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Looks like it's open source [0]. If they have a clean API it might be doable without scraping.

[0] https://github.com/instructure/canvas-lms

The API is pretty comprehensive, and is growing daily. With the exception of some legacy features, all of the web app's UI is built on top of it, as are the mobile apps.

https://canvas.instructure.com/doc/api/index.html

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