# windtrapdata.dev x402 Endpoint Validator & Directory Probe

> windtrapdata.dev x402 Endpoint Validator & Directory Probe is a paid API for AI agents from windtrapdata.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-20).

Validates a target HTTPS endpoint for x402 HTTP 402 payment protocol compliance and returns a live-probed directory index of working x402 Bazaar APIs.

## Facts

- Endpoint: POST https://windtrapdata.dev/v1/reliability/probe?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/windtrapdata-dev-x402-endpoint-validator-directory-probe-329a971b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jLg6hVxNtQSNlquacwNm6

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 windtrapdata-dev-x402-endpoint-validator-directory-probe-329a971b -d '<json body>'
```

Example prompt: Can you probe https://myapi.example.com/v1/data using a GET request and verify it's correctly implementing the x402 payment protocol — also pull the directory index of other working x402 Bazaar services while you're at it?

## When to prefer this

Choose this endpoint when you need to verify that a specific HTTPS endpoint correctly implements the x402 HTTP 402 payment protocol and Bazaar schema, or when you want to discover a curated directory of live, working x402 APIs. It is the go-to tool for x402 ecosystem discovery and compliance auditing, especially useful before integrating a new paid API or listing your own service on Bazaar.

## Known failure modes

- Target URL is unreachable or returns unexpected HTTP status — probe returns uptime failure
- Target endpoint does not implement x402 at all — returns non-compliance report
- Invalid or malformed target URL — returns validation error
- Target URL returns x402 headers with incorrect schema — returns partial compliance with error details
- Directory index unavailable if crawl data is stale or service is down

## How this service works

x402 endpoint validator, uptime probe, and crawled directory index of working x402 Bazaar APIs ($0.001 USDC) — Audits HTTP 402 PAYMENT-REQUIRED headers and returns verified working x402 services.

## Output

Returns an x402 compliance audit report for the target URL including HTTP 402 header validity, Bazaar schema conformance, uptime status, and optionally a crawled directory index of live-verified working x402 Bazaar APIs with their endpoints and pricing.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "method": {
   "enum": [
    "GET",
    "POST"
   ],
   "type": "string",
   "description": "HTTP method to use when probing the target x402 endpoint."
  },
  "targetUrl": {
   "type": "string",
   "description": "Public HTTPS endpoint URL to validate for x402 v2 payment protocol and Bazaar schema compliance."
  },
  "includeDirectoryIndex": {
   "type": "boolean",
   "description": "When true, returns the crawled and live-probed directory index of working x402 Bazaar services."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/windtrapdata-dev-x402-endpoint-validator-directory-probe-329a971b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from windtrapdata.dev](https://www.zero.xyz/host/windtrapdata.dev/llms.txt)