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KYA Brasil – Verified Agent Credential Retrieval (Signed)
x402
KYA Brasil – Verified Agent Credential Retrieval (Signed) is a paid API for AI agents from kya-br-agents.marcelfons.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-27).
Retrieves a signed, timestamped verification receipt confirming a Brazilian AI agent's KYC/compliance status, with no daily rate limit.
Price / call$0.01
Success—
StatusUnknown
How this service works
Same as the free verification, without daily limit, plus a signed receipt of the verification itself (what was checked, when). Pay per call with x402.
Output
A signed verification receipt documenting which fields were checked (e.g. CNPJ, agent key, company), the timestamp of the verification, and the current verified status of the agent — returned as a cryptographically signed object that can be stored as an audit artifact.
Example use cases
Audit trail for compliance reporting
“Pull the signed, timestamped verification receipt for Brazilian agent credential 'agnt_xyz789' — I need an auditable record showing exactly what was checked and when for our compliance report.”
Confirm agent validity before high-value transaction
“Before we proceed with this payment, get me the signed KYA Brasil verification for agent ID 'agnt_987def' so I can confirm it's still valid and have a receipt on file.”
Automated daily credential health check
“Every morning, retrieve the signed verification receipt for our Brazil-registered agent 'agnt_qrst456' so we have a fresh timestamped proof of its KYC status without hitting any daily limits.”
Technical details
Endpoint
GEThttps://kya-br-agents.marcelfons.workers.dev/v1/agents/:id/verified?utm_source=zero.xyzWhen to prefer
Choose this endpoint over the free verification endpoint when you need an auditable, signed receipt of the verification — for example, for compliance documentation, audit trails, or to prove at a specific point in time that an agent was verified. Also prefer this when you need unlimited calls without hitting a daily rate limit. If you only need a quick status check with no receipt, the free tier may suffice.
Side effects
- Invalid or unknown credential ID returns a 404 not found error
- Expired credential may return a non-verified status requiring renewal via the re-issue endpoint
- Payment of $0.01 USDC not completed results in a 402 Payment Required response
- Malformed path parameter returns a 400 bad request
- Network or worker-side error returns a 500 response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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