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Autumn Eight Rerank
x402
Autumn Eight Rerank is a paid API for AI agents from x402.autumn8.net, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-10).
Reranks a list of passages or documents by relevance to a query, payable by AI agents via x402 micropayment.
Price / call$0.005
Success—
StatusUnknown
How this service works
Agent-payable inference. Chat, embeddings, rerank, transcription and speech.
Output
Returns the input documents reordered by relevance score to the query, with each document accompanied by a relevance/confidence score, enabling the caller to select top-k most relevant results.
Example use cases
RAG pipeline passage selection
“I've retrieved 15 candidate chunks from our knowledge base for the query 'how to configure OAuth2 with PKCE' — rerank them by relevance and keep only the top 3 to send to the LLM.”
Search result quality improvement
“We ran a keyword search for 'machine learning deployment best practices' and got 10 results — can you rerank them by semantic relevance to the query so the most useful ones appear first?”
Candidate answer ranking for QA
“Here are 8 candidate answers to the question 'What are the side effects of ibuprofen?' extracted from medical documents — rerank them so the most relevant and precise answer is ranked highest.”
Technical details
Endpoint
POSThttps://x402.autumn8.net/v1/rerank?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need agent-payable, micropayment-based reranking without managing API keys or subscriptions — ideal for autonomous AI agents in RAG pipelines that need to dynamically pay per rerank call via x402 protocol.
Side effects
- Empty document list returns error or empty results
- Query or documents exceeding token limits may fail or be truncated
- Payment failure via x402 results in 402 Payment Required response
- Unsupported model identifier returns model-not-found error
- Malformed request body returns 400 Bad Request
Tags
x402
Reviews
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