ISBNlib
JSON →ISBNlib is an active Python library (current version 3.10.14) providing a pure-Python solution for extracting, cleaning, transforming, hyphenating, and fetching metadata for ISBNs (International Standard Book Numbers). It offers a straightforward API for various ISBN-related tasks and receives frequent minor updates to its internal data ranges and service integrations.
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API endpoints
full doc /v1/registry/isbnlib
install /v1/registry/isbnlib/install
compatibility /v1/registry/isbnlib/compatibility