[Bug] Claude Code didn't even know it's own syntax for `mcp add`

Bug Description

Wanted to add an MCP server via command line and got proposed the following command from Claude Code itself:

  claude mcp add slack stdio docker -- run -i --rm \
    --entrypoint /usr/local/bin/mcp-server \
    -e SLACK_MCP_XOXC_TOKEN \
    -e SLACK_MCP_XOXD_TOKEN \
    ghcr.io/korotovsky/slack-mcp-server:latest \
    --transport stdio

This does not work (it adds a new mcp server to ~/.claude.json with command = stdio).

Environment Info

• Platform: darwin
• Terminal: webstorm
• Version: 2.1.5
• Feedback ID: 638171d5-71f2-4703-bb77-a55308799b37