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SearchMux Canary — x402 API Discovery Readiness Check
x402
SearchMux Canary — x402 API Discovery Readiness Check is a paid API for AI agents from searchmux-agent-search.burnzzz0.chatgpt.site, paid per call via x402, $0.099/call, status unknown (last checked 2026-10-10).
Scans an OpenAPI endpoint for x402 payment protocol compliance and returns a structured readiness report with findings, pricing metadata, and compliance score.
Price / call$0.099
Success—
StatusUnknown
How this service works
Five accountless x402 tools for agent search, evidence, research deltas, and passive API discovery readiness.
Output
Returns a JSON object containing: a boolean readiness flag, a compliance score (0–100), the scanned origin URL, a summary of errors/warnings/paid operations, the OpenAPI document size and HTTP status, a list of specific findings, an array of operations with their path, HTTP method, price (amount and currency), and x402 protocol flag, a SHA-256 fingerprint of the spec, and a checkedAt timestamp with a unique requestId.
Example use cases
Pre-flight check before agent payment
“Before my agent tries to call https://payments.myservice.com, can you scan it with the canary tool and tell me if it's x402-ready, what the price per call is, and whether there are any compliance issues I should fix?”
Audit a new third-party API
“I just found a third-party API at https://api.dataprovider.io — can you check if it supports x402 payments, score its compliance, and list which endpoints have 402 support and what they cost?”
Validate my own API before publishing
“I'm about to list my API on a marketplace — can you run the canary readiness scan on https://api.myproduct.dev and tell me if my OpenAPI document passes x402 compliance, and flag any errors or warnings I need to address?”
Technical details
Endpoint
POSThttps://searchmux-agent-search.burnzzz0.chatgpt.site/api/canary?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to programmatically assess whether a remote API is ready for autonomous AI agent interaction via the x402 payment protocol, especially before attempting a paid call, listing an API in a marketplace, or debugging why an agent cannot discover or pay for an API. Prefer this over manual OpenAPI inspection when you need a structured compliance score, per-operation pricing breakdown, and machine-readable findings in a single accountless call.
Side effects
- Origin URL unreachable — returns non-ready status with HTTP errors in findings
- OpenAPI document missing or malformed — low score with parsing warnings
- No x402-annotated operations found — score reflects zero compliant operations
- Invalid URL format submitted — request rejected with validation error
- API spec too large — may time out or return partial findings
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| origin | string | Bare public HTTPS origin to audit; no credentials, query, fragment, path, IP literal, or custom port. |
Output
Schema · Response
{
"type": "json",
"example": {
"ready": true,
"route": "canary",
"score": 100,
"origin": "https://api.example.com",
"summary": {
"errors": 0,
"warnings": 0,
"paidOperations": 1,
"compliantOperations": 1
},
"version": 1,
"document": {
"bytes": 4096,
"httpStatus": 200,
"openapiVersion": "3.1.0"
},
"findings": [],
"checkedAt": "2026-07-24T00:00:00.000Z",
"requestId": "8be866649f8044debfad",
"operations": [
{
"path": "/api/search",
"price": {
"mode": "fixed",
"amount": "0.019",
"currency": "USD"
},
"has402": true,
"method": "POST",
"protocols": [
"x402"
]
}
],
"fingerprint": "0000000000000000000000000000000000000000000000000000000000000000",
"projectionVersion": 1
}
}Tags
x402
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