REST Countries
Country data via REST.
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About Open Library
The Internet Archive's Open Library catalogs millions of books with open APIs for search, covers, and metadata — plus controlled digital lending.
Key features
- Books, covers, and author APIs
- Full-text search
- Lending integration
Pros
- Rich book metadata for free
- Backed by the Internet Archive
Cons
- Data quality is crowd-sourced
- API docs are scattered
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