# x402 Trust: x402 Endpoint History & Reliability Data

> x402 Trust: x402 Endpoint History & Reliability Data is a paid API for AI agents from x402-trust.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).

Returns historical probe data, uptime records, 402-compliance snapshots, and on-chain USDC settlement details for a specific x402 endpoint over a configurable time window.

## Facts

- Endpoint: POST https://x402-trust.com/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-trust-x402-endpoint-history-reliability-data-79953eef
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7krdCU2eAXq01CPbdmUYn

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-x402-endpoint-history-reliability-data-79953eef -d '<json body>'
```

Example prompt: Can you pull the last 30 days of probe history for https://api.example.com/v1/thing from x402 Trust — I want to see uptime, latency, and whether its 402-envelope compliance and USDC settlement details have been consistent?

## When to prefer this

Use this endpoint when you need historical time-series data — probe logs, latency trends, 402-compliance snapshots, or payment address history — for a specific x402 resource URL. It is preferable to the free grade endpoint when you need the full raw data breakdown rather than a summary score, and it is the right choice when auditing, vetting, or debugging an x402 service over a defined historical window.

## Known failure modes

- Unknown or unlisted resource URL returns empty probes and snapshots arrays
- Invalid days parameter (negative or non-integer) may return a 400 error
- Resource URL not monitored by x402 Trust returns no data
- Payment failure for the $0.02 USDC call results in 402 response requiring payment
- Malformed POST body returns validation error
- Endpoint temporarily unavailable returns 5xx

## 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

Returns a JSON object containing: an array of timestamped probe results (reachability, latency in ms, probe status, payment amount), an array of 402-envelope snapshots (listing source, accepted asset details, payment address, network, amount, observation timestamp), and a top-level generatedAt timestamp. Together these let an agent assess the historical reliability, pricing consistency, and on-chain compliance of any x402 endpoint.

## 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-trust-x402-endpoint-history-reliability-data-79953eef/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-trust.com](https://www.zero.xyz/host/x402-trust.com/llms.txt)