Grok Bot Notion plugin OAuth Invalid redirect_uri

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1

Where does the bug appear (feature/product)?

Grok Bot

Describe the Bug

Notion plugin is installed in Grok Bot Plugins but never shows Connected. Connecting opens OAuth and fails with: Invalid redirect_uri for OAuth client. Supabase, Tavily, and Gmail plugins connect successfully. Cursor IDE Notion via Internal Integration works. Reinstalling Notion plugin does not help.

Steps to Reproduce

  1. Open Grok Bot Plugins
  2. Open Notion plugin (status Added)
  3. Click Connect
  4. OAuth window shows Invalid redirect_uri for OAuth client
  5. Notion remains not Connected

Expected Behavior

OAuth should succeed and Notion should show Connected so Grok Bot can read shared Notion pages. Or document how to reuse the Cursor IDE Notion connection inside Grok Bot.

Operating System

MacOS

Version Information

Grok Bot Notion marketplace plugin on macOS. Exact About panel version available on request.

For AI issues: which model did you use?

Grok Bot

Additional Information

Also submitted via in-app Give Feedback. Blocks weekly Notion review workflow for a Grok Bot team channel. Workaround is manual copy from Cursor.

Does this stop you from using Cursor

No - Cursor works, but with this issue

7

Hey @masaharu ,

This isn’t intended behavior, and it isn’t anything you misconfigured. Your Notion sign-in is stored against your account rather than the plugin, so reinstalling won’t clear it and a plain retry just reuses the same stored sign-in.

Could you try re-authenticating the Notion plugin (the reconnect / re-authenticate action, not just Connect/retry)? That clears the stored Notion sign-in and starts a fresh one, which is what gets past this. If it still lands on the same error, it’s on our side - this is an issue we’re tracking, and I’ll follow up here once there’s an update.

On your other question: the Notion internal-integration setup from the Cursor IDE can’t be reused in Grok Bot - Grok Bot goes through Notion’s own sign-in, which is the part failing here.

8

Thanks Mohit.

I tried Re-authenticate / reconnect on the Notion plugin (not Connect/retry).

Result: SUCCESS — Notion now shows Connected.

Appreciate the clear guidance.