# ForgeMesh Library — QE (Earth Sciences) Shelf

> ForgeMesh Library — QE (Earth Sciences) Shelf is a paid API for AI agents from library.forgemesh.io, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-16).

Returns a ranked list of up to 50 public-domain books in the QE (geology/earth sciences) subject classification, with drill-down routes for full-text retrieval.

## Facts

- Endpoint: POST https://library.forgemesh.io/qe
- 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/forgemesh-library-qe-earth-sciences-shelf-31f17703
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9U5kr1Wpvn45Apa6ydl6p

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 forgemesh-library-qe-earth-sciences-shelf-31f17703 -d '<json body>'
```

Example prompt: Show me up to 30 public-domain books on geology and earth sciences from the ForgeMesh library's QE shelf — I'm looking for classics on rocks, minerals, and earthquakes.

## When to prefer this

Use this endpoint when you need a curated, ranked list of public-domain earth science and geology books (QE Library of Congress classification), including topics like seismology, mineralogy, and petrology. Prefer it over full-text search when you want to browse the entire geology shelf rather than search for specific passages. It requires no API key and costs only $0.003 USDC per call.

## Known failure modes

- Limit parameter exceeds 50 — likely clamped or returns an error
- Limit set to 0 or negative — may return empty list or validation error
- Network or payment failure (x402 micropayment not processed) — call will not complete
- No books available in shelf — unlikely but possible if corpus changes

## How this service works

Curated shelf: QE — 168 public-domain books including A Study of Recent Earthquakes, The chemistry, properties and tests of precious stones, Field book of common rocks and minerals : $b for identifying the rocks and minerals of the United States and interpreting their origins and meanings. 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 in the QE (earth sciences / geology) subject category, including titles such as 'A Study of Recent Earthquakes', 'The chemistry, properties and tests of precious stones', and 'Field book of common rocks and minerals'. Each entry includes drill-down routes for full-text retrieval. Results are capped at the requested limit (default 20, max 50).

## 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": "A Study of Recent Earthquakes",
    "author": "Davison, Charles",
    "book_id": 25062,
    "subjects": [],
    "download_count": 10172
   }
  ],
  "count": 5,
  "shelf": "QE",
  "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/forgemesh-library-qe-earth-sciences-shelf-31f17703/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)