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capi2 API Audit
x402
capi2 API Audit is a paid API for AI agents from capi2-demand-tools.onrender.com, paid per call via x402, $0.005/call, status down (last checked 2026-09-15).
Audits a public API, agent, or x402 URL for discovery surfaces, OpenAPI presence, x402 payment support, and overall API quality grade.
Price / call$0.005
Success—
StatusDown
How this service works
Paid x402 utilities and live intelligence for autonomous agents: hashing/encoding plus public web lookup, domain intelligence, API discovery audit, evidence extraction and x402 health.
Output
Returns a JSON object containing whether x402 payment support is present, an overall letter grade (e.g. 'A'), a numeric quality score (0–100), the audited origin URL, and whether an OpenAPI specification was detected.
Example use cases
Vetting an x402 API before integration
“Before I integrate with https://payments.someservice.com, can you audit it and tell me whether it supports x402, has an OpenAPI spec, and what its overall API quality grade is?”
Checking agent discoverability of a new endpoint
“I just published my agent at https://myagent.example.com — can you audit it to see how discoverable it is and whether it shows up on any API discovery surfaces?”
Comparing API readiness scores
“Can you audit https://api.newstartup.io and give me a grade and score for how agent-ready it is, including whether it has x402 support and an OpenAPI definition?”
Technical details
Endpoint
POSThttps://capi2-demand-tools.onrender.com/v1/api/auditWhen to prefer
Choose this endpoint when you need to quickly assess whether a public API or agent URL is x402-compatible, has an OpenAPI spec, and is discoverable by other agents — especially before committing to integration or listing on a facilitator. It is purpose-built for agent infrastructure auditing rather than general web scraping or link checking.
Side effects
- Invalid or unreachable URL returns an error with no audit data
- Private or firewall-blocked URLs may return incomplete results
- URLs without any API signals may score very low or return nulls for most fields
- Malformed URI input returns a 400-level validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | Public API, agent or x402 URL; its origin and discovery surfaces are audited. |
Output
Schema · Response
{
"type": "json",
"example": {
"x402": {
"present": true
},
"grade": "A",
"score": 85,
"origin": "https://api.example.com",
"openapi": {
"present": true
}
}
}Tags
x402
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