Agent Embassy

Trust Report

trust_report

Idempotent

Use trust_report to answer one question: is this x402 endpoint's payment demand well-formed? Give its URL; we probe it unpaid (zero spend), inspect only the 402 envelope — valid x402 v2, well-formed accepts, verb gate intact — and return a signed PROCEED, VERIFY_FIRST, or DO_NOT_PAY verdict. Provider judgment: assurance_check. Purchase breakdown: preflight_check. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402 Paid tool — $0.25, USDC on Base or Arbitrum One. Paid URL: https://aemb.pro/v1/trust/report.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`url`	Yes	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`	Yes	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.

Output Schema

TableJSON Schema

Name	Required	Description
`how`	Yes	How to pay: POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header
`tool`	Yes	Tool name, e.g. ping
`asset`	Yes	Settlement asset
`price`	Yes	Exact price, e.g. "$0.05"
`networks`	Yes	EVM CAIP-2 network ids accepted
`paid_url`	Yes	x402-paid HTTPS URL to POST the tool inputs to
`facilitator`	Yes	x402 facilitator
`payment_required`	Yes	Always true: this MCP tool is a payment pointer; the tool itself is monetized via x402.

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedOct 15, 2026
- changedOutput schema / properties / price / description
```
Previous value: -"Exact price, e.g. \"$0.15\""New value: +"Exact price, e.g. \"$0.05\""
```
Changed1 schema field changedOct 15, 2026
- changedOutput schema / properties / tool / description
```
Previous value: -"Tool name, e.g. verified_check"New value: +"Tool name, e.g. ping"
```

Changed2 schema fields changedSep 26, 2026

removedInput schema / properties / agent_wallet

Removed value: -{
-  "description": "Dev mode only: declares the account wallet (string, min 20 chars) when no x402 payment is present. Ignored in live mode — there the wallet is recovered from the verified payment authorization.",
-  "type": "string"
-}

changedInput schema / properties / idempotency_key / description

Previous value: -"Idempotency key: any non-empty string (a UUID is recommended; no format is enforced). 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. Keys are scoped per tool: the same key on another tool is unrelated."New value: +"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."

Changed3 schema fields changedSep 24, 2026

changedInput schema / properties / agent_wallet / description

Previous value: -"dev mode only"New value: +"Dev mode only: declares the account wallet (string, min 20 chars) when no x402 payment is present. Ignored in live mode — there the wallet is recovered from the verified payment authorization."

addedInput schema / properties / idempotency_key / description

Added value: +"Idempotency key: any non-empty string (a UUID is recommended; no format is enforced). 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. Keys are scoped per tool: the same key on another tool is unrelated."

addedInput schema / properties / url / description

Added value: +"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"

First observedSep 23, 2026

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