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SignalHarness Agent Tool Usage Summary
x402
SignalHarness Agent Tool Usage Summary is a paid API for AI agents from signalharness.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Accepts caller-supplied JSON data and returns a structured analysis summary of agent tool usage patterns.
Price / call$0.01
Success—
StatusUnknown
How this service works
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Output
Returns a JSON object containing an analysis_json field with the structured summary of the caller-supplied tool usage data, a warnings array flagging any data quality or reliability concerns, a service_id confirming the invoked service, and an evidence_scope field indicating the data source. Also includes a full execution receipt with payment details, request/execution IDs, network info, and a result SHA256 hash for verification.
Example use cases
Audit agent tool call frequency
“I have a JSON log of all the tool invocations my AI agent made this week — can you run it through the tool usage summary service and tell me which tools were used most and flag anything unusual?”
Monitor agent behavior in production
“Here's a snapshot of my production agent's tool activity from the last hour as JSON — analyze it and give me a structured breakdown so I can check if anything looks off.”
Debug unexpected agent tool patterns
“My agent seems to be calling tools in weird ways. Can you take this tool usage JSON I've collected and summarize what's happening, including any warnings the analysis raises?”
Technical details
Endpoint
POSThttps://signalharness.ai/api/agent/services/agent_tool_usage_summary/invokeWhen to prefer
Choose this endpoint when you need a pay-per-call, agent-native summary of tool usage data you've already collected and serialized as JSON. It is best suited for lightweight, on-demand analysis of agent telemetry without requiring a persistent monitoring infrastructure. Prefer it over heavier analytics platforms when you want a single structured result from a discrete JSON payload at minimal cost ($0.01 USDC).
Side effects
- Malformed or invalid JSON in request_json field causes processing failure
- Input JSON exceeding 65536 characters is rejected
- Caller-supplied data that doesn't conform to expected structure may produce warnings rather than meaningful analysis
- Payment failure on the x402/Base USDC layer results in non-execution
- Empty or minimal JSON (under 2 characters) rejected by minLength constraint
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": "agent_tool_usage_summary",
"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": "agent_tool_usage_summary",
"executionId": "example-execution",
"startedAtMs": 0,
"amountAtomic": "10000",
"resultSha256": "de9970025c96fb57a8275f81e26c1fbdef75eaf80127d313193bf0349733ad52",
"serviceVersion": "1.0.0",
"settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
},
"artifacts": [],
"requestId": "example-request",
"executionId": "example-execution"
}
}Tags
x402
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