Cursor Supabase MCP stopped working

Bug Reports
1

Describe the Bug

Whenever I ask it to query the database it says it can’t and tries to figure all types of stuff out instead.
The server is live, the connection is there (green)
If I tell it directly to use the MCP server it says:
I don’t have access to an MCP (Model Context Protocol) server or any Supabase MCP tools in my current environment. The tools available to me are limited to file system operations, code searching, and web search within your project workspace.

If you have a Supabase MCP server set up that you’d like me to use, you would need to ensure it’s properly configured in your environment and that I have the appropriate tool definitions to interact with it. Currently, I can only see these tools:

  • codebase_search - for semantic code searching
  • read_file - for reading file contents
  • list_dir - for listing directory contents
  • grep_search - for regex pattern searching
  • file_search - for fuzzy file path searching
  • web_search - for web searches
  • update_memory - for managing conversation memory

To get the actual database schema, you would need to either:

  1. Run the Supabase CLI commands I mentioned earlier in your terminal
  2. Query your database directly through the Supabase dashboard
  3. Set up and configure a Supabase MCP server that I could access

The schema information I provided earlier from your TypeScript definitions should be accurate, but I understand you want to verify it against the actual database structure.

Steps to Reproduce

Add supabase mcp to .cursor/mcp.json and hope it doesn’t happen to you.
I restarted Cursor several times.

I have another issue, my very simple rules keep refreshing and I can’t update them anymore either.
Whole Laptop restarted several times.
Unsure if this is the same issue.

Expected Behavior

Works as before, it did.

Operating System

Windows 10/11

Current Cursor Version (Menu → About Cursor → Copy)

Version: 1.1.2 (user setup)
VSCode Version: 1.96.2
Commit: 87ea1604be1f602f173c5fb67582e647fcef6c40
Date: 2025-06-13T00:32:17.954Z
Electron: 34.5.1
Chromium: 132.0.6834.210
Node.js: 20.19.0
V8: 13.2.152.41-electron.0
OS: Windows_NT x64 10.0.26100

Does this stop you from using Cursor

No - Cursor works, but with this issue

2

I’m on windows 11 and would really like to know which setup you used to even get a green light, mine is completely red.

3

Model context protocol (MCP) | Supabase Docs Here, also restarting cursor has worked lol