# SYLPHY Audit Proof Retrieval

> SYLPHY Audit Proof Retrieval is a paid API for AI agents from api.sylphyagent.com, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-14).

Retrieves the audit proof and settlement status for a specific Sylphy trading transaction by its settlement ID

## Facts

- Endpoint: GET https://api.sylphyagent.com/api/audit/%7Bid%7D/agent
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sylphy-audit-proof-retrieval-3ea2beb0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0zzVYqWxSiwMx1xtyKJjA

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 sylphy-audit-proof-retrieval-3ea2beb0
```

Example prompt: Can you pull up the Sylphy audit proof and settlement status for transaction ID 123 — I need to confirm it settled and see the fee that was charged.

## When to prefer this

Use this endpoint when you need to verify or audit a specific Sylphy settlement after it has been executed — for compliance checks, reconciliation, or confirming a trade completed. Prefer this over generic blockchain explorers when you need Sylphy-specific metadata like encrypted intent proofs and policy-check results tied to a settlement ID.

## Known failure modes

- Settlement ID not found — 404 response if the ID does not exist
- Invalid or malformed ID format — 400 bad request
- Transaction not yet settled — may return pending status or error
- Payment required — 402 if the $0.25 USDC x402 payment is not provided
- Upstream Base node unavailable — 503 or timeout

## How this service works

Sylphy helps wallets, apps, and AI agents execute payments and settlements with encrypted intent, policy checks, and audit proofs — while final settlement remains verifiable on Base.

## Output

Returns a JSON object with the settlement status (e.g. 'settled'), the fee percentage charged (e.g. '0.3%'), the Unix timestamp of settlement, and the settlement ID for audit verification.

## 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"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "id"
     ],
     "properties": {
      "id": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "fee": "0.3%",
  "status": "settled",
  "timestamp": 1700000000,
  "settlementId": "123"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sylphy-audit-proof-retrieval-3ea2beb0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.sylphyagent.com](https://www.zero.xyz/host/api.sylphyagent.com/llms.txt)