# x402trustlayer.xyz Attestation Issuance

> x402trustlayer.xyz Attestation Issuance is a paid API for AI agents from x402trustlayer.xyz, paid per call via x402, $0.04/call, status unknown (last checked 2026-10-23).

Issues a signed TrustLayer attestation for a merchant or entity after payment is confirmed via x402.

## Facts

- Endpoint: POST https://x402trustlayer.xyz/api/attestation/issue?utm_source=zero.xyz
- Price: $0.04/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402trustlayer-xyz-f4ce13b7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4Tu65DdFuq7Kw-I3E94N8

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability x402trustlayer-xyz-f4ce13b7 -d '<json body>'
```

Example prompt: Issue a TrustLayer attestation for this merchant — I need to know if they're allowed and get back an attestationId I can use to confirm their trust status.

## When to prefer this

Use this endpoint when you need a cryptographically-backed TrustLayer attestation tied to a micropayment, particularly for verifying merchant reliability or agent interaction authorization in x402-compatible workflows. Prefer this over generic trust scores when you need a formal attestationId credential that can be referenced downstream.

## Known failure modes

- Payment not confirmed — attestation not issued, 402 Payment Required returned
- Invalid or missing HTTP method in input schema — 400 Bad Request
- Merchant or entity not found — attestation denied with allowed: false
- Payment amount insufficient for x402 protocol — payment rejected
- Service unavailable or internal error — 500 response

## How this service works

Issues trust attestations for verified identities or transactions.

## Output

Returns a JSON object with an `ok` boolean and an `attestation` object containing an `attestationId` string and an `allowed` boolean indicating whether the entity passed the trust check.

## Request schema (JSON Schema)

```json
{
 "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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "ok",
      "attestation"
     ],
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "attestation": {
       "type": "object",
       "required": [
        "attestationId",
        "allowed"
       ],
       "properties": {
        "allowed": {
         "type": "boolean"
        },
        "attestationId": {
         "type": "string"
        }
       }
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402trustlayer-xyz-f4ce13b7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402trustlayer.xyz](https://www.zero.xyz/host/x402trustlayer.xyz/llms.txt)