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SignalHarness Agent Tool Definition Normalizer
x402
SignalHarness Agent Tool Definition Normalizer is a paid API for AI agents from signalharness.ai, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-13).
Normalizes and validates agent tool definition JSON into a canonical, schema-compliant format with warnings about data quality.
Price / call$0.005
Success—
StatusUnknown
How this service works
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Output
Returns a JSON object containing the normalized analysis JSON of the submitted tool definition, a list of warnings about data quality or caller-supplied data issues, the service ID, evidence scope classification, and a full execution receipt with payment details, request/execution IDs, result hash, and status.
Example use cases
Validate tool spec before deployment
“Before I publish this tool to my agent marketplace, can you normalize and validate this tool definition JSON and tell me if there are any warnings I should fix? Here's the spec: {"name":"weather_lookup","description":"Gets weather","input":{"location":"string"}}”
Canonicalize multi-source tool definitions
“I've collected tool definitions from three different sources and they're all formatted differently — can you normalize this one into a canonical agent-compatible format so I can compare them consistently? The JSON is: {"tool_name":"search","params":[{"name":"query","kind":"string"}]}”
Debug malformed agent tool JSON
“My agent keeps rejecting this tool definition and I'm not sure why — can you run it through the normalizer and show me any warnings or structural issues? Here's what I have: {"id":"summarize","inputs":{"text":"string"},"output":"string"}”
Technical details
Endpoint
POSThttps://signalharness.ai/api/agent/services/agent_tool_definition_normalize/invokeWhen to prefer
Choose this endpoint when you need to normalize, validate, or canonicalize an agent tool definition JSON into a standard format, especially within an x402 pay-per-call agent pipeline on Base. Prefer this over generic JSON validators when you specifically need agent-tool-definition-aware normalization with structured warnings and a cryptographic receipt for auditability.
Side effects
- Invalid or malformed JSON in request_json field causes validation failure
- request_json exceeds 65536 character limit returns error
- Empty or too-short request_json (below 2 chars) rejected
- Payment failure on x402 protocol prevents execution
- Caller-supplied data flagged as unverified — warnings returned but results may be unreliable
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_definition_normalize",
"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_definition_normalize",
"executionId": "example-execution",
"startedAtMs": 0,
"amountAtomic": "5000",
"resultSha256": "7bef2140bb8448d9003773cd5de76ce2c6be384bf2e582c6f66e98ed242e5f27",
"serviceVersion": "1.0.0",
"settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
},
"artifacts": [],
"requestId": "example-request",
"executionId": "example-execution"
}
}Tags
x402
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