I can. To put it simply: if you don't trust me, don't use this. Canvas access tokens allow access to everything you can see through Canvas (plus some extra metadata). It isn't possible to tweak permissions without help from someone at the district.
You can run Miyagi on your own server if you'd like to. Or you could always just use Canvas.
Technical limitations of Canvas. I'm planning on implementing server-side caching to make it faster, whenever I find the time...
miyagi is free software made by volunteer(s) - source code - agplv3
not affiliated with or endorsed by instructure