | 402 | 307ms | 17 | |
| Online | 402 | 223ms | 17 | |
| Online | 402 | 207ms | 17 | |
| Online | 402 | 170ms | 17 | |
| Online | 402 | 314ms | 17 | |
| Online | 402 | 325ms | 17 | |
| Online | 402 | 359ms | 17 |
Changes5 in 30d
| Observed at (UTC) | Change | Evidence |
|---|---|---|
| schema changed | endpoint added endpoint added endpoint added endpoint added endpoint added endpoint added endpoint added endpoint added endpoint added endpoint added endpoint added endpoint added endpoint added endpoint added endpoint added schema added schema added schema added schema added schema added schema added schema added schema added schema added schema added schema added schema added schema added schema added schema added schema added schema added schema added schema added schema added schema added schema added schema added schema added schema added schema added schema added schema added schema added schema added | |
| schema changed | schema removed schema removed schema removed schema removed schema added schema added schema added schema added | |
| price changed |
| |
| schema changed | schema removed schema removed schema removed schema removed schema added schema added schema added schema added | |
| schema changed | schema removed schema removed schema removed schema removed schema added schema added schema added schema added |
Amounts are on-wire atomic units in the named asset.
Over time
On-chain volume daily snapshots, USD 30d: $5.65, peak $1.15 on 10-04
volume no data in the payload
Distinct buyers per dayDistinct buyers per day
Uptime 1 of 19 completed days below 100%
uptime below 100%, to scale
- Volume 30d
- $5.65
- Uptime
- 1 of 19 completed days below 100%
More charts
Response time daily average, ms min 258ms, avg 561ms, max 869ms
09-11 to 10-10* UTC
Scores over time
x402 compliance low 9/11, high 14/14
09-11 to 10-10* UTC
Price percentile in Verification own low to high; exact values below
09-11 to 10-10* UTC
Site signals present (of 6) own low to high; exact values below
09-11 to 10-10* UTC
Scores: one day per column, 09-11 to 10-10*, 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, /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: $5.65, peak $1.15 on 10-04. 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: 2026-09-11 to 2026-10-10 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 . Each UTC day uses its last recorded run; missing readings stay unmeasured. Assessment history JSON · Measurement methodology.
| Day | Volume | Buyers | Settlements | Uptime | Response | Compliance | Price percentile | Site signals |
|---|---|---|---|---|---|---|---|---|
| 2026-09-21 | $0.30 | 1 | 2 | no data | no data | no data | no data | no data |
| 2026-09-22 | $0.85 | 2 | 5 | no data | no data | no data | no data | no data |
| 2026-09-23 | no data | no data | no data | 100% | 377.74ms | 14/14 | p90 | 4/6 |
| 2026-09-24 | $0.15 | 1 | 1 | 100% | 654.00ms | 14/14 | p90 | 4/6 |
| 2026-09-25 | $0.25 | 1 | 1 | 100% | 579.00ms | 14/14 | p90 | 4/6 |
| 2026-09-26 | $1.10 | 3 | 6 | 100% | 737.58ms | 9/11 | p1 | 4/6 |
| 2026-09-27 | $0.30 | 1 | 2 | 100% | 700.01ms | 13/14 | p90 | 4/6 |
| 2026-09-28 | no data | no data | no data | 100% | 869.14ms | 13/14 | p90 | 4/6 |
| 2026-09-29 | $0.25 | 1 | 1 | 100% | 625.19ms | 13/14 | p89 | 4/6 |
| 2026-09-30 | $0.25 | 1 | 1 | 100% | 749.43ms | 13/14 | p89 | 4/6 |
| 2026-10-01 | $0.65 | 1 | 3 | 100% | 659.02ms | 13/14 | p89 | 4/6 |
| 2026-10-02 | no data | no data | no data | 100% | 701.61ms | 13/14 | p89 | 4/6 |
| 2026-10-03 | $0.15 | 1 | 1 | 100% | 655.80ms | 14/14 | p89 | 4/6 |
| 2026-10-04 | $1.15 | 1 | 5 | 100% | 659.83ms | 13/14 | p91 | 4/6 |
| 2026-10-05 | no data | no data | no data | 100% | 351.63ms | 13/14 | p91 | 4/6 |
| 2026-10-06 | no data | no data | no data | 100% | 548.49ms | 13/14 | p91 | 4/6 |
| 2026-10-07 | no data | no data | no data | 98.89% | 392.53ms | 13/14 | p91 | 4/6 |
| 2026-10-08 | $0.25 | 1 | 1 | 100% | 285.16ms | 13/14 | p91 | 4/6 |
| 2026-10-09 | no data | no data | no data | 100% | 288.80ms | 13/14 | p91 | 4/6 |
| 2026-10-10* | no data | no data | no data | 100% | 258.08ms | 13/14 | p91 | 4/6 |
Alternatives in Verification
5 of 116 other ranked services in Verification, ordered by the same measured score.
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HTML
<a href="https://x402-list.com/services/ agent-embassy? utm_source=badge& utm_medium=referral& utm_campaign=embed"> <img src="https://x402-list.com/ badge/ agent-embassy.svg" alt="Agent Embassy listed on x402-list" height="28"> </a>
Markdown
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HTML, live uptime variant
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Delisting
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