How Canvas LMS OAuth 2.0 Authorization Code Flow Works for Developers

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OAuth 2.0 allows third-party applications to access Canvas LMS user data securely without requiring users to share their credentials directly. Canvas implements the Authorization Code Flow, dividing the process into front-channel browser-based steps and back-channel server-to-server communication. During the flow, a user grants consent on the Canvas login page, after which a temporary authorization code is issued to the client application. The client then exchanges this code, along with its credentials, for an access token used to make authorized API requests. Key components involved include the resource owner, client application, authorization server, access token, redirect URI, and defined permission scopes.

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