CCDV-F: Claude Certified Developer — Foundations

By Anthropic · Question Mode

QuestionQ52

VerifiedTools and MCPs

You are deciding between STDIO-based and HTTP-based communication for an MCP server. The server will be started by a locally running Claude Code session. Which communication pattern should you use?

Explanation

STDIO is appropriate for a local, process-spawned MCP server: the client launches the server as a subprocess and exchanges JSON-RPC messages through standard input and output. This avoids the unnecessary network endpoint and configuration required by HTTP transport. MCP Transport Specification

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