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library.forgemesh.io QH Natural History Shelf
x402
library.forgemesh.io QH Natural History Shelf is a paid API for AI agents from library.forgemesh.io, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-13).
Returns a ranked list of up to 50 public-domain natural history books from the QH Library of Congress classification, with drill-down routes for full-text retrieval.
Price / call$0.003
Success—
StatusUnknown
How this service works
Curated shelf: QH — 614 public-domain books including Life and Letters of Charles Darwin — Volume 1, More Letters of Charles Darwin — Volume 1 A Record of His Work in a Series of Hitherto Unpublished Letters, The Natural History of Pliny, Volume 3 (of 6). Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.
Output
A ranked list of up to 50 public-domain books in the QH (natural history) classification, including titles, authors, and drill-down routes that can be used to retrieve the full text of each book.
Example use cases
Researching Darwin's correspondence
“Pull up to 20 books from the QH natural history shelf — I'm specifically looking for Charles Darwin's letters and correspondence available in the public domain.”
Building a reading list of classic naturalism
“Give me the top 50 public-domain books from the natural history QH shelf so I can put together a reading list of classic naturalism texts.”
Finding Pliny's Natural History for citation
“Can you fetch the QH shelf and tell me which volumes of Pliny's Natural History are available there as public-domain texts, with links to read the full text?”
Technical details
Endpoint
POSThttps://library.forgemesh.io/qhWhen to prefer
Choose this endpoint when you need a curated, ranked list of public-domain natural history books (Library of Congress QH class) including Darwin's works and Pliny, and want drill-down routes for full-text access. Prefer it over full-text search when you want to browse the shelf by category rather than query by keyword.
Side effects
- limit parameter exceeds 50 — clamped or rejected
- no books returned if shelf index is temporarily unavailable
- payment not processed — 402 response requiring x402 payment before results are served
- malformed request body returns validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| limit | integer | Max books to return (default 20, max 50) |
Output
Schema · Response
{
"type": "json",
"example": {
"books": [
{
"year": null,
"title": "Life and Letters of Charles Darwin — Volume 1",
"author": "Darwin, Charles",
"book_id": 2087,
"subjects": [],
"download_count": 30219
}
],
"count": 5,
"shelf": "QH",
"coverage": {
"target": 61015,
"indexed": 61015
},
"drill_down": [
"/book-metadata",
"/book-chapter",
"/book-quotes",
"/literature-search"
]
}
}Tags
x402
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