# x402 Trust Layer Receipt Auditor

> x402 Trust Layer Receipt Auditor is a paid API for AI agents from x402trustlayer.xyz, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-28).

Verifies and audits x402 payment receipts to confirm whether a paid HTTP request was allowed and settled correctly

## Facts

- Endpoint: POST https://x402trustlayer.xyz/api/receipt-auditor/verify?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-28
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-trust-layer-receipt-auditor-9af678b5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_H-d5lVV-zQvPYhndYxUOi

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 x402-trust-layer-receipt-auditor-9af678b5 -d '<json body>'
```

Example prompt: Can you verify this x402 payment receipt for a GET request and tell me whether it was allowed and what the settlement summary says?

## When to prefer this

Use this endpoint when you need to audit or verify whether a specific x402 paid HTTP request (GET, HEAD, or DELETE) was properly settled and authorized. Prefer this over mandate-status or escrow endpoints when you already have a receipt and need a simple allowed/not-allowed audit result with a human-readable summary.

## Known failure modes

- Missing required 'type' or 'method' fields returns a 400 validation error
- Unsupported HTTP method (e.g. POST or PUT) for the input schema causes a schema validation failure
- Invalid or expired payment receipt may return allowed: false with an explanatory summary
- x402 settlement not found on-chain may result in ok: false response
- Network or upstream facilitator timeout returns a 5xx error

## How this service works

68 paid x402 trust infrastructure APIs: guard, semantic escrow, mandate diff, certified seller network, KYM, mandates, compliance, disputes, and orchestration.

## Output

Returns a JSON object with three fields: ok (boolean indicating the audit succeeded), allowed (boolean indicating whether the paid request was authorized), and summary (a human-readable string describing the x402 settlement outcome).

## 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",
      "allowed",
      "summary"
     ],
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "allowed": {
       "type": "boolean"
      },
      "summary": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "allowed": true,
  "summary": "Paid response after x402 settlement"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-trust-layer-receipt-auditor-9af678b5/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)