# SignalHarness Search Result Deduplication

> SignalHarness Search Result Deduplication 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).

Removes duplicate entries from a JSON-formatted list of search results, returning a deduplicated set with analysis metadata.

## Facts

- Endpoint: POST https://signalharness.ai/api/agent/services/search_result_deduplicate/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-result-deduplication-928154b4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_smyydXz0B7HzegBDTyPIV

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-result-deduplication-928154b4 -d '<json body>'
```

Example prompt: I just got back a big list of search results in JSON format and there are a lot of duplicates in it — can you deduplicate them for me using SignalHarness and return the cleaned-up set?

## When to prefer this

Choose this endpoint when you have a JSON-formatted list of search results that may contain duplicate entries and need a lightweight, pay-per-call deduplication pass before downstream processing. It is well-suited for agent pipelines that aggregate results from multiple sources and need cheap, automated deduplication at $0.01 USDC per call via x402 on Base.

## Known failure modes

- Malformed or invalid JSON in request_json field causes rejection
- Input JSON exceeds 65,536 character limit resulting in validation error
- Ambiguous duplicate detection criteria may yield unexpected deduplication results
- Payment failure on Base network prevents execution
- Service returns warnings that caller-supplied data should be verified independently

## 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 a deduplicated analysis result (analysis_json), a service_id confirming the operation, warnings about caller-supplied data verification, and a receipt with payment confirmation details including network, amount, latency, and execution metadata on the Base network.

## 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_result_deduplicate",
   "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_deduplicate",
   "executionId": "example-execution",
   "startedAtMs": 0,
   "amountAtomic": "10000",
   "resultSha256": "85e28f21a17497881196df0ec0f4ca02aec858686d543a1284d3f650c4568665",
   "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-result-deduplication-928154b4/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)