mcp-toolkit-hub

MCP hub server that aggregates tools from multiple domain packages into a single globally-available interface.

Status

Stage: POC (Proof of Concept)

Related MCP server: UTCP-MCP Bridge

Why a Hub?

Without a hub, each MCP package needs separate configuration, and tools only work in specific project directories. The hub pattern gives you:

• One config — Single config.yaml lists all your domain packages

• Global availability — Tools work regardless of which directory Claude Code starts from

• Namespace clarity — Tools prefixed by domain: briefing_run_weekly_digest, travel_search_flights

Architecture

User Config (~/.config/mcp-toolkit-hub/config.yaml)
         ↓
   mcp-toolkit-hub (this package)
         ↓
   Domain Packages (mcp-content-feed, mcp-travel, etc.)

Prerequisites

• Node.js 18+

• One or more domain MCP packages installed locally

• Domain packages built (npm run build in each)

Quick Start

# 1. Clone and install
git clone https://github.com/lokkaflokka/mcp-toolkit-hub.git
cd mcp-toolkit-hub
npm install

# 2. Create your config
mkdir -p ~/.config/mcp-toolkit-hub
cp examples/config.example.yaml ~/.config/mcp-toolkit-hub/config.yaml
# Edit config.yaml with paths to your domain packages

# 3. Build
npm run build

# 4. Add to Claude Code (user-level for global availability)
claude mcp add -s user personal node /path/to/mcp-toolkit-hub/dist/server/index.js

Configuration

Edit ~/.config/mcp-toolkit-hub/config.yaml:

schema_version: "1.0"
packages:
  briefing:
    path: ~/path/to/mcp-content-feed
    enabled: true
  travel:
    path: ~/path/to/mcp-travel
    enabled: false  # Disabled packages don't expose tools

Available Tools

The hub exposes tools from enabled domain packages, plus:

Domain package tools are namespaced:

• briefing_run_weekly_digest

• briefing_run_rss_digest

• briefing_content_feed_status

• travel_search_flights (when enabled)

Development

npm install
npm run build
npm run dev    # Run with tsx for development
npm test       # Run tests

Key Constraints

• Distributable — This package contains generic orchestration logic; personal config stays in ~/.config/

• Delegates, doesn't duplicate — Business logic lives in domain packages. This package only routes.

• Namespaced tools — Tools prefixed with package name using underscores (MCP spec disallows colons)

Related Packages

• mcp-content-feed — Content scoring and briefing (Gmail + RSS + saved URLs)

• mcp-travel — Flight search and price tracking

License

MIT