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Proof402 x402 Audit — URL Intelligence & Endpoint Diagnostics
x402
Proof402 x402 Audit — URL Intelligence & Endpoint Diagnostics is a paid API for AI agents from proof402.15-204-209-67.sslip.io, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-14).
Inspects a public URL to assess its x402 payment protocol compatibility, returning a score, verdict, and detailed findings about payment configuration.
Price / call$0.25
Success—
StatusUnknown
How this service works
Pay-per-call page profiling and x402 endpoint diagnostics, settled in Base-mainnet USDC.
Output
Returns a JSON object containing: the audited URL, a numeric compatibility score (0–100), the HTTP status code observed, a verdict string (e.g. 'compatible'), an array of findings each with a code and pass/fail level, and a requirements object listing accepted payment schemes, x402 version, and supported networks (e.g. eip155:8453 for Base mainnet).
Example use cases
Pre-launch x402 endpoint validation
“Before I go live, can you audit https://api.myproject.io/premium-data and check if it's fully x402-compatible — I want to see the score and any issues with my payment configuration?”
Debugging a failing x402 integration
“My x402-enabled endpoint at https://services.example.com/ai/generate keeps rejecting payments — can you inspect it and tell me exactly what's misconfigured or missing?”
Verifying third-party x402 API compatibility
“I want to call https://thirdparty.io/api/results in my agent but I need to confirm it accepts x402 payments on Base mainnet — can you check its compatibility score and what payment schemes it requires?”
Technical details
Endpoint
GEThttps://proof402.15-204-209-67.sslip.io/api/x402-auditWhen to prefer
Use this endpoint when you need to programmatically verify whether a specific URL correctly implements the x402 payment protocol — especially before integrating it into an agent workflow, debugging payment failures, or auditing third-party APIs for Base mainnet USDC compatibility. Prefer this over manual inspection when you need a structured score and machine-readable findings rather than a human description.
Side effects
- URL is unreachable or returns a non-HTTP error — audit cannot complete
- Target URL does not implement x402 at all — verdict will reflect incompatibility
- Malformed or non-URI input causes request rejection
- Private or firewalled URLs cannot be inspected
- Service may return incomplete findings if the target times out
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"url": "https://example.com/api/paid",
"score": 92,
"status": 402,
"verdict": "compatible",
"findings": [
{
"code": "payment_required_present",
"level": "pass"
},
{
"code": "mainnet_network",
"level": "pass"
}
],
"requirements": {
"schemes": [
"exact"
],
"version": 2,
"networks": [
"eip155:8453"
]
}
}
}Tags
x402
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