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Revenue Swarm x402 Audit — x402 Payment Compatibility Checker
x402
Revenue Swarm x402 Audit — x402 Payment Compatibility Checker is a paid API for AI agents from eu-tender-x402-v3-production.up.railway.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-29).
Audits a public x402 endpoint for payment protocol compatibility, returning a score, pass/fail checks, warnings, and hard failures.
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-call B2B sales lead and procurement intelligence plus Base wallet data for agents. Search EU tenders/RFPs or inspect a Base wallet. Payments use x402 USDC on Base.
Output
Returns a JSON object containing a numeric compatibility score (0–100), an overall verdict string (e.g. 'compatible'), an array of individual check results, a list of warnings, a list of hard failures, the target URL audited, the product label, and a generated_at timestamp.
Example use cases
Pre-launch x402 API validation
“Before I list my new pay-per-call API on an x402 facilitator, can you run a compatibility audit on https://my-service.example.com/api/leads and tell me the score, verdict, and any hard failures I need to fix?”
Debugging a failing x402 payment flow
“My x402 endpoint at https://partner-api.example.com/api/rfp-search keeps rejecting payments — can you audit it and show me exactly which checks are failing and what the warnings say?”
Verifying a third-party x402 service
“I'm thinking of integrating with https://third-party.example.com/api/tender-data in my agent — can you run an x402 compatibility audit on it first and tell me if it gets a clean verdict with no hard failures?”
Technical details
Endpoint
GEThttps://eu-tender-x402-v3-production.up.railway.app/api/x402-audit?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to verify that a specific public URL correctly implements the x402 HTTP payment protocol before integrating it, listing it on a facilitator, or including it in an agent workflow. It is the right choice for pre-flight compatibility checking and diagnosing payment flow issues on x402 APIs, rather than for general API health checks or non-x402 payment systems.
Side effects
- Missing or invalid 'url' query parameter returns an error
- Target URL is unreachable or returns no x402 headers — audit may return hard failures or incomplete checks
- Non-public or firewalled endpoints may produce incomplete audit results
- Malformed URL input may cause validation errors
- Network timeout on the target endpoint may cause partial results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"score": 100,
"checks": [],
"product": "x402 Payment Preflight & Settle Check",
"verdict": "compatible",
"warnings": [],
"hard_failures": []
}
}Tags
x402
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