The full upstream README, mirrored here for reference. Install config, tool schemas, adoption signals, and an original overview live on the RyRank listing page.
A Cohere-compatible reranker, pay-per-call in USDC on Base (x402), free tier, no signup.
Hosted API: https://trigeochiral.com — set it as RYRANK_API.
| Tool | What |
|---|---|
rerank | Rerank documents by relevance to a query. Cohere-compatible response shape (results: [{index, relevance_score}]), so it drops into an existing co.rerank() call. ~$0.001/call over x402 (roughly half Cohere Rerank's list price) or a free tier. |
A hybrid reranker, not a cross-encoder: strong when the candidates already share vocabulary with the query, which is the common case for RAG retrieval output and document/tool shortlists. Built for high-volume, latency- and cost-sensitive reranking — narrowing a retrieval candidate set, deduping, triage — rather than close semantic disambiguation between near-identical phrasings. Pay-per-call and about half the price is the trade for that.
Verified against the real cohere.Client, cohere.ClientV2 and voyageai.Client SDKs:
point base_url at this API and existing rerank code runs unmodified.
or with uvx (no install):
Optional: RYRANK_XPAYMENT = a base64 x402 X-PAYMENT payload, to make paid calls past the
free tier. Without it you get 25 free calls/day per IP.
Also speaks the exact Cohere v2 (POST /v2/rerank) and Voyage (POST /voyage/v1/rerank) request
and response shapes, so their official SDKs work unmodified with just a base_url override — see
https://trigeochiral.com for details.
MIT