MCP Academy · Lesson

How stdio Transport Works

Why local servers talk over standard input and output.

Talking Over Pipes

Before you wire your server into anything, you need to know how it actually communicates. The default channel is stdio. 🔌

Standard In, Standard Out

The name stdio is just standard input plus standard output: two text streams every program already has from the moment it starts.

All lessons in this course

  1. How stdio Transport Works
  2. Wire It into Claude Desktop
  3. Explore with MCP Inspector
  4. Debug a Server That Won't Start
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