Composer MCP Server: Install & Setup

Install Composer in Claude Code

npm

Claude Code

claude mcp add oaslananka-composer -- npx -y @oaslananka/composer

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "oaslananka-composer": {
      "command": "npx",
      "args": [
        "-y",
        "@oaslananka/composer"
      ]
    }
  }
}

npm

Claude Code

claude mcp add oaslananka-composer -- npx -y @oaslananka/sentinel

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "oaslananka-composer": {
      "command": "npx",
      "args": [
        "-y",
        "@oaslananka/sentinel"
      ]
    }
  }
}

Frequently asked questions

What does the Composer MCP server do?

Aggregate multiple MCP backends behind a single stdio endpoint with namespaced routing.

Is the Composer MCP server free?

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Does Composer run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Composer to Claude Code?

Run: claude mcp add oaslananka-composer -- npx -y @oaslananka/composer

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