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tcs1
Community Participant

LTI 1.3 & LTI Advantage Documentation

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Is there any documentation about using LTI 1.3 / LTI Advantage with Canvas? There's a feature option to turn it on in our beta environment but beyond that it's not clear how to get started.

lti 1.3 #lti advantage

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33 Replies
skriloffn
Community Participant

Peter, could you provide the code and steps you followed for this 1.3 implementation?  Is it the same code as here: https://community.canvaslms.com/thread/24209-hire-an-lti-consultantfreelancer?commentID=107773#comme... 

pklove
Community Champion

No, not the same code.  1.3 is completely different to 1.1/1.2.

In terms of steps etc., we have a live test tool that shows the process and what is exchanged, but that probably won't be made public until Canvas move 1.3 out of beta and into test.

pklove
Community Champion

This covers configuration at the Canvas end, but it doesn't help with configuration at the tool end.

For example, where do we find Canvas documentation that has things like the JWK set URL?  People have managed to find or guess some of these, but where are they officially specified?

For now until we find a good home for developer focused documentation, please refer to this document.

pklove
Community Champion

Thanks!  That's what we needed.

Why cannot the basics go under External Tools at Canvas LMS REST API Documentation 

All we really need to get started is the JWK URL (https://canvas.instructure.com/api/lti/security/jwks), the authorize endpoint (https://canvas.instructure.com/api/lti/authorize_redirect) and to know that to call services we use OAuth2 as per the Canvas REST API.

brett_g_dalton
Community Participant

Peter, thats the API documentation for listing and updating  tools via the API  so it would be confusing.  I think a dedicated part somewhere else in those docs to LTI specifics including placement would be great however.

I meant the "External Tools" section --- bold heading near the end of the page, not the alphabetically-in-order "External Tools" link to "External Tools API".

matthew_buckett
Community Contributor

With the latest documentation update the standard documentation on https://api.instructure.com has been updated to reference LTI 1.3.

There is a nice overview of LTI 1.3 for developers on Configuring LTI Advantage Tools - Canvas LMS REST API Documentation 

Has anyone got any examples of code for this, especially in PHP?

We're working on an LTI at the moment that includes passback, but have been having documentation issues working out how to do it in LTI 1.1. Now we're on the cusp of getting them resolved (waiting for a response to a support ticket, to check why the XML I sent it failed as the OAuth bit seems to be working well at least not erroring), I read we should be considering doing passback differently.

As a quick fudge, we used an API key for our site to pass the grade back (as we get the course, assignment and user IDs) and that works. But the plan is to roll this LTI out to other institutions so if there's a more universal API-key-free way of doing this I think we should be implementing it before it gets that far.