Tiny Agents: an MCP-powered agent in 50 lines of code

Hugging Face · 25 April 2025, 00:00

A developer implemented a functioning AI agent in approximately 50 lines of TypeScript that uses Model Context Protocol (MCP) to connect language models with external tools. The agent relies on Qwen/Qwen2.5-72B-Instruct running on Nebius by default and can execute tasks like writing files and browsing the web by connecting to multiple local MCP servers. The implementation demonstrates that agents require only a while loop, an LLM inference client, tool definitions, and basic control flow—significantly simplifying how developers can build agentic systems.