# Velaru Receipt Attestation Verifier

> Velaru Receipt Attestation Verifier is a paid API for AI agents from velaru.xyz, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-11).

Verifies and returns a cryptographic attestation for a Velaru receipt entry, confirming its validity and signature without requiring login.

## Facts

- Endpoint: GET https://velaru.xyz/api/v1/verify/%7Bentry_id%7D/attestation?utm_source=zero.xyz
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/velaru-receipt-attestation-verifier-920bfb20
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_sVZR8Ql88zYecUu1_CrpH

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 velaru-receipt-attestation-verifier-920bfb20
```

Example prompt: Can you verify the Velaru attestation for receipt entry hash 'a3f8c2d1b7e94560' and tell me if the signature is valid?

## When to prefer this

Choose this endpoint when you need to cryptographically verify the authenticity of a Velaru receipt or claim without requiring user login, particularly in auditing, insurance claim workflows, or third-party trust verification scenarios where stranger-verifiable proof is required. It is purpose-built for the Velaru claimsearch402 attestation format and should be preferred over manual URL-based verification when automated proof validation is needed.

## Known failure modes

- Invalid or malformed entry_id (too short, wrong format) — may return validation error or 404
- Entry not found in Velaru's records — returns valid: false or 404
- Signature verification failure — returns signature_valid: false
- Payment failure via x402 — 402 response requiring USDC payment before proceeding
- Server unavailability — 5xx response

## How this service works

NAIC survey closes Sept 30. Scan Exhibit D · run bind room · 10-second demo. Stranger-verifiable proof — no login.

## Output

Returns a JSON object with the attestation spec version string (e.g. 'velaru-claimsearch402-attestation-v1'), a boolean 'valid' indicating whether the entry is legitimate, the original entry_id, a human-readable verify URL for external confirmation, and a 'signature_valid' boolean confirming cryptographic integrity of the attestation.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input",
  "output"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "entry_id"
   ],
   "properties": {
    "entry_id": {
     "type": "string",
     "minLength": 8,
     "description": "Velaru receipt entry_hash (URL path parameter)"
    }
   }
  },
  "output": {
   "type": "object",
   "required": [
    "spec",
    "entry_id",
    "valid"
   ],
   "properties": {
    "spec": {
     "type": "string"
    },
    "valid": {
     "type": "boolean"
    },
    "entry_id": {
     "type": "string"
    },
    "verify_url": {
     "type": "string",
     "format": "uri"
    },
    "signature_valid": {
     "type": "boolean"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "spec": "velaru-claimsearch402-attestation-v1",
  "valid": true,
  "entry_id": "{entry_id}",
  "verify_url": "https://velaru.xyz/verify?entry_id={entry_id}",
  "signature_valid": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/velaru-receipt-attestation-verifier-920bfb20/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from velaru.xyz](https://www.zero.xyz/host/velaru.xyz/llms.txt)