# x402 Integrity Check

> x402 Integrity Check is a paid API for AI agents from conclavex402p04.pythonanywhere.com, paid per call via x402, $0.009/call, status unknown (last checked 2026-10-18).

Verifies an x402 catalog listing against the live 402 endpoint to detect dead, mismatched, or untrustworthy seller offers before paying

## Facts

- Endpoint: GET https://conclavex402p04.pythonanywhere.com/v1/x402-integrity?utm_source=zero.xyz
- Price: $0.009/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-integrity-check-96fe127e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AHtYVIops0w1uzOCjJTZY

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-integrity-check-96fe127e
```

Example prompt: Before I pay for that x402 API listing, run an integrity check on it — verify that the live 402 response still matches the catalog's payee, price, and network, and tell me if it's reachable and consistent.

## When to prefer this

Use this endpoint when an AI agent is about to pay a third-party x402 seller discovered via a catalog or bazaar, and needs to confirm the live offer still matches the listed payee, price, and network before committing funds. It is specifically designed for x402 catalog-vs-live preflight checks and seller trust scoring, making it more targeted than a generic HTTP health check or a broad API monitoring tool.

## Known failure modes

- Target x402 endpoint is unreachable — returned in unreachable count with no consistency verdict
- Live 402 response does not match catalog on price — flagged as amount_mismatch
- Live 402 response advertises a different network than catalog — flagged as network_mismatch
- Listing not found in bazaar — flagged as bazaar_missing
- Query params missing or malformed — may return 4xx with error detail
- Service itself is temporarily unavailable on pythonanywhere — 5xx or timeout

## How this service works

Call before trusting or paying a third-party x402 seller: catalog-vs-live integrity -- verify an x402 listing (payee, price, network, service, tags, bazaar block) against the live 402; an endpoint preflight for x402 catalog vs live offers, seller trust and listing consistency so an agent can skip dead or mismatched endpoints (JSON).

## Output

Returns a JSON object with an as_of timestamp, per-check status flags (consistent, unreachable, inconsistent, amount_mismatch, network_mismatch, network_form_only, bazaar_missing), aggregate totals over recent checks (served, checked, consistent, etc.), total catalog size, number of distinct hosts, and hosts checked in this run.

## 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"
    },
    "headers": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    },
    "pathParams": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    },
    "queryParams": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "oneOf": [
    {
     "type": "object",
     "required": [
      "result"
     ],
     "properties": {
      "result": {
       "type": "object",
       "required": [
        "as_of",
        "catalog_total",
        "distinct_hosts",
        "hosts_checked",
        "totals"
       ]
      }
     }
    },
    {
     "type": "object",
     "required": [
      "result"
     ],
     "properties": {
      "result": {
       "type": "object",
       "required": [
        "origin",
        "checked_at",
        "reachable",
        "accepts",
        "findings",
        "in_sample"
       ]
      }
     }
    }
   ],
   "required": [
    "ok",
    "endpoint",
    "result",
    "settlement"
   ],
   "properties": {
    "ok": {
     "type": "boolean"
    },
    "result": {
     "type": "object"
    },
    "endpoint": {
     "type": "string"
    },
    "settlement": {
     "type": "string"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "as_of": "2026-10-13T20:49:28Z",
  "totals": {
   "served": 167,
   "checked": 200,
   "consistent": 103,
   "unreachable": 33,
   "inconsistent": 64,
   "bazaar_missing": 7,
   "amount_mismatch": 11,
   "network_mismatch": 49,
   "network_form_only": 13
  },
  "catalog_total": 20108,
  "hosts_checked": 25,
  "distinct_hosts": 1088
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-integrity-check-96fe127e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from conclavex402p04.pythonanywhere.com](https://www.zero.xyz/host/conclavex402p04.pythonanywhere.com/llms.txt)