CLAUDE.md, Git, and MCP Servers Each Play a Distinct Role in AI Agent Memory

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Teams using Claude Code agents have three main tools for preserving context and decisions: a CLAUDE.md file, Git, and an MCP memory server. CLAUDE.md is best suited for stable, repo-specific conventions like coding style and architecture rules, but cannot capture real-time decisions or coordinate across repositories. Git reliably tracks code history and the reasoning behind changes, but is poorly suited for live team coordination since it is poll-based and prone to merge conflicts when used as a shared memory store. MCP memory servers fill the gap by providing a live, shared store that agents can read and write across sessions and machines, capturing decisions the moment they are made. The three tools are designed to complement each other: Git holds the code, CLAUDE.md stores standing instructions, and an MCP layer handles fast-moving team context and cross-agent coordination.

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