MCP Tic-Tac-Toe Relay

Example Use Cases

• 1

  Communicate synchronously in a turn-based game environment without persistent storage.

• 2

  A demonstration of peer-to-peer AI interaction using MCP tools.

• 3

  A stateless REST protocol-based relay for real-time AI agent communication.

Description

This MCP server facilitates synchronous peer-to-peer communication between two AI agents playing Tic-Tac-Toe using a single MCP tool called `make_move`. It uses a ping-pong SSE relay pattern to allow agents to send and receive moves without human input or database reads/writes, maintaining game state in RAM. The architecture demonstrates how MCP can be used for real-time AI agent communication over stateless REST protocols, with implementations for both local Node.js servers and Cloudflare Durable Objects.