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Combify Compute Chat (Text Q&A & Summarization)
x402
Combify Compute Chat (Text Q&A & Summarization) is a paid API for AI agents from compute.combify.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-10).
Answers questions, summarizes text, and generates short-form written content from a text prompt using Llama 3.1 8B Instruct for $0.01 USDC per call.
Price / call$0.01
Success—
StatusUnknown
How this service works
General question answering, summarization, and short-form generation for TEXT input (Llama 3.1 8B instruct), fixed price $0.01 USDC. Use this when you already have text; use /transcribe for audio and /caption for images. POST JSON body {prompt (required, max 2000 chars), max_tokens (optional 1-512, default 256)}. Returns {text}. Unpaid calls get 402; paid calls settle only on success.
Output
Returns a JSON object with a single 'text' field containing the model's generated response, up to the requested max_tokens (default 256, max 512). The response reflects direct output from Llama 3.1 8B Instruct based on the supplied prompt.
Example use cases
Summarize article for newsletter
“Here's a 500-word news article — can you summarize it in 2-3 sentences suitable for a newsletter intro? Keep it under 100 tokens.”
Answer FAQ from product docs
“Given this product documentation excerpt, answer the question: 'Does the subscription auto-renew?' — use only the text I'm providing and keep your answer concise, within 80 tokens.”
Draft short marketing copy
“Write a punchy 2-sentence product description for a standing desk called the 'ErgoRise Pro' — keep it under 60 tokens and make it sound energetic and modern.”
Technical details
Endpoint
POSThttps://compute.combify.app/chat?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your input is plain text and you need question answering, summarization, or short-form generation. Use /transcribe instead if your input is audio, or /caption if your input is an image. This endpoint is optimized for text-in, text-out tasks at a low fixed cost of $0.01 USDC per call, making it ideal for high-frequency lightweight inference tasks where you already have the text content ready.
Side effects
- 402 Payment Required — call was made without a valid x402 payment; retry with correct USDC payment
- prompt exceeds 2000 characters — request will be rejected
- max_tokens out of range (must be 1–512) — validation error
- model timeout or internal error — transient 5xx; retry
- empty or missing prompt field — request rejected with validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| prompt | string | User prompt, max 2000 chars |
| max_tokens | integer | Max output tokens, 1 to 512 |
Tags
x402
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