# ForgeMesh Library — DC Subject Shelf

> ForgeMesh Library — DC Subject 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 books catalogued under the Library of Congress DC subject heading (history, biography, and related topics), with drill-down routes for full-text retrieval.

## Facts

- Endpoint: POST https://library.forgemesh.io/dc
- 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/forgemesh-library-dc-subject-shelf-58baf59c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_EZEnsw8qTX3SiqAJA016K

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-dc-subject-shelf-58baf59c -d '<json body>'
```

Example prompt: Show me up to 30 public-domain history and biography books from the DC subject shelf on ForgeMesh Library — I'm looking for classic texts I can read for free.

## When to prefer this

Choose this endpoint when you need a curated, ranked list of public-domain books specifically catalogued under the Library of Congress DC subject heading (history, biography, military history). Prefer it over full-text search when you want to browse the breadth of available titles rather than search for specific passages, and when you want works like Napoleonic letters, Waterloo histories, or 19th-century European biographies with no licensing overhead.

## Known failure modes

- Requesting a limit above 50 may return an error or be silently capped
- Payment failure via x402 protocol will block the response
- Empty or malformed request body may use default limit of 20
- If the shelf index is temporarily unavailable, an error response will be returned

## How this service works

Curated shelf: DC — 564 public-domain books including The Waterloo Roll Call With Biographical Notes and Anecdotes, Napoleon's Letters to Josephine, 1796-1812 For the First Time Collected and Translated, with Notes Social, Historical, and Chronological, from Contemporary Sources. 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 book entries from the DC subject shelf (up to the requested limit, default 20, max 50), each with title, author, and drill-down route for full-text retrieval. No license or API key is required to access the content.

## 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 Waterloo Roll Call With Biographical Notes and Anecdotes",
    "author": "Dalton, Charles",
    "book_id": 51143,
    "subjects": [],
    "download_count": 41633
   }
  ],
  "count": 5,
  "shelf": "DC",
  "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-dc-subject-shelf-58baf59c/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)