@ebowwa/run-path-mcp

MCP server for PATH manipulation across all package managers.

Install

bun add @ebowwa/run-path-mcp

Usage

Add to Claude Code

Add to your ~/.claude.json or .claude/config.json:

{
  "mcpServers": {
    "run-path": {
      "command": "bun",
      "args": ["/path/to/run-path-mcp/dist/index.js"]
    }
  }
}

Tools

Main PATH Tools

| Tool | Description | |------|-------------| | get_run_path | Get augmented PATH with all package manager binaries | | get_run_path_env | Get complete env object with augmented PATH |

Package Manager Specific

| Tool | Description | |------|-------------| | get_bun_path | PATH with only Bun paths | | get_npm_path | PATH with only npm paths | | get_pnpm_path | PATH with only pnpm paths | | get_yarn_path | PATH with only Yarn paths |

Utility Tools

| Tool | Description | |------|-------------| | detect_package_managers | Detect installed package managers | | get_bin_paths | List all binary directories |

Example

// Call get_run_path_env before spawning processes
{
  "cwd": "/Users/user/project"
}

Returns:

{
  "PATH": "/Users/user/project/node_modules/.bin:/Users/user/.bun/bin:/usr/local/bin:...",
  "HOME": "/Users/user",
  ...
}

Supported Package Managers

• npm / npx - node_modules/.bin, npm global prefix
• bun - ~/.bun/bin, ~/.bun/install/global/
• pnpm - PNPM_HOME, pnpm global bin
• yarn - ~/.yarn/bin, yarn global dir
• deno - ~/.deno/bin

Transport

Currently uses stdio transport. HTTP/SSE transport planned for future versions.

License

MIT