ClickUp & N8n Connection Error

Questions
1

Describe the problem/error/question

I'm trying to connect ClickUp to my n8n Cloud workspace using OAuth2, but I'm running into some issues that I can't seem to resolve on my end.

What is the error message (if any)?

When I attempt to create an OAuth2 connection to ClickUp in n8n, I'm not even being prompted to enter a Client ID or Client Secret like I've seen in other demonstrations of setting up this connection. Instead, I only see a "Connect using OAuth2 (recommended)" button, and when I click it, I get OAuth2_37 and OAuth2_07 errors.

Please share your workflow

(Select the nodes on your canvas and use the keyboard shortcuts CMD+C/CTRL+C and CMD+V/CTRL+V to copy and paste the workflow.)

Share the output returned by the last node

Information on your n8n setup

  • n8n version:
  • Database (default: SQLite):
  • n8n EXECUTIONS_PROCESS setting (default: own, main):
  • Running n8n via (Docker, npm, n8n cloud, desktop app):
  • Operating system:
2

Hi Michael! The issue you’re experiencing with ClickUp OAuth2 in n8n Cloud is likely because n8n Cloud handles OAuth2 credentials differently than self-hosted instances. Instead of manually entering Client ID/Secret, n8n Cloud uses pre-configured OAuth2 apps.

Here’s what to try:

• Make sure you’re logged into your n8n Cloud account when attempting the connection

• Clear your browser cache and cookies, then try the OAuth2 connection again

• If you continue getting OAuth2_37 and OAuth2_07 errors, try using a different browser or incognito mode

• As an alternative, you can create a ClickUp Personal API token in your ClickUp settings and use the “ClickUp API” credential type instead of OAuth2

If the OAuth2 errors persist, the Personal API token approach is often more reliable and easier to set up for ClickUp integrations.