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API documentation has been published for specific APIs on request from the product or engineering teams. The documentation is not regularly maintained.
Resources
Documenting APIs: A wiki page that describes current and former documentation methods for edX APIs.
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/wiki/spaces/DOC/pages/108659218: Wiki page of questions for Peter Desjardins, who was maintaining our API documentation before his departure in September. The first item is There are several items about API documentation.
Tools
API documentation tools have historically used .rst files, Python docstrings together with the Sphinx autodoc extension, GitHub, and ReadTheDocs. For more information, see Documenting APIs.