# library.forgemesh.io QK Shelf — Botany & Natural History

> library.forgemesh.io QK Shelf — Botany & Natural History 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 botany and natural history books in the QK Dewey class, with drill-down routes for full-text retrieval.

## Facts

- Endpoint: POST https://library.forgemesh.io/qk
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/library-forgemesh-io-qk-shelf-botany-natural-history-7f312245
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JBe6Ng6xLCPs8-oaCWQ6j

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-qk-shelf-botany-natural-history-7f312245 -d '<json body>'
```

Example prompt: Show me up to 30 public-domain botany and natural history books from the QK shelf — I'm looking for works on mushrooms, fungi, and plant science I can read for free.

## When to prefer this

Choose this endpoint when you need to browse or list public-domain botany, mycology, or natural history books specifically in the QK Dewey class, particularly when you want a curated ranked shelf rather than free-text search. Prefer it over the full-text search endpoint when you want discovery of available titles rather than passage-level retrieval.

## Known failure modes

- limit exceeds 50 returns a validation error
- network timeout if the library index is temporarily unavailable
- empty result list if the shelf has no indexed entries matching the QK class
- payment failure via x402 if USDC balance is insufficient

## How this service works

Curated shelf: QK — 200 public-domain books including Letters of Asa Gray; Vol. 2, Studies of American Fungi. Mushrooms, Edible, Poisonous, etc., Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants. 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 QK (botany/natural history) classification, each with title, author, and a drill-down route that can be used to retrieve the full text of that specific book.

## 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": "Letters of Asa Gray; Vol. 2",
    "author": "Gray, Asa",
    "book_id": 55987,
    "subjects": [],
    "download_count": 20251
   }
  ],
  "count": 5,
  "shelf": "QK",
  "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-qk-shelf-botany-natural-history-7f312245/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)