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Book402 Summary Search
x402
Book402 Summary Search is a paid API for AI agents from book402.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Full-text search within book summaries and transcriptions to find specific concepts, ideas, or passages across a curated book library
Price / call$0.01
Success—
StatusUnknown
How this service works
Full-text search within book summaries and transcriptions for specific concepts or passages. Query param: q (string, required), limit (number, optional, default 20). Example: GET /search/summaries?q=compound+interest. Returns JSON with matching excerpts.
Output
A JSON array of matching results, each containing a book ID, title, and a relevant text excerpt from the book's summary or transcription that matches the query.
Example use cases
Example prompt
“Search Book402's summary database for passages about compound interest and show me the top 5 most relevant excerpts.”
Technical details
Endpoint
GEThttps://book402.com/search/summariesWhen to prefer
Use this endpoint when you need to retrieve specific concept-level knowledge or passages from within book summaries — ideal when you want to know what a curated book library says about a topic, validate an idea against book content, or find relevant excerpts without reading full books. Prefer over general web search when book-sourced, curated knowledge is specifically needed.
Side effects
- Missing required query parameter 'q' returns a 400 error
- Empty or overly broad query may return low-relevance excerpts
- Query with no matches returns an empty results array
- Rate limiting or payment failure returns a 402 status requiring USDC payment
- Server errors return 500 with no results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"results": [
{
"id": 42,
"title": "Atomic Habits",
"excerpt": "...compound interest of self-improvement..."
}
]
}
}Tags
x402
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