# SignalHarness Search Query Parser

> SignalHarness Search Query Parser 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).

Parses and analyzes a raw search query string into structured components, returning a JSON analysis of the query's intent and entities.

## Facts

- Endpoint: POST https://signalharness.ai/api/agent/services/search_query_parse/invoke
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/signalharness-search-query-parser-72e46a09
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qZbkW9NYZxmt9hXiiIGQ7

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability signalharness-search-query-parser-72e46a09 -d '<json body>'
```

Example prompt: Parse this search query for me and break it down into its structured components: 'best noise-cancelling headphones under $200 with Bluetooth 5.0'

## When to prefer this

Choose this endpoint when you need to programmatically decompose a raw natural language search query into structured components before passing it downstream to a search engine, recommendation system, or filter-based UI. It is particularly useful for agentic pipelines where understanding user intent from free-text input is a prerequisite step. At $0.01 USDC per call via the x402 micropayment protocol, it suits high-frequency preprocessing use cases where cost-per-call must stay minimal.

## Known failure modes

- Malformed or empty request_json input may cause validation errors
- Very short or ambiguous queries may produce low-confidence or incomplete parse results
- Caller-supplied data warnings indicate results should be verified before relying on them
- Queries exceeding 65536 characters will be rejected by the input schema
- Network or payment failures may prevent execution from completing

## How this service works

Explore 330 pay-per-call x402 API services and 27 agent-native digital products, with Base USDC pricing, secure Polar checkout, and free discovery.

## Output

Returns a JSON object containing the parsed analysis of the submitted search query, including an analysis_json field with structured entity and intent data, a list of warnings (e.g. to verify caller-supplied data), a service_id, evidence_scope indicator, and a full execution receipt with payment metadata, request/execution IDs, result hash, and latency information.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "request_json": {
   "type": "string",
   "maxLength": 65536,
   "minLength": 2
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "replay": false,
  "result": {
   "warnings": [
    "Verify the caller-supplied data before relying on this result."
   ],
   "service_id": "search_query_parse",
   "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_query_parse",
   "executionId": "example-execution",
   "startedAtMs": 0,
   "amountAtomic": "10000",
   "resultSha256": "ae530e4064089da97934a64185ac748fddb7cd4a6bf499bcb8794b86c5bcd3c7",
   "serviceVersion": "1.0.0",
   "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
  },
  "artifacts": [],
  "requestId": "example-request",
  "executionId": "example-execution"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/signalharness-search-query-parser-72e46a09/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from signalharness.ai](https://www.zero.xyz/host/signalharness.ai/llms.txt)