From the documentation:
For servers requiring authentication (all except PubMed), configure credentials after installation:
Type /plugin in Claude Code
Select "Manage plugins"
Find your installed server
Select "Configure"
Enter required credentials
Restart Claude Code
But there is no "Configure" option to select.
The right way to do it is to select the installed MCP through the /mcp command.

From the documentation:
But there is no "Configure" option to select.
The right way to do it is to select the installed MCP through the /mcp command.