The best public APIs for Metadata

British National Bibliography Data

Accessing high-quality cultural heritage data

CalAPI

Lightweight Calendar & Events from CalAPI

Creative Commons API

Reclaim the Creative Commons

CrossRef API

Data for the research, publishing, and academic communities.

Discogs API

The music database for everyone!

GovData Metadata Catalog API

The API for structured and standardized access to metadata for numerous German Federal Government websites.

IGDB API

The game industry’s most comprehensive API: In-Depth Video Game Data & Metadata

LinkPreview API

Generate rich link previews

Marker API

The most universal API to mark, create, search and edit content around the web.

Penguin Random House Book API

Unlock the power of literature with the Penguin Random House Book API

Podcast Index API

The home of all things podcasting

Telize

Instant Geolocation & IP Lookup

TheDogAPI

Making dog lovers' lives easier!

UK Parliament API

Unlock Publicly Available Parliamentary Data

Watchmode API

Movies and TV Shows API for streaming services and media libraries

ccdb.hemiola.com

The High Performance Metadata Register

iTunes Search API

Powerful search capabilities for the App Store, Apple Music, Apple Podcasts, and iTunes Store