Command+K for Claude.ai

com.commandplusk/command-k

Set up and run an in-product AI assistant: widgets, knowledge, MCP connections, usage.

client:Claude.ai transport:streamable-http

Install Command+K in Claude.ai

Settings → Connectors → Add custom connector

https://commandplusk.com/api/public/mcp

Claude on the web takes a remote URL and completes OAuth in the browser. For a packaged server use Claude Desktop or Claude Code instead. Claude.ai docs

Command+K in other clients

Claude Code
Claude Desktop
Cursor
VS Code
Zed
Windsurf
Cline
Gemini CLI
Grok
ChatGPT
LangChain

Command+K MCP server