MCP Gateway

MCP Gateway

An MCP gateway that aggregates multiple MCP resource servers through a single interface.

Features

• MCP Proxy: A single endpoint for accessing multiple MCP servers
• Batch Request Tool: Optimized parallel execution for multiple tool calls
• Configuration Merging: Works with Claude desktop configuration

Configuration Paths

The gateway looks for configuration files in the following order:

1. Environment variable: MCP_CONFIG_PATH if set
2. Claude desktop config:
   • macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
   • Windows: %APPDATA%/Claude/claude_desktop_config.json
   • Linux: ~/.config/Claude/claude_desktop_config.json
3. Default: config.json in current directory

Config Merging with Claude

The gateway can read the proxyBatchMcpServers section from your Claude desktop config:

{
  "mcpServers": {
    "mcp-gateway": {
      "command": "npx",
      "args": [
        "-y",
        "@thinkware/mcp-gateway"
      ]
    }
  },
  "proxyBatchMcpServers": {
    "filesystem": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-filesystem",
        "/Users/username/Desktop",
        "/path/to/other/allowed/dir"
      ],
      "toolOverrides": {
        "read_file": {
          "enabled": true,
          "description": "Read complete contents of a file\nInput: path (string)\nReads complete file contents with UTF-8 encoding"
        },
        "read_multiple_files": {
          "enabled": false
        }
      }
    },
    "server-1": {
      "command": "/path/to/server1/build/index.js",
      "toolOverrides": {
        "some_tool": {
          "enabled": true,
          "description": "Custom description"
        }
      }
    }
  }
}

Server Configuration Options

| Option | Type | Description | Required | |--------|------|-------------|----------| | command | string | Path to server executable | Yes (for command servers) | | args | string[] | Command arguments | No | | env | object | Environment variables | No | | url | string | SSE endpoint URL | Yes (for SSE servers) | | toolOverrides | object | Tool customization | No |

Tool Override Options

| Option | Type | Description | Default | |--------|------|-------------|---------| | enabled | boolean | Enable/disable tool | true | | description | string | Custom tool description | Original description | | disabled | boolean | Disable entire tool | false |

Environment Variables

{
  "mcpServers": {
    "mcp-gateway": {
      "command": "npx",
      "args": [
        "-y",
        "@thinkware/mcp-gateway"
      ],
      "env": {
        "MCP_GATEWAY_LOG_FILE": "/path/to/logs/mcp-gateway.log"
      }
    }
  }
}

Development

# Install dependencies
npm install

# Development with auto-rebuild
npm run dev

# Build
npm run build