# library.forgemesh.io SF Shelf

> library.forgemesh.io SF 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 science fiction books with drill-down routes for full-text retrieval

## Facts

- Endpoint: POST https://library.forgemesh.io/sf
- 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-sf-shelf-45c4953e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zovLRDgytg4Q8yAKiNiW_

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-sf-shelf-45c4953e -d '<json body>'
```

Example prompt: Show me up to 30 public-domain science fiction books from the library.forgemesh.io SF shelf so I can pick something to read.

## When to prefer this

Choose this endpoint when you need a curated, ranked catalog of public-domain science fiction books with links for full-text access, especially when no API key or license is needed and you want a ready-made SF shelf rather than running a free-text search across all genres.

## Known failure modes

- Requesting more than 50 books returns only the maximum of 50 without an error
- Invalid limit value (non-integer or negative) may return a 400 error
- Service unavailability returns a 5xx error
- Payment not processed (x402) blocks access until USDC fee is fulfilled

## How this service works

Curated shelf: SF — 238 public-domain books including The Horsewoman: A Practical Guide to Side-Saddle Riding, 2nd. Ed., Cattle and Their Diseases Embracing Their History and Breeds, Crossing and Breeding, and Feeding and Management; with the Diseases to Which They Are Subject, and the Remedies Best Adapted to Their Cure, Special Report on Diseases of the Horse. 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 science fiction book titles (default 20), each accompanied by drill-down routes that allow full-text retrieval of the book content. No licensing or API key is required to access the returned texts.

## 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": "The Horsewoman: A Practical Guide to Side-Saddle Riding, 2nd. Ed.",
    "author": "Hayes, Alice M.",
    "book_id": 26318,
    "subjects": [],
    "download_count": 14583
   }
  ],
  "count": 5,
  "shelf": "SF",
  "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-sf-shelf-45c4953e/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)