MO MCP Bridge

A lightweight bridge for Model Context Protocol (MCP) servers using HTTP Streamable transport. Connects Claude Desktop (STDIO) to a remote MCP server over HTTP.

Features

• No authentication required — perfect for MCP servers with web-based login portals
• Zero configuration — just provide the server URL
• Lightweight — minimal dependencies, pure Node.js
• Secure — no credentials stored in config files

Usage

npx [email protected] <server-url>

With Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "mosl-trading": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]",
        "https://mcp.motilaloswal.com/mcp/"
      ]
    }
  }
}

Command Line

mo-mcp-sse-bridge https://your-server.com/mcp/

How It Works

This bridge creates a simple stdio ↔ HTTP proxy using the MCP HTTP Streamable transport (MCP 2025-03-26 spec):

Claude Desktop (stdio)
       ↓
MCP Bridge (Node.js, local)
       ↓
MCP Server (HTTP POST /mcp/ + SSE streaming)

Unlike SSE-only bridges, this one uses HTTP Streamable — a single /mcp/ endpoint that accepts HTTP POST requests and returns streamed responses. It doesn't require environment variables or credentials; it's perfect for MCP servers that handle authentication via web portals.

Use Cases

• MCP servers with web-based login portals
• Multi-user MCP servers with session-based authentication
• Development and testing of MCP servers
• Any HTTP Streamable MCP server

License

MIT

Author

Created for the MOSL OpenAPI MCP Server project.