aid: isbndb
name: ISBNdb
description: ISBNdb is the world's largest book database REST API providing access to metadata for over 110 million books and publications. Search by ISBN (ISBN-10 or ISBN-13), title, author, publisher, or subject to retrieve up to 19 data points per book including cover images, publication dates, descriptions, and real-time pricing. The API supports bulk lookups of up to 1,000 ISBNs per request on eligible plans.
image: https://kinlane-productions.s3.amazonaws.com/apis-json/apis-json-logo.jpg
url: https://raw.githubusercontent.com/api-evangelist/isbndb/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.19'
tags:
  - Books
  - ISBN
  - Publishing
  - Metadata
  - Library
  - Bibliography
apis:
  - aid: isbndb:isbndb-api
    name: ISBNdb API
    description: RESTful API for searching and retrieving book metadata by ISBN, title, author, publisher, and subject from the world's largest book database with 110M+ entries.
    image: https://kinlane-productions.s3.amazonaws.com/apis-json/apis-json-logo.jpg
    humanURL: https://isbndb.com/api-documentation
    baseURL: https://api2.isbndb.com
    tags:
      - Books
      - ISBN
      - Publishing
      - Metadata
      - Search
    properties:
      - type: Documentation
        url: https://isbndb.com/api-documentation
      - type: OpenAPI
        url: https://api2.isbndb.com/doc.json
      - type: Pricing
        url: https://isbndb.com/isbn-database
    contact:
      - FN: ISBNdb Support
        url: https://isbndb.com/faq
        email: ''
common:
  - type: Website
    url: https://isbndb.com
  - type: Documentation
    url: https://isbndb.com/api-documentation
  - type: Pricing
    url: https://isbndb.com/isbn-database
  - type: Blog
    url: https://isbndb.com/blog/
  - type: X
    url: https://x.com/ISBNdb_com
  - type: Plans
    url: plans/isbndb-plans-pricing.yml
  - type: RateLimits
    url: rate-limits/isbndb-rate-limits.yml
  - type: FinOps
    url: finops/isbndb-finops.yml
maintainers:
  - FN: Kin Lane
    email: kin@apievangelist.com