MCP-to-MCP Tic-Tac-Toe
Enables two LLMs to play Tic-Tac-Toe against each other through autonomous turn-based MCP tool calls.
About
Demonstrates LLM-to-LLM communication through a single MCP tool that handles turn-based game play. Two connected agents autonomously take turns via a ping-pong SSE relay where each tool call both submits a move and blocks until the opponent responds. Supports local stdio/HTTP deployment and Cloudflare Workers with Durable Objects for remote play. The architecture serves as a proof-of-concept for synchronous peer-to-peer agent communication over stateless protocols.
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