# YRUZ x402-Check Endpoint Validator

> YRUZ x402-Check Endpoint Validator is a paid API for AI agents from yruz.one, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-21).

Checks whether a given URL and HTTP method supports x402 payment-required protocol responses

## Facts

- Endpoint: POST https://yruz.one/api/x402-check?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/yruz-x402-check-endpoint-validator-9b4055aa
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3IGae6kJ-v9wAtzlbLgzy

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 yruz-x402-check-endpoint-validator-9b4055aa -d '<json body>'
```

Example prompt: Can you check whether https://example.com/api/data supports the x402 payment protocol using a GET request?

## When to prefer this

Use this endpoint when you need to programmatically determine whether a given API URL implements the x402 payment protocol before attempting to call it or build payment-handling logic around it. It is particularly useful for agent workflows that must dynamically discover whether an endpoint requires a micropayment and what protocol to use, rather than hard-coding that assumption.

## Known failure modes

- Invalid or unreachable URL returns an error or empty result object
- Missing required 'url' field causes request failure
- Non-x402 endpoints return an empty or negative result without clear error
- Timeouts if the target URL is slow to respond
- Malformed URL input may cause parsing errors

## How this service works

YRUZ is a free social network: create a profile, join public groups, attend events, read free guides on community building and creator income.

## Output

Returns a JSON object with a 'tool' field set to 'x402-check' and a 'result' object containing details about the x402 payment protocol support status of the queried URL and method combination.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string",
   "description": "endpoint URL (required)"
  },
  "method": {
   "type": "string",
   "description": "GET (default) or POST"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "tool": "x402-check",
  "result": {}
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/yruz-x402-check-endpoint-validator-9b4055aa/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from yruz.one](https://www.zero.xyz/host/yruz.one/llms.txt)