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SignalHarness URL Discovery Audit
x402
SignalHarness URL Discovery Audit is a paid API for AI agents from signalharness.ai, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).
Audits a given HTTPS URL for agent-discoverability and API accessibility, returning per-check pass/warn/fail results and discovered resource URLs
Price / call$0.02
Success—
StatusUnknown
How this service works
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Output
Returns a JSON object containing: the audited URL, an array of individual checks each with an id, url, detail, and pass/warn/fail status, a summary count of passes/warns/fails, and an array of discovered resource URLs. Also includes a receipt with payment details, latency, execution metadata, and a result SHA256 hash.
Example use cases
Pre-launch API agent readiness check
“Before I publish my new API, can you audit https://api.myproduct.com to see if it passes all the agent-discovery checks and show me any resource URLs it finds?”
Debugging a failing agent integration
“My AI agent can't seem to discover my service correctly — can you audit https://platform.example.com/services and tell me exactly which checks are failing and why?”
Competitor API discoverability comparison
“Can you run a URL discovery audit on https://api.competitorx.com and tell me how many checks pass, how many fail, and what resource URLs the audit finds?”
Technical details
Endpoint
POSThttps://signalharness.ai/api/agent/services/url_discovery_audit/invokeWhen to prefer
Choose this endpoint when you need a structured, per-check audit of whether a specific HTTPS URL is properly discoverable and accessible to AI agents — including a breakdown of what passes, warns, or fails and a list of resource URLs found. Prefer this over generic HTTP probers or link crawlers when you specifically care about agent-native discoverability criteria and want a machine-readable pass/warn/fail report with provenance receipt.
Side effects
- URL does not start with https:// — rejected by input schema pattern validation
- URL exceeds 2048 characters — rejected by maxLength constraint
- Target URL is unreachable or returns non-200 — audit may complete with all-fail checks
- Malformed or non-URL string supplied — schema validation error
- Payment not fulfilled — 402 response before execution begins
- Service timeout if target URL is very slow to respond
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string |
Output
Schema · Response
{
"type": "json",
"example": {
"replay": false,
"result": {
"url": "https://example.com/resource",
"checks": [
{
"id": "example",
"url": "https://example.com/resource",
"detail": "example",
"status": "pass"
}
],
"summary": {
"fail": 0,
"pass": 0,
"warn": 0
},
"discoveredResourceUrls": [
"example00"
]
},
"status": "succeeded",
"receipt": {
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"usage": [],
"status": "succeeded",
"network": "eip155:8453",
"artifacts": [],
"endedAtMs": 0,
"latencyMs": 0,
"paymentId": "example-payment",
"receiptId": "example-receipt",
"requestId": "example-request",
"serviceId": "url_discovery_audit",
"executionId": "example-execution",
"startedAtMs": 0,
"amountAtomic": "20000",
"resultSha256": "a95dcf32d5fe7ca2029652a9cc7474e7d464af51b34b67987acbbc2f772defd4",
"serviceVersion": "1.0.0",
"settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
},
"artifacts": [],
"requestId": "example-request",
"executionId": "example-execution"
}
}Tags
x402
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