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SignalHarness RRF Merge Search Results
x402
SignalHarness RRF Merge Search Results 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).
Merges multiple ranked search result lists into a single unified ranking using Reciprocal Rank Fusion (RRF)
Price / call$0.015
Success—
StatusUnknown
How this service works
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Output
A JSON object containing the merged, re-ranked results produced by Reciprocal Rank Fusion across all input ranked lists, along with a service receipt including payment confirmation, execution metadata, and a SHA256 result hash for verification. Warnings may be included if input data could not be fully verified.
Example use cases
Hybrid RAG pipeline result fusion
“I'm running a RAG pipeline that queries both a vector store and a BM25 index separately — can you fuse those two ranked result lists into one combined ranking using RRF so I can feed the best results to the LLM?”
Multi-engine search result merging
“I ran the same query across Google, Bing, and DuckDuckGo and got three separate ranked result lists — merge them all into a single best-of ranking using reciprocal rank fusion.”
Combine semantic and keyword search
“I have two ranked lists: one from semantic similarity search and one from traditional keyword matching — fuse them together into a single unified ranked list using RRF scoring.”
Technical details
Endpoint
POSThttps://signalharness.ai/api/agent/services/search_result_rrf_merge/invokeWhen to prefer
Use this endpoint when you have multiple ranked result lists from heterogeneous retrieval systems (e.g., BM25 + dense vector search) and need to merge them into a single coherent ranking without training a learned ranker. Ideal for hybrid search pipelines, RAG systems, or any scenario where results from different sources must be reconciled into one ordered list using a parameter-free, robust fusion method.
Side effects
- Malformed or invalid JSON in request_json field causes rejection
- Input ranked lists with incompatible formats or missing rank fields
- Empty or null result lists produce empty merged output
- Exceeding the 65536 character limit on request_json triggers validation error
- Payment failure via x402 protocol prevents execution
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_rrf_merge",
"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_rrf_merge",
"executionId": "example-execution",
"startedAtMs": 0,
"amountAtomic": "15000",
"resultSha256": "bb185871b0f0937c9a6619ee9411914c6c7c8e1b4b2c44d705432861da7aff1d",
"serviceVersion": "1.0.0",
"settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
},
"artifacts": [],
"requestId": "example-request",
"executionId": "example-execution"
}
}Tags
x402
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