Dev.to tutorial Tutorials Oct 8

How Model Context Protocol (MCP) Actually Works: JSON-RPC 2.0, Stdio IPC, and Low-Level Tool Calling

by Syed Anzar

A deep dive into how MCP works under the hood: JSON-RPC 2.0 framing, Stdio file descriptor pipes (FD 0/1/2), SSE transports, lifecycle handshakes, and token overhead.

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MCP

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Devto Id
4815619
Reading Time Minutes
8

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