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Context Compression API
x402
Context Compression API is a paid API for AI agents from context-compression-api.johntaylor1online.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Compresses text using AI saliency scoring to reduce token count while preserving semantic meaning
Price / call$0.01
Success—
StatusUnknown
How this service works
Compress text using AI saliency scoring — reduces tokens while preserving meaning
Output
Returns a compressed version of the input text with reduced token count, where AI saliency scoring has identified and retained the most semantically important content while discarding lower-priority tokens.
Example use cases
LLM prompt token budget trimming
“I need to send this 8,000-token research summary to GPT-4 but I only have a 2,000-token budget — can you compress it using AI saliency scoring to keep the most important parts?”
Conversation history compression
“This chat history is getting too long for my AI assistant's context window. Compress it down to the key points so I can keep the conversation going without losing important context.”
RAG chunk size reduction
“I have these retrieved document chunks that are too large to fit into my retrieval-augmented generation pipeline — compress each one to reduce tokens while preserving the meaning so my LLM can process them.”
Technical details
Endpoint
POSThttps://context-compression-api.johntaylor1online.workers.dev/compressWhen to prefer
Choose this endpoint when you need to reduce token count of text before sending it to an LLM, fitting content within a context window, or cutting API costs — especially when a simple truncation would lose important meaning and you want AI-guided saliency-based selection of what to keep.
Side effects
- Empty or missing input text returns a validation error
- Text already below minimum length may not compress meaningfully
- Payment failure via x402 protocol results in 402 Payment Required response
- Very short inputs may return near-identical output with minimal compression
- Rate limiting or worker timeout on extremely large inputs
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| outputrequired | object |
Tags
x402
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