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Synapse Text Summarizer
x402
Synapse Text Summarizer is a paid API for AI agents from anibalb.duckdns.org, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-31).
Summarizes a block of text by extracting the most important sentences, returning a condensed summary with sentence count metadata.
Price / call$0.002
Success—
StatusUnknown
How this service works
Public data and utility APIs paid per call in USDC on Base (x402). No accounts, no API keys. 174 routes: crypto/equity data, onchain reads, DNS/email/security intel, geo/weather, x402 payment diagnostics, dev utilities and more.
Output
Returns a JSON object with a 'summary' string (the condensed text), 'selected' integer (number of sentences chosen), and 'original_sentences' integer (total sentences in the input), allowing the caller to see both the summary and how much compression occurred.
Example use cases
Condense research paper abstract
“I have a 500-word methodology section from a research paper — can you boil it down to just the essential sentences so I can get the key points quickly?”
TL;DR for meeting notes
“These meeting notes are really long. Can you extract the most important sentences and give me a short summary I can share with the team?”
News article digest
“I've got a full news article here — can you summarize it into just the core sentences so I can understand the story in under a minute?”
Technical details
Endpoint
GEThttps://anibalb.duckdns.org/x402/summarize?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, pay-per-call text summarization API with no account or API key setup, billed in USDC over x402 on Base. It is ideal for agents that need to condense arbitrary text on demand without committing to a subscription, and when the sentence-selection metadata (how many sentences were chosen vs original) is useful for downstream processing.
Side effects
- Missing 'input' field returns a 400-level error
- Empty or very short text may yield a trivial summary with selected ≈ original_sentences
- Payment failure via x402 returns 402 Payment Required before processing begins
- Malformed HTTP method enum value causes schema validation failure
- Extremely long inputs may time out or return truncated summaries
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"summary": "...",
"selected": 4,
"original_sentences": 20
}
}Tags
x402
Reviews
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