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Works on Claude’s web app, desktop app and mobile app (connectors you add on the web show up on every device). You need a theStacc account and to be the owner or an admin of the project.
1

Open Connectors

In Claude, go to Customize > Connectors, click + Add, then Add custom connector.
2

Add theStacc

Name it theStacc, paste this address and click Add:
3

Sign in with theStacc

Click Connect next to theStacc. A theStacc page opens in your browser. Log in with your usual account.
4

Pick a project and permissions

Choose the one project Claude should work on. Reading and drafting are ticked. Tick Publish approved posts only if you want Claude to publish what you approved.
5

Approve

Click Approve. You are sent back to Claude, connected.
On a Claude Team or Enterprise plan, an organization owner adds the custom connector first (Organization settings > Connectors). Members then click Connect next to it under Customize > Connectors.

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Use it in a chat

Click + at the bottom left of the message box, open Connectors and switch theStacc on. Then try:
  • “What can you do with theStacc?”
  • “Review my content plan and write the next blog.”
  • “Create a LinkedIn post about our new opening hours.”
  • “Draft a Google Business post about our weekend offer.”
Claude asks before running tools that change things. Read-only tools (lists, reports) are marked as such.

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Disconnect

In theStacc, open Content SEO > Settings > Publishing > Agent access, find MCP: Claude and click Revoke. Claude stops working with your project straight away.