# library.forgemesh.io QL Shelf — Zoology & Natural History Books

> library.forgemesh.io QL Shelf — Zoology & Natural History Books is a paid API for AI agents from library.forgemesh.io, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-16).

Returns a ranked list of up to 664 public-domain books from the QL (Zoology/Natural History) Library of Congress classification, with drill-down routes for full-text retrieval.

## Facts

- Endpoint: POST https://library.forgemesh.io/ql
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/library-forgemesh-io-ql-shelf-zoology-natural-history-books-67efea55
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rZJcdXzZ9uypwuXa20vCV

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability library-forgemesh-io-ql-shelf-zoology-natural-history-books-67efea55 -d '<json body>'
```

Example prompt: Can you show me up to 30 public-domain books from the natural history and zoology shelf — things like Audubon, animal anecdotes, that kind of classic naturalist writing?

## When to prefer this

Choose this endpoint when you need a curated, ranked list of public-domain zoology and natural history books (QL Library of Congress classification) without any API key or licensing overhead. It is the right choice for browsing or seeding a reading list in the natural history domain, as opposed to full-text search or drilling into a specific book's content.

## Known failure modes

- limit parameter exceeds 50 — server may cap or return an error
- payment not processed (x402 protocol failure) — no results returned
- network timeout for large result sets
- empty or malformed request body — falls back to default limit of 20

## How this service works

Curated shelf: QL — 664 public-domain books including Audubon the Naturalist: A History of His Life and Time. Vol. 2 (of 2), Anecdotes of Dogs, Anecdotes of the Habits and Instinct of Animals. Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.

## Output

A ranked list of public-domain books from the QL (zoology/natural history) Library of Congress shelf, including titles, authors, and drill-down routes that can be followed to retrieve full text. Up to 50 books returned per call (default 20).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "integer",
   "description": "Max books to return (default 20, max 50)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "books": [
   {
    "year": null,
    "title": "Audubon the Naturalist: A History of His Life and Time. Vol. 2 (of 2)",
    "author": "Herrick, Francis Hobart",
    "book_id": 58984,
    "subjects": [],
    "download_count": 21164
   }
  ],
  "count": 5,
  "shelf": "QL",
  "coverage": {
   "target": 61015,
   "indexed": 61015
  },
  "drill_down": [
   "/book-metadata",
   "/book-chapter",
   "/book-quotes",
   "/literature-search"
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/library-forgemesh-io-ql-shelf-zoology-natural-history-books-67efea55/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from library.forgemesh.io](https://www.zero.xyz/host/library.forgemesh.io/llms.txt)