init-mcp-server

init-mcp-server

Deployable MCP server enabling Gemini to connect via SSE and use utility tools for echoing text, adding numbers, getting the current time, and reversing strings.

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README

init-mcp-server

A cloud-deployable Model Context Protocol (MCP) server using Express + SSE transport. Ready to deploy on Render (free tier) and connect to Gemini as a custom connected app.

Included Tools

Tool Description
echo Returns back the input text (connection test)
add_numbers Adds two numbers
get_current_time Returns current UTC time as ISO-8601
reverse_text Reverses a string

Quick Start

npm install
npm run build
npm start

Deploy to Render

  1. Push this repo to GitHub
  2. Go to Render Dashboard -> New -> Blueprint
  3. Connect the repo and click Apply (render.yaml handles the rest)
  4. Copy your HTTPS URL and connect to Gemini at /sse

Connect to Gemini

  1. Open Gemini -> Settings -> Connected Apps
  2. Add custom app link: https://your-service.onrender.com/sse
  3. Gemini will discover all 4 tools automatically

Project Structure

src/
  index.ts      # Express server + SSE transport
  tools.ts      # Tool definitions and handlers
render.yaml     # Render deployment config
package.json
tsconfig.json

Adding Your Own Tools

Edit src/tools.ts:

  1. Add a new entry to the tools array
  2. Add a matching case in the switch statement
  3. Rebuild and redeploy

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