I built a self-hosted MCP server registry and proxy in TypeScript

The official MCP registry is written in Go and cloud-hosted.

I wanted something I could self-host, written in TypeScript,

that my team could run inside our own infra.

So I built mcp-hub.

What it does

• 
  Register any MCP server (SSE, HTTP, stdio transports)


• 
  Proxy all tool calls through one endpoint with auth forwarding


• 
  Stream every tool call live via WebSocket (Socket.io)


• 
  Monitor server health async via BullMQ jobs

Stack

• NestJS — API framework


• PostgreSQL — server registry + tool call logs
  


• Redis — WebSocket pub/sub + BullMQ transport


• BullMQ — async health check queue


• Socket.io — real-time log streaming

How it works

Register a server once:

curl -X POST http://localhost:3000/api/v1/servers \

  -H 'Content-Type: application/json' \

  -d '{

    "name": "github-mcp",

    "url": "http://my-mcp-server:8080",

    "transport": "http"

  }'

Then proxy any tool call through mcp-hub:

curl -X POST http://localhost:3000/api/v1/proxy/{serverId}/call \

  -H 'Content-Type: application/json' \

  -d '{ "tool": "create_issue", "input": { "title": "Bug" } }'

Every call is logged to PostgreSQL and streamed live over WebSocket.

Run it in one command

git clone https://github.com/DIYA73/mcp-hub

cd mcp-hub

cp .env.example .env

docker compose up

API at http://localhost:3000/api/v1

WebSocket at ws://localhost:3000/logs

Why I built this

I'm running multiple MCP servers locally and needed a central

place to register them, forward calls, and see what's happening

in real time. Nothing TypeScript-native existed.

GitHub: https://github.com/DIYA73/mcp-hub

Feedback welcome — especially if you're running MCP servers in prod.