MCP SSE ↔ stdio Bridge

A tiny CLI that bridges a local stdio MCP client to a remote SSE MCP server.

• Generic MCP: works with any stdio MCP client.
• Tested with: Claude Desktop and Claude CLI.
• Primarily for Claude Desktop; CLI supports direct remote SSE via --transport sse.
• No server changes required: keep your SSE-only server.

Usage

Run with npm exec (recommended, Node.js 18+):

npm exec -y --package=@gonzaloafidalgo/mcp-sse-bridge -- mcp-sse-bridge http://<your-mcp>/sse

Alternative (npx):

npx -y --package @gonzaloafidalgo/mcp-sse-bridge -- mcp-sse-bridge http:///sse

Claude Desktop configuration

Edit ~/Library/Application Support/Claude/claude_desktop_config.json (macOS):

Other platforms:

• Linux: ~/.config/Claude/claude_desktop_config.json
• Windows: %AppData%\Claude\claude_desktop_config.json (e.g., C:\Users\<You>\AppData\Roaming\Claude\claude_desktop_config.json)

{
  "mcpServers": {
    "your-mcp": {
      "command": "npx",
      "args": ["-y", "@gonzaloafidalgo/mcp-sse-bridge", "http://<your-mcp>/sse"]
    }
  }
}

Requirements

• Node.js >= 18

License

MIT © 2025 Gonzalo A. Fidalgo