Supabase MCP authentication not triggering in Claude Code (Cursor)
Hi,
I'm trying to set up Supabase MCP with the Claude Code extension in Cursor IDE but the automatic authentication flow isn't working. What I've done:
1/ Added this to .claude.json:
{
"mcpServers": {
"supabase": {
"type": "http",
"url": "https://mcp.supabase.com/mcp"
}
}
}
not working
2/ Created .mcp.json in project root with:
{
"mcpServers": {
"supabase": {
"transport": {
"type": "sse",
"url": "https://mcp.supabase.com/mcp"
}
}
}
}
not working
3/ Restarted Cursor/VSCode multiple times
4/ Tried both with and without explicit transport type
Expected: Browser window opens for Supabase authentication
Actual: No authentication prompt appears, no MCP connection established
Workaround attempted: Created a personal access token and added it via Authorization: Bearer header in the config, but still no connection.
Environment:
IDE: Cursor with Claude Code extension
OS: macOS
No errors in Claude Code output logs (completely blank)
Is there a specific setup step for Claude Code in Cursor, or a way to manually trigger the authentication flow?
I'm trying to set up Supabase MCP with the Claude Code extension in Cursor IDE but the automatic authentication flow isn't working. What I've done:
1/ Added this to .claude.json:
{
"mcpServers": {
"supabase": {
"type": "http",
"url": "https://mcp.supabase.com/mcp"
}
}
}
not working
2/ Created .mcp.json in project root with:
{
"mcpServers": {
"supabase": {
"transport": {
"type": "sse",
"url": "https://mcp.supabase.com/mcp"
}
}
}
}
not working
3/ Restarted Cursor/VSCode multiple times
4/ Tried both with and without explicit transport type
Expected: Browser window opens for Supabase authentication
Actual: No authentication prompt appears, no MCP connection established
Workaround attempted: Created a personal access token and added it via Authorization: Bearer header in the config, but still no connection.
Environment:
IDE: Cursor with Claude Code extension
OS: macOS
No errors in Claude Code output logs (completely blank)
Is there a specific setup step for Claude Code in Cursor, or a way to manually trigger the authentication flow?
