# BizIntel API – Open Library Book Lookup

> BizIntel API – Open Library Book Lookup is a paid API for AI agents from bizintel-api.hahavoid0.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Looks up book metadata (title, author, etc.) from the Open Library by ISBN number.

## Facts

- Endpoint: POST https://bizintel-api.hahavoid0.workers.dev/product/open-library
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/bizintel-api-open-library-book-lookup-d5e2997f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7yrC06vIKDbrYdDd63rWQ

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 bizintel-api-open-library-book-lookup-d5e2997f -d '<json body>'
```

Example prompt: Can you look up the book with ISBN 9780140268867 and tell me the title and author?

## When to prefer this

Choose this endpoint when you need quick, cheap bibliographic lookup by ISBN and don't require a full library catalog API integration. Ideal for AI agents enriching product data, reading lists, or book inventory systems. Best when you have a specific ISBN in hand and want title/author without managing API keys or subscriptions — pay-per-call at $0.01 USDC fits low-volume or sporadic lookups.

## Known failure modes

- ISBN not found in Open Library — returns supported:false or low confidence
- Invalid ISBN format (not 10 or 13 digits) — likely validation error or empty result
- Ambiguous or duplicate ISBNs leading to low confidence result
- Open Library upstream unavailability causing timeout or error
- Newly published books not yet indexed returning no results

## How this service works

Resolves book title, author, publication date, and page count from the public Open Library API by ISBN.

## Output

Returns a JSON object with the book's title and author, a supported flag indicating whether the ISBN was found, a confidence level (e.g. 'high'), the data freshness date, any warnings, and a disclaimer about informational use only.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "required": [
      "isbn"
     ],
     "properties": {
      "isbn": {
       "type": "string",
       "description": "10 or 13-digit ISBN book identifier"
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {
   "title": "The Odyssey",
   "author": "Homer"
  },
  "warnings": [],
  "supported": true,
  "confidence": "high",
  "data_as_of": "2026-06",
  "disclaimer": "Informational support only. Not legal, tax, medical, veterinary, or financial advice. Verify with the cited official source or a qualified professional before acting."
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/bizintel-api-open-library-book-lookup-d5e2997f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from bizintel-api.hahavoid0.workers.dev](https://www.zero.xyz/host/bizintel-api.hahavoid0.workers.dev/llms.txt)