Esm MCP Server: Install & Setup

Install Esm in Claude Code

Claude Code

claude mcp add esm -- npx -y esm-mcp

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

{
  "mcpServers": {
    "esm": {
      "command": "npx",
      "args": [
        "-y",
        "esm-mcp"
      ]
    }
  }
}

Frequently asked questions

What does the Esm MCP server do?

esm.sh CDN: resolve npm package versions and browse module files. No key required.

Is the Esm 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 Esm run locally or remotely?

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

How do I add Esm to Claude Code?

Run: claude mcp add esm -- npx -y esm-mcp

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