Hi! I'm not sure how you want to integrate Sage and Canvas. You can certainly embed any Sage link into a normal Canvas page, either by using the URL functionality or embedding it in a page:
If you want to embed it as an external tool in an assignment, that would take more work, and I'm not sure exactly what you would want to do with that anyway that would be different than just embedding a link in an assignment's text.
Finally, you may want to embed a Jupyter notebook or a CoCalc thing somehow; I don't doubt that's possible, but in that case you would be better off asking on their lists, as David suggests. Good luck!