Canva - Connection to Canva failed. Missing required tokens.

Support
1

In Mindstudio integrations I’ve added the Client ID and Secret Key from Canva and I’m getting a connected to Canva successfully message.

When I try to run my agent it’s not connecting to Canva to run the OAuth flow test.

When I visit this URL it’s giving error tokens not valid https://app.mindstudio.ai/integrations/oauth/redeem/canva

Connection to Canva failed. Missing required tokens.

URL of my agent: https://app.mindstudio.ai/agents/512a0e49-5593-4f28-8b36-a133b749c35d/edit

Screenshot 2025-11-30 at 12.22.48
Screenshot 2025-11-30 at 12.22.481414×862 102 KB

2

This is a follow-up to my original ticket regarding the Canva integration failure. I have performed extensive troubleshooting and believe the issue is internal to the platform’s handling of the PKCE flow.

The problem is isolated to the final Token Exchange step.

Troubleshooting Summary

  • Credentials Check: Client ID and Client Secret have been triple-checked and verified. Upon configuration save, the status briefly shows “Connected to Canva successfully”.

  • Redirect URI Check: The Redirect URI is correctly registered in the Canva Developer Portal. The authorization step completes, and I am successfully redirected back to Mindstudio.

  • Persistent Error: Despite the correct setup, the integration status remains “Connection to Canva failed. Missing required tokens.”

  • Test Flow Result: After authorizing on Canva, I am redirected to the Mindstudio redeem URL with the error message: “tokens not valid”.

Technical Diagnosis

This pattern of failure indicates that the flow works up to the point of redirection, but fails during the secure, server-to-server exchange of the authorization code for the final access token.

Given that this flow requires PKCE (Proof Key for Code Exchange):

  • Hypothesis: The platform is failing to correctly utilize the temporary secret (code_verifier) that corresponds to the initial code_challenge sent to Canva.

  • Likely Cause: The code_verifier is either not being generated, stored, or correctly included in the final API call to Canva’s token endpoint (POST /api/oauth/token).

Screenshot 2025-11-30 at 14.11.01
Screenshot 2025-11-30 at 14.11.011920×1200 156 KB

3

Hi @ramelton,

Thanks for the post!

Please make sure the read and write scopes are enabled in Canva so your MindStudio Agent can use the connector:

image
image694×989 41.6 KB

4

Hi Alex, I was able now to submit my App to Canva for review that was the problem. Canva scopes were not configured correctly, thank you.

5

Hi @ramelton,

Glad to hear it’s fixed!