# Foundry ISBN Lookup

> Foundry ISBN Lookup is a paid API for AI agents from minty-sprout.onrender.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-11-01).

Looks up book metadata by ISBN, returning title, authors, publisher, publish date, and page count from Open Library.

## Facts

- Endpoint: POST https://minty-sprout.onrender.com/v1/isbn-lookup?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/foundry-isbn-lookup-2e5cf02e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3ckXvmPVazMLKis6dxbTG

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 foundry-isbn-lookup-2e5cf02e -d '<json body>'
```

Example prompt: Can you look up the book with ISBN 9780140328721 and tell me its title, authors, publisher, and how many pages it has?

## When to prefer this

Use this endpoint when you have an ISBN (10 or 13 digit) and need structured bibliographic metadata — title, authors, publisher, publish date, and page count — without needing full-text search or complex filtering. It is ideal for enriching book records, verifying edition details, or identifying unknown books from barcodes. Prefer this over a general web search when you need clean, structured JSON output directly from a library data source.

## Known failure modes

- ISBN not found in Open Library — returns an empty or null result
- Malformed ISBN input (non-numeric, wrong length) — may return an error or no match
- Very obscure or recently published books may lack complete metadata (missing pages, authors, etc.)
- Network timeout if Open Library API is slow or unavailable

## How this service works

Book lookup by ISBN: title, authors, publisher, date and pages from Open Library. Input: an ISBN.

## Output

A JSON object containing the book's title, subtitle (if any), list of authors, publisher(s), publish date, page count, source ('Open Library'), the Open Library URL, and the queried ISBN.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "string",
   "maxLength": 8000,
   "description": "ISBN-10 or ISBN-13"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "url": "http://openlibrary.org/books/OL7353617M/Fantastic_Mr._Fox",
  "isbn": "9780140328721",
  "pages": 96,
  "title": "Fantastic Mr. Fox",
  "source": "Open Library",
  "authors": [
   "Roald Dahl"
  ],
  "subtitle": null,
  "publishers": [
   "Puffin"
  ],
  "publish_date": "October 1, 1988"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/foundry-isbn-lookup-2e5cf02e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from minty-sprout.onrender.com](https://www.zero.xyz/host/minty-sprout.onrender.com/llms.txt)