# ForgeMesh Library – Science: Chemistry & Biochemistry Shelf

> ForgeMesh Library – Science: Chemistry & Biochemistry 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 chemistry and biochemistry books with drill-down routes for full-text retrieval.

## Facts

- Endpoint: POST https://library.forgemesh.io/science-chemistry-biochemistry
- 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-science-chemistry-biochemistry-shelf-17a979dd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JN8bfIbT7pAftJyb7VZWx

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-science-chemistry-biochemistry-shelf-17a979dd -d '<json body>'
```

Example prompt: Give me a list of up to 30 public-domain chemistry and biochemistry books from the ForgeMesh library shelf, ranked by relevance.

## When to prefer this

Choose this endpoint when you need a curated, pre-filtered list of public-domain chemistry or biochemistry books specifically — rather than running a broad full-text search across all domains. It is faster than a keyword search for browsing the science shelf and returns drill-down routes enabling direct full-text retrieval. Prefer it over general web search when you need verified public-domain status and structured metadata.

## Known failure modes

- limit parameter exceeds maximum of 50 — server may reject or clamp the value
- network or payment failure via x402 micro-payment protocol results in no response
- shelf may contain fewer than the requested limit if fewer than `limit` books are indexed
- malformed request body returns an error response

## How this service works

Curated shelf: Science - Chemistry/Biochemistry — 345 public-domain books. 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 chemistry and biochemistry books (up to 50, default 20), each entry including title and drill-down routes that can be used to fetch the full text of individual books. No license 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 Sceptical Chymist or Chymico-Physical Doubts & Paradoxes, Touching the Spagyrist's Principles Commonly call'd Hypostatical; As they are wont to be Propos'd and Defended by the Generality of Alchymists. Whereunto is præmis'd Part of another Discourse relating to the same Subject.",
    "author": "Boyle, Robert",
    "book_id": 22914,
    "subjects": [],
    "download_count": 13296
   }
  ],
  "count": 5,
  "shelf": "Science - Chemistry/Biochemistry",
  "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-science-chemistry-biochemistry-shelf-17a979dd/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)