Flappy Bird MCP App

A fully playable Flappy Bird game that runs inline in AI chat clients via MCP Apps.

Setup

bun install
bun run build

Run

bun run serve

Server starts at http://localhost:3001/mcp.

Expose via tunnel (for remote hosts like ChatGPT, Claude.ai)

cloudflared tunnel --url http://localhost:3001

Use the generated https://*.trycloudflare.com/mcp URL as your MCP server endpoint.

Configure

VS Code (1.109+)

See the VS Code MCP docs to add an HTTP server with URL http://localhost:3001/mcp.

ChatGPT

1. Start the tunnel (see above)
2. Go to chatgpt.com → Settings → Apps → Advanced Settings → enable Developer Mode
3. Go back to Apps → click Create App
4. Fill in the details and paste the tunnel URL: https://<your-tunnel>.trycloudflare.com/mcp
5. Change Authentication to No Auth, then check "I understand and want to continue"
6. Click Create

Claude.ai

1. Start the tunnel (see above)
2. Go to claude.ai → Settings → Connectors → click Add custom connector
3. Paste the tunnel URL: https://<your-tunnel>.trycloudflare.com/mcp
4. Click Add

Tools

Tool	Description
play-flappy-bird	Launches the game (renders inline)
submit-score	Submits a score from the game UI
get-high-score	Returns the session high score