# library.forgemesh.io Science-Biology Shelf

> library.forgemesh.io Science-Biology 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 1364 public-domain biology and natural science books with drill-down routes for full-text retrieval

## Facts

- Endpoint: POST https://library.forgemesh.io/science-biology
- 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-science-biology-shelf-30dbda48
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5pFlYdgSmpnAB3JPw9446

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-science-biology-shelf-30dbda48 -d '<json body>'
```

Example prompt: Show me up to 30 public-domain biology and natural science books from the ForgemMesh library shelf — I'm especially interested in classic works like Darwin's writings or Pliny's Natural History.

## When to prefer this

Choose this endpoint when you need a curated, ranked browse of classic public-domain biology and natural science books — particularly when you want to discover titles like Darwin's letters or Pliny's Natural History without keyword search. Use the full-text search sibling endpoint instead if you have a specific passage or topic query rather than wanting a shelf-browse.

## Known failure modes

- Exceeding the max limit of 50 returns an error or is clamped to 50
- Payment of $0.003 USDC not completed via x402 results in 402 Payment Required
- Invalid input schema (non-integer limit) causes a validation error
- Service unavailability returns a 5xx error with no book data

## How this service works

Curated shelf: Science - Biology — 1364 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of Charles Darwin — Volume 1, More Letters of Charles Darwin — Volume 1 A Record of His Work in a Series of Hitherto Unpublished Letters, The Natural History of Pliny, Volume 3 (of 6).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 public-domain biology and natural science books (up to 50 per call, default 20), each with metadata and drill-down routes that enable full-text retrieval of the selected work. Titles include works like Life and Letters of Charles Darwin, More Letters of Charles Darwin, and The Natural History of Pliny.

## 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": "Life and Letters of Charles Darwin — Volume 1",
    "author": "Darwin, Charles",
    "book_id": 2087,
    "subjects": [],
    "download_count": 30219
   }
  ],
  "count": 5,
  "shelf": "Science - Biology",
  "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-science-biology-shelf-30dbda48/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)