How to Integrate Lovable with Canvas LMS

Canvas API access tokens are personal tokens that grant API access with the same permissions as your Canvas account. For a student app, a student-level token can read enrollments, grades, and assignments for that student. For an admin or reporting tool, an admin token provides broader access. To generate a token, log in to your Canvas instance. Click your profile icon in the top-right corner, then click 'Profile'. In the left sidebar, click 'Settings'. Scroll down to the 'Approved Integrations' section at the bottom of the page. Click '+ New Access Token'. Give it a name like 'Lovable App Integration' and optionally set an expiry date. Canvas generates a token and shows it once — copy it immediately to a safe location before closing the dialog. This token cannot be retrieved again; if you lose it, you must regenerate. Important security consideration: a personal access token has all the permissions of the account that created it. For production applications with many users, personal tokens are not the right approach — you should use Canvas's OAuth 2.0 flow so each user authenticates with their own account. However, for building and testing a custom tool, a personal token is the fastest path. For admin reporting tools where a single service account runs the queries, a service account token is the appropriate approach. Also note your Canvas instance URL. It will be something like https://yourinstitution.instructure.com or https://canvas.instructure.com if you use Instructure's hosted service. You will use this as the base URL for all Canvas API calls.

Store your Canvas API credentials in Lovable's Cloud Secrets panel so they are encrypted at rest and only accessible from Edge Functions. Canvas access tokens grant access to all courses and data your account can see — they must be treated with the same care as a password and never included in frontend code or Git commits. Click the '+' icon next to the Preview label in the Lovable editor to open the Cloud panel. Click the 'Secrets' tab. Add the following secrets: - Name: CANVAS_API_URL — Value: your Canvas instance's base URL followed by /api/v1 (e.g., https://yourschool.instructure.com/api/v1). Include the /api/v1 path — all Canvas REST API endpoints are rooted here. - Name: CANVAS_API_TOKEN — Value: the access token you generated in Step 1 (the long alphanumeric string) For applications where individual users authenticate with their own Canvas accounts via OAuth 2.0, you would also store: - Name: CANVAS_CLIENT_ID — Value: your Canvas Developer Key ID - Name: CANVAS_CLIENT_SECRET — Value: your Canvas Developer Key secret For the personal token approach (this guide), only CANVAS_API_URL and CANVAS_API_TOKEN are needed. The Edge Functions will include the token as an Authorization header on every Canvas API request. After adding the secrets, verify they appear in the Secrets list with masked values. The CANVAS_API_URL should end in /api/v1 — if you include a trailing slash, the URL construction in Edge Functions must account for this.

The core Edge Function for Canvas integration is a flexible proxy that accepts a Canvas API endpoint path and optional query parameters, appends the authorization header, and returns the Canvas API response. Having a single general-purpose proxy function is useful during development because you can explore Canvas API endpoints without deploying a new Edge Function for each one. For production applications, create specific Edge Functions for each use case (get-courses, get-assignments, get-grades) that validate inputs, limit the data returned, and document exactly which Canvas API endpoints they use. This is more maintainable and more secure than a general-purpose proxy. The general-purpose proxy below is appropriate for prototyping. Notice the allowlist of permitted paths — this prevents the proxy from being used to access Canvas API endpoints outside your intended scope if the Edge Function URL is ever discovered. Canvas API responses use pagination: large result sets are split across multiple pages, with navigation links in the response Link header. The Edge Function handles the first page by default. For fetching all items across multiple pages, implement a follow-links loop or increase the per_page parameter (Canvas allows up to 100 items per page).

1// supabase/functions/canvas-api/index.ts
2const corsHeaders = {
3  'Access-Control-Allow-Origin': '*',
4  'Access-Control-Allow-Headers': 'authorization, x-client-info, apikey, content-type',
5};
6
7// Allowlist of Canvas API paths this proxy will serve
8const ALLOWED_PATH_PREFIXES = [
9  '/courses',
10  '/users/self',
11  '/users/self/courses',
12  '/users/self/enrollments',
13  '/calendar_events',
14  '/planner/items',
15];
16
17Deno.serve(async (req) => {
18  if (req.method === 'OPTIONS') return new Response('ok', { headers: corsHeaders });
19
20  try {
21    const { path, params = {} } = await req.json();
22
23    const allowed = ALLOWED_PATH_PREFIXES.some(prefix => path.startsWith(prefix));
24    if (!allowed) {
25      return new Response(JSON.stringify({ error: `API path '${path}' is not allowed` }), {
26        status: 400,
27        headers: { ...corsHeaders, 'Content-Type': 'application/json' },
28      });
29    }
30
31    const baseUrl = Deno.env.get('CANVAS_API_URL')!;
32    const token = Deno.env.get('CANVAS_API_TOKEN')!;
33
34    const queryString = new URLSearchParams({
35      per_page: '50',
36      ...params,
37    }).toString();
38
39    const url = `${baseUrl}${path}?${queryString}`;
40
41    const response = await fetch(url, {
42      headers: {
43        Authorization: `Bearer ${token}`,
44        'Content-Type': 'application/json',
45      },
46    });
47
48    if (!response.ok) {
49      const errorText = await response.text();
50      console.error(`Canvas API error (${response.status}):`, errorText);
51      return new Response(JSON.stringify({ error: `Canvas API error: ${response.status}` }), {
52        status: response.status,
53        headers: { ...corsHeaders, 'Content-Type': 'application/json' },
54      });
55    }
56
57    const data = await response.json();
58    // Include pagination link header for frontend to handle multi-page results
59    const linkHeader = response.headers.get('Link') || '';
60    return new Response(JSON.stringify({ data, linkHeader }), {
61      headers: { ...corsHeaders, 'Content-Type': 'application/json' },
62    });
63  } catch (error) {
64    console.error('Canvas proxy error:', error);
65    return new Response(JSON.stringify({ error: String(error) }), {
66      status: 500,
67      headers: { ...corsHeaders, 'Content-Type': 'application/json' },
68    });
69  }
70});

