# x402.fuchss.app — x402 Endpoint History & Trust Scores

> x402.fuchss.app — x402 Endpoint History & Trust Scores is a paid API for AI agents from x402.fuchss.app, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).

Returns historical uptime, 402-compliance, price history, and on-chain USDC settlement data for a specific x402 resource URL over a configurable lookback window

## Facts

- Endpoint: POST https://x402.fuchss.app/v1/x402-history
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-fuchss-app-x402-endpoint-history-trust-scores-db5a925f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_s98lc1QAaS8lWUIRlDeCV

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-fuchss-app-x402-endpoint-history-trust-scores-db5a925f -d '<json body>'
```

Example prompt: Can you pull the x402 trust history for https://api.example.com/v1/generate over the last 60 days — I want to see its uptime, 402-compliance record, and USDC settlement volume before I build a dependency on it?

## When to prefer this

Use this endpoint when an agent needs to evaluate whether a specific x402 pay-per-call API is trustworthy before integrating with it — especially when you need historical uptime, price stability, 402-protocol compliance, and verifiable on-chain settlement volume rather than just a current status ping. Prefer this over generic uptime monitors because it is purpose-built for the x402 payment protocol ecosystem and provides crypto-native settlement evidence.

## Known failure modes

- Unknown or unlisted resource URL returns empty or 404-equivalent result
- Days parameter out of 1-90 range may return validation error
- Resource URL not yet indexed by the monitoring service returns no data
- Payment of $0.02 USDC not settled causes 402 response before data is returned
- Malformed resource URL (not https://) triggers required field validation error

## How this service works

Trust, reputation & reliability scores for x402 endpoints. We monitor every listed x402 service 24/7: uptime probes, 402-envelope compliance, price history, and real on-chain USDC settlement volume. Free grade & recommendation for any endpoint, $0.005 for a full data breakdown.

## Output

A JSON object containing historical trust metrics for the specified x402 resource URL, including uptime probe results, 402-envelope compliance checks, price history over the requested window, and real on-chain USDC settlement volume aggregates

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "days": {
   "type": "integer"
  },
  "resource": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "probes": [
   {
    "amount": "200",
    "latencyMs": 312,
    "reachable": true,
    "probedAtTs": 1782826208450,
    "probeStatus": "ok"
   }
  ],
  "resource": "https://api.example.com/v1/thing",
  "snapshots": [
   {
    "listed": true,
    "source": "bazaar",
    "accepts": [
     {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "payTo": "0xa2477E16dCB42E2AD80f03FE97D7F1a1646cd1c0",
      "amount": "200",
      "scheme": "exact",
      "network": "eip155:8453"
     }
    ],
    "observedAtTs": 1782826208450
   }
  ],
  "generatedAt": 1782826208450
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-fuchss-app-x402-endpoint-history-trust-scores-db5a925f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.fuchss.app](https://www.zero.xyz/host/x402.fuchss.app/llms.txt)