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SignalHarness Search Result Evidence Coverage
x402
SignalHarness Search Result Evidence Coverage is a paid API for AI agents from signalharness.ai, paid per call via x402, $0.015/call, status unknown (last checked 2026-09-13).
Analyzes caller-supplied search result data to assess evidence coverage and return a structured analysis with warnings about data provenance.
Price / call$0.015
Success—
StatusUnknown
How this service works
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Output
Returns a structured JSON object containing an analysis_json field with evidence coverage details, an evidence_scope field (e.g. 'caller_supplied_data'), a list of warnings about data provenance, and a full payment receipt with execution metadata including latency, payment ID, and a SHA-256 hash of the result.
Example use cases
Research evidence audit for news article
“I've collected a bunch of search results for my article on vaccine efficacy — can you run them through the evidence coverage checker and tell me which ones are actually backed by solid evidence?”
Validating search results for a report
“Before I include these search results in my client report, can you assess the evidence coverage to see if there are any gaps or weak spots I should flag?”
AI agent search quality check
“My agent just fetched search results about recent Fed interest rate decisions — can you analyze their evidence coverage so I know how much to trust them before passing them to downstream tools?”
Technical details
Endpoint
POSThttps://signalharness.ai/api/agent/services/search_result_evidence_coverage/invokeWhen to prefer
Choose this endpoint when you need a lightweight, pay-per-call analysis of search result evidence quality without managing your own validation pipeline. Best suited for agents that retrieve web search results and need a quick evidence-coverage audit before downstream processing. Prefer over custom validation when you want a receipted, auditable result with provenance warnings included.
Side effects
- Malformed or non-JSON request_json input causes validation failure
- Payload exceeds 65536 character limit, rejected at input
- Caller-supplied data is flagged as unverified — warnings returned but analysis still proceeds
- Payment not confirmed, endpoint returns 402 and does not execute
- Empty or minimal JSON input may yield low-confidence or trivial analysis
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| request_json | string |
Output
Schema · Response
{
"type": "json",
"example": {
"replay": false,
"result": {
"warnings": [
"Verify the caller-supplied data before relying on this result."
],
"service_id": "search_result_evidence_coverage",
"analysis_json": "{\"example\":\"schema-valid caller-supplied data\"}",
"evidence_scope": "caller_supplied_data"
},
"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": "search_result_evidence_coverage",
"executionId": "example-execution",
"startedAtMs": 0,
"amountAtomic": "15000",
"resultSha256": "7a0f793bc847c155a0bcdf9daed790ff9d5b494185513b4e9ed6c287c31c9b49",
"serviceVersion": "1.0.0",
"settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
},
"artifacts": [],
"requestId": "example-request",
"executionId": "example-execution"
}
}Tags
x402
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