For a complete learning dashboard, you need to fetch not just courses but also assignments, submissions, and grades. The Canvas API provides separate endpoints for each, and a well-designed Lovable app typically calls multiple endpoints and combines the data in a single dashboard view. Rather than making three separate Edge Function calls from the frontend, create a canvas-dashboard Edge Function that calls multiple Canvas endpoints in parallel using Promise.all and returns a combined response. This reduces the number of network round trips and improves dashboard load time. The combined endpoint below fetches the user's active enrollments (which include grade summaries), upcoming assignments from the planner, and a list of active courses — all in parallel. The frontend receives everything it needs for the dashboard in a single Edge Function call. For instructor tools that need access to all students' submissions for an assignment, use the Canvas API's /courses/{id}/assignments/{id}/submissions endpoint. This requires instructor-level access and returns submission status, submitted_at timestamps, scores, and attached files for all enrolled students.

1// supabase/functions/canvas-dashboard/index.ts
2const corsHeaders = {
3  'Access-Control-Allow-Origin': '*',
4  'Access-Control-Allow-Headers': 'authorization, x-client-info, apikey, content-type',
5};
6
7async function canvasFetch(baseUrl: string, token: string, path: string, params: Record<string, string> = {}) {
8  const qs = new URLSearchParams({ per_page: '50', ...params }).toString();
9  const res = await fetch(`${baseUrl}${path}?${qs}`, {
10    headers: { Authorization: `Bearer ${token}` },
11  });
12  if (!res.ok) throw new Error(`Canvas ${path} returned ${res.status}`);
13  return res.json();
14}
15
16Deno.serve(async (req) => {
17  if (req.method === 'OPTIONS') return new Response('ok', { headers: corsHeaders });
18
19  try {
20    const baseUrl = Deno.env.get('CANVAS_API_URL')!;
21    const token = Deno.env.get('CANVAS_API_TOKEN')!;
22
23    const today = new Date().toISOString().split('T')[0];
24    const twoWeeks = new Date(Date.now() + 14 * 24 * 60 * 60 * 1000).toISOString().split('T')[0];
25
26    const [enrollments, plannerItems, courses] = await Promise.all([
27      canvasFetch(baseUrl, token, '/users/self/enrollments', { state: 'active', include: 'grades' }),
28      canvasFetch(baseUrl, token, '/planner/items', { start_date: today, end_date: twoWeeks }),
29      canvasFetch(baseUrl, token, '/users/self/courses', { enrollment_state: 'active', include: 'total_scores' }),
30    ]);
31
32    return new Response(JSON.stringify({ enrollments, plannerItems, courses }), {
33      headers: { ...corsHeaders, 'Content-Type': 'application/json' },
34    });
35  } catch (error) {
36    console.error('Canvas dashboard error:', error);
37    return new Response(JSON.stringify({ error: String(error) }), {
38      status: 500,
39      headers: { ...corsHeaders, 'Content-Type': 'application/json' },
40    });
41  }
42});

With the Canvas API Edge Functions deployed, build the Lovable frontend components that display the data. Open Lovable's chat and describe the dashboard layout you want. Lovable will generate React components that call your canvas-dashboard Edge Function and render the results. For the student dashboard, a typical layout includes: a header with the student's name from the Canvas user object, a row of course cards each showing the course name and current grade, and a section listing upcoming assignments sorted by due date. Each assignment card can show the assignment name, course name, points possible, and days until due with color coding (green for more than 7 days, yellow for 3-7 days, red for less than 3 days). For LTI-based embedding inside Canvas — where your Lovable app appears as a native tool within a Canvas course — the setup requires additional steps beyond what this guide covers fully. At a high level: you register your Lovable app's deployed URL as an External Tool in Canvas (via Settings → Apps → View App Configurations → +App). Canvas will launch your app via an HTTP POST with an LTI launch payload containing the user's Canvas ID, course context, and assignment context. Your Lovable app receives this payload in an Edge Function and uses it to identify the student and the Canvas context without requiring them to log in separately. For institutions implementing full LTI 1.3 (which is required for new integrations), the configuration involves public/private key pairs and a Canvas developer key registration. RapidDev's team has experience implementing LTI 1.3 integrations for Lovable apps deployed inside Canvas, Moodle, and Blackboard LMS platforms.