# imagcon.app x402 Endpoint Validator

> imagcon.app x402 Endpoint Validator is a paid API for AI agents from imagcon.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Probes any x402-protected endpoint with a real signed payment from an unfunded wallet and reports whether the facilitator accepted, rejected, or ignored it, plus lint checks and discovery diagnostics.

## Facts

- Endpoint: POST https://imagcon.app/routes/x402/validate
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/imagcon-app-x402-endpoint-validator-bfdda4a3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_fEr9bJjZ5TBUXxXbJEP9o

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 imagcon-app-x402-endpoint-validator-bfdda4a3 -d '<json body>'
```

Example prompt: Test my x402 endpoint at https://api.myservice.com/premium-data to see if the facilitator is healthy — use a POST with a JSON body containing {"query": "test"} and tell me the verdict, any lint warnings, and whether it shows up in 402index discovery.

## When to prefer this

Use this endpoint when you need to verify that a live x402 endpoint is correctly issuing and handling payment challenges through the actual facilitator flow, not just configuration checks. Choose this over static config validators when you want ground-truth evidence that the facilitator responds correctly, payments aren't silently dropped, lint issues are caught, and the endpoint is discoverable — especially as a CI/CD gate after deploys.

## Known failure modes

- Target endpoint URL is unreachable or returns non-402 response — validation cannot proceed
- Endpoint is on a non-Base-mainnet chain — probe may return incorrect verdict
- Target endpoint requires a specific non-empty body that isn't provided — challenge may not be issued
- Network timeout reaching the target endpoint — incomplete verdict returned
- Malformed x402 challenge response from target — decoding fails with error details

## How this service works

Test any x402 endpoint with a REAL signed payment from a fresh unfunded wallet — no funds can move. Returns the facilitator's verdict (healthy / broken / payment-ignored), decoded challenge, lint checks for silent payment-killers like over-long resource descriptions, and a 402index discovery report. Config validators check your paperwork; this reports what the facilitator actually said. Run it from CI after every deploy.

## Output

Returns the facilitator's verdict (healthy, broken, or payment-ignored), the decoded 402 challenge from the endpoint, lint check results flagging silent payment-killers such as over-long resource descriptions, and a 402index discovery report showing whether the endpoint is properly indexed.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string",
   "description": "The https x402 endpoint to probe (Base mainnet)"
  },
  "body": {
   "type": "object",
   "description": "JSON body the target expects (default {})"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/imagcon-app-x402-endpoint-validator-bfdda4a3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from imagcon.app](https://www.zero.xyz/host/imagcon.app/llms.txt)