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x402 APIs - Text Summarization
x402
x402 APIs - Text Summarization is a paid API for AI agents from x402-apis-eta.vercel.app, paid per call via x402, $0.01/call, not verified (last probed 2026-10-30); live alternatives: GPT-5.5 Text Summarization Tool ($0.0029) and x402node Text Summarizer ($0.005).
Agents call it through Zero, which pays per call: no API key and no wallet of your own. New accounts start with $5. Live alternatives for the same use case: GPT-5.5 Text Summarization Tool ($0.0029) · x402node Text Summarizer ($0.005).
Summarizes a given text into a concise set of sentences using pay-per-request micropayments via the x402 protocol
Price / call$0.01
Success—
StatusUnknown
How this service works
AI-agent-friendly APIs with instant micropayments via x402 protocol. No API keys, no accounts - just pay and access.
Output
A condensed summary of the provided text, reduced to the requested number of sentences (or a default number if max_sentences is not specified), capturing the key points of the original content.
Example use cases
Example prompt
“Summarize the following article text into no more than 3 sentences: 'Artificial intelligence is transforming industries worldwide. Companies are investing billions in machine learning research. Governments are beginning to regulate AI development to ensure safety and fairness. Experts predict AI will reshape the labor market over the next decade.'”
Technical details
Endpoint
POSThttps://x402-apis-eta.vercel.app/api/summarize?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need quick, on-demand text summarization without setting up API keys or accounts, and when you are operating in an x402-compatible micropayment environment. It is well-suited for AI agents that need to condense large amounts of text programmatically and can pay $0.01 USDC per call. Ideal for Coinbase/x402 ecosystem integrations.
Side effects
- Missing required 'text' field returns a 400 or validation error
- Payment not provided or insufficient USDC balance results in x402 payment required response
- Text too long may result in timeout or truncation
- max_sentences set to zero or a negative value may cause unexpected behavior
- Network or upstream service downtime causes 500 error
Input
{
"text": "Artificial intelligence is transforming industries worldwide. Companies are investing billions in machine learning research. Governments are beginning to regulate AI development to ensure safety and fairness. Experts predict AI will reshape the labor market over the next decade.",
"max_sentences": 3
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| textrequired | string | |
| max_sentences | number |
Output
{
"summary": "Artificial intelligence is transforming industries worldwide. Companies are investing billions in machine learning research. Governments are beginning to regulate AI development to ensure safety and fairness.",
"keywords": [
"artificial",
"intelligence",
"transforming",
"industries",
"worldwide",
"companies",
"investing",
"billions",
"machine",
"learning"
],
"summarized_at": "2026-06-18T06:16:43.678Z",
"summary_length": 208,
"original_length": 279,
"compression_ratio": "25%"
}Tags
x402
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