APISpec

APISpec is a pluggable Python library designed for generating API specifications. It primarily supports the OpenAPI Specification (formerly known as the Swagger specification), enabling developers to programmatically define their API's structure, endpoints, and data models. It is framework-agnostic and offers built-in integration capabilities, notably with Marshmallow. The library maintains an active development status, with frequent patch and minor releases, and new major versions typically released on an annual or bi-annual cadence.