# Library Forgemesh Science & Nature Shelf

> Library Forgemesh Science & Nature Shelf is a paid API for AI agents from library.forgemesh.io, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).

Returns a curated, popularity-ranked list of public-domain science and natural-history books with titles, authors, years, IDs, and drill-down routes for full-text retrieval.

## Facts

- Endpoint: POST https://library.forgemesh.io/science-and-nature
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/library-forgemesh-science-nature-shelf-6889c5fe
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bbI1ZVpmEyzRUaH8GalkC

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-science-nature-shelf-6889c5fe -d '<json body>'
```

Example prompt: Show me up to 30 of the most historically popular public-domain science and natural-history books from the Forgemesh library, including their titles, authors, and IDs so I can dig into the full text.

## When to prefer this

Choose this endpoint when you need a ranked, curated list of public-domain science or natural-history titles with IDs ready for downstream full-text retrieval — particularly when no API key is available and cost must be minimal. Prefer it over general web search when you want structured bibliographic metadata (title, author, year, book_id) rather than raw search results. Not suitable if you need fiction, poetry, drama, or history texts (use the sibling shelves), or if you need semantic search within a specific book's text.

## Known failure modes

- Requesting a limit above 50 may be capped or return an error
- Empty or malformed POST body may cause a parsing error
- Service may return fewer results than requested if the corpus is smaller than the requested limit
- Network or payment-processing failures may result in non-2xx HTTP errors

## How this service works

Curated shelf of public-domain science and natural-history works, ranked by historical popularity. Returns title, author, year, book_id, and drill-down routes for full-text retrieval. No license, no API key required. This is a small, niche shelf within the corpus.

## Output

A ranked list of up to 50 public-domain science and natural-history books, each containing the title, author name, publication year, a unique book_id, and route paths for retrieving the full text of that 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": "2000",
    "title": "On the Origin of Species",
    "author": "Darwin, Charles, 1809-1882",
    "book_id": 2009,
    "subjects": [
     "Evolution (Biology)",
     "Natural selection"
    ],
    "download_count": 4000
   }
  ],
  "count": 3,
  "shelf": "Science & Nature",
  "coverage": {
   "target": 1000,
   "indexed": 865
  },
  "drill_down": [
   "/book-metadata",
   "/book-chapter",
   "/book-quotes",
   "/literature-search"
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/library-forgemesh-science-nature-shelf-6889c5fe/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)