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warpdev

MCP Hub MCP Server

by warpdev
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TypeScript
Hybrid

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MCP-Hub-MCP Server

A hub server that connects to and manages other MCP (Model Context Protocol) servers.

Overview

This project builds an MCP hub server that connects to and manages multiple MCP (Model Context Protocol) servers through a single interface. It helps prevent excessive context usage and pollution from infrequently used MCPs (e.g., Atlassian MCP, Playwright MCP) by allowing you to connect them only when needed. This reduces AI mistakes and improves performance by keeping the active tool set focused and manageable.

Related MCP server: MCP Server

Key Features

  • Automatic connection to other MCP servers via configuration file

  • List available tools on connected servers

  • Call tools on connected servers and return results

Configuration

Add this to your mcp.json:

Using npx

{ "mcpServers": { "other-tools": { "command": "npx", "args": [ "-y", "mcp-hub-mcp", "--config-path", "/Users/username/mcp.json" ] } } }

Installation and Running

Requirements

  • Node.js 18.0.0 or higher

  • npm, yarn, or pnpm

Installation

# Clone repository git clone <repository-url> cd mcp-hub-mcp # Install dependencies npm install # or yarn install # or pnpm install

Build

npm run build # or yarn build # or pnpm build

Run

npm start # or yarn start # or pnpm start

Development Mode

npm run dev # or yarn dev # or pnpm dev

Configuration File

The MCP-Hub-MCP server uses a Claude Desktop format configuration file to automatically connect to other MCP servers. You can specify the configuration file in the following ways:

  1. Environment variable: Set the MCP_CONFIG_PATH environment variable to the configuration file path

  2. Command line argument: Use the --config-path option to specify the configuration file path

  3. Default path: Use mcp-config.json file in the current directory

Configuration file format:

{ "mcpServers": { "serverName1": { "command": "command", "args": ["arg1", "arg2", ...], "env": { "ENV_VAR1": "value1", ... } }, "serverName2": { "command": "anotherCommand", "args": ["arg1", "arg2", ...] } } }

Example:

{ "mcpServers": { "filesystem": { "command": "npx", "args": [ "-y", "@modelcontextprotocol/server-filesystem", "/Users/username/Desktop", "/Users/username/Downloads" ] }, "other-server": { "command": "node", "args": ["path/to/other-mcp-server.js"] } } }

Usage

The MCP-Hub-MCP server provides the following tools:

1. list-all-tools

Returns a list of tools from all connected servers.

{ "name": "list-all-tools", "arguments": {} }

2. call-tool

Calls a tool on a specific server.

  • serverName: Name of the MCP server to call the tool from

  • toolName: Name of the tool to call

  • toolArgs: Arguments to pass to the tool

{ "name": "call-tool", "arguments": { "serverName": "filesystem", "toolName": "readFile", "toolArgs": { "path": "/Users/username/Desktop/example.txt" } } }

3. find-tools

Find tools matching a regex pattern across all connected servers (grep-like functionality).

  • pattern: Regex pattern to search for in tool names and descriptions

  • searchIn: Where to search: "name", "description", or "both" (default: "both")

  • caseSensitive: Whether the search should be case-sensitive (default: false)

{ "name": "find-tools", "arguments": { "pattern": "file", "searchIn": "both", "caseSensitive": false } }

Example patterns:

  • "file" - Find all tools containing "file"

  • "^read" - Find all tools starting with "read"

  • "(read|write).*file" - Find tools for reading or writing files

  • "config$" - Find tools ending with "config"

Example output:

{ "filesystem": [ { "name": "readFile", "description": "Read the contents of a file", "inputSchema": { "type": "object", "properties": { "path": { "type": "string", "description": "Path to the file to read" } }, "required": ["path"] } }, { "name": "writeFile", "description": "Write content to a file", "inputSchema": { "type": "object", "properties": { "path": { "type": "string", "description": "Path to the file to write" }, "content": { "type": "string", "description": "Content to write to the file" } }, "required": ["path", "content"] } } ] }

Commit Message Convention

This project follows Conventional Commits for automatic versioning and CHANGELOG generation.

Format: <type>(<scope>): <description>

Examples:

  • feat: add new hub connection feature

  • fix: resolve issue with server timeout

  • docs: update API documentation

  • chore: update dependencies

Types:

  • feat: New feature (MINOR version bump)

  • fix: Bug fix (PATCH version bump)

  • docs: Documentation only changes

  • style: Changes that do not affect the meaning of the code

  • refactor: Code change that neither fixes a bug nor adds a feature

  • perf: Code change that improves performance

  • test: Adding missing tests or correcting existing tests

  • chore: Changes to the build process or auxiliary tools

Breaking Changes: Add BREAKING CHANGE: in the commit footer to trigger a MAJOR version bump.

Other Links

License

MIT

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security – no known vulnerabilities
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