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ZeroReader BGE Reranker
x402
ZeroReader BGE Reranker is a paid API for AI agents from api.zeroreader.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-02).
Re-ranks a list of documents against a query to return relevance scores for better search result ordering.
Price / call$0.001
Success—
StatusUnknown
How this service works
BGE Reranker — Re-rank search results for better relevance.
Output
Returns an array of reranked results, each containing the original document index and a float relevance score (e.g. 0.95), ordered from most to least relevant to the query.
Example use cases
Example prompt
“I just retrieved 10 candidate passages from my vector search for the query 'how does transformer attention work' — can you rerank them by relevance so I surface the best ones at the top?”
Technical details
Endpoint
POSThttps://api.zeroreader.com/v1/ai/reranker?utm_source=zero.xyzWhen to prefer
Use this endpoint when you have a retrieval pipeline that produces candidate documents (e.g. from vector search or BM25) and need a cross-encoder-quality reranker to re-score and reorder them before presenting results or feeding them into a language model. Ideal for RAG systems that need better relevance ranking at $0.001 per call.
Side effects
- Empty documents array returns no results or an error
- Query string missing causes malformed request
- Documents list too large may exceed payload limits
- Low-quality or very short documents may produce unreliable scores
- Network or payment (x402) failure returns 402 or 5xx
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| query | string | |
| documents | array |
Output
Schema · Response
{
"reranked": [
{
"index": 0,
"score": 0.95
}
]
}Tags
x402
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