# Claude Code Team Memory: CLAUDE.md, Git, or MCP? > Source: > Published: 2026-07-30 07:24:53+00:00 If a team wants its Claude Code agents to remember decisions and context, three tools come up: a `CLAUDE.md` file, Git itself, and an MCP memory server. They're often framed as competitors. They're not — they cover different layers. Here's the boundary. `CLAUDE.md` : standing instructions, per repo [ CLAUDE.md](https://code.claude.com/docs/en/memory) is a file Claude Code reads automatically. It's the right home for **Good at:** durable rules that rarely change; zero setup; versioned with the code. **Where it stops:** it's static and per-repo. It's a poor fit for "what did we decide this morning," which changes daily, and it doesn't cross repos or capture a decision *at the moment an agent makes one*. It also doesn't help two agents avoid editing the same file right now. Git already stores your code and its history, and commit messages/PRs explain *why a change happened*. Some teams try to extend this into a shared "memory" — a Markdown vault or changelog committed to a repo. **Good at:** it is, and should remain, the canonical record of the code itself. Attribution and history come for free. **Where it stops:** most coordination context has no diff to attach to — "don't touch this module yet," "we're standardizing on X," "who's working on payments." Pushing that into Git turns coordination into a file that has to be pulled, merged, and resolved. Merge conflicts are exactly the thing you're trying to avoid, and a committed vault reintroduces them. Git is also poll-based: an agent only sees an update after a fetch, not the moment it's written. An MCP memory server gives agents a small shared store they read and write through tools, live, across sessions and machines. [MCP is an open standard](https://modelcontextprotocol.io/docs/getting-started/intro) for connecting AI applications to external systems. This is the layer for **the decisions and context that never make it into a commit** — and, in some tools, for coordination primitives like file claims and a task board. **Good at:** capturing a decision the instant an agent makes it; serving it to a *different* agent on a *different* machine on connect; staying vendor-neutral (any MCP client — Claude Code, Cursor, Codex). **Where it stops:** it is not your code store. It shouldn't try to be Git, and a good one won't fetch or clone your repositories. `CLAUDE.md` They compose. Keep code in Git, keep conventions in `CLAUDE.md` , and put the fast-moving team context — "we decided v2," "carol holds payments," "is the API frozen?" — in a shared MCP layer where every agent can read and write it. [Vibsync](https://vibsync.com/) is that MCP layer: durable team memory (`remember` / `recall` ), async agent-to-agent Q&A (`ask` / `reply` ), and file-claim + task coordination — one endpoint, vendor-neutral, bring your own model. It deliberately does **not** ingest your source; Git stays the source of truth. A decision one agent records is inherited by a fresh session on another machine, without anyone copy-pasting context. If your team keeps re-explaining the same decisions to new Claude Code sessions, that's the gap this layer fills. [Try it free during beta](https://vibsync.com/getting-started) — point your agent at `mcp.vibsync.com/mcp` . *Disclosure: this comparison is written by the Vibsync team. Vibsync is built by LOOSEDAYS Co., Ltd.* *Originally published on the Vibsync blog.* If a team wants its Claude Code agents to remember decisions and context, three tools come up: a `CLAUDE.md` file, Git itself, and an MCP memory server. They're often framed as competitors. They're not — they cover different layers. Here's the boundary. `CLAUDE.md` : standing instructions, per repo [ CLAUDE.md](https://code.claude.com/docs/en/memory) is a file Claude Code reads automatically. It's the right home for **Good at:** durable rules that rarely change; zero setup; versioned with the code. **Where it stops:** it's static and per-repo. It's a poor fit for "what did we decide this morning," which changes daily, and it doesn't cross repos or capture a decision *at the moment an agent makes one*. It also doesn't help two agents avoid editing the same file right now. Git already stores your code and its history, and commit messages/PRs explain *why a change happened*. Some teams try to extend this into a shared "memory" — a Markdown vault or changelog committed to a repo. **Good at:** it is, and should remain, the canonical record of the code itself. Attribution and history come for free. **Where it stops:** most coordination context has no diff to attach to — "don't touch this module yet," "we're standardizing on X," "who's working on payments." Pushing that into Git turns coordination into a file that has to be pulled, merged, and resolved. Merge conflicts are exactly the thing you're trying to avoid, and a committed vault reintroduces them. Git is also poll-based: an agent only sees an update after a fetch, not the moment it's written. An MCP memory server gives agents a small shared store they read and write through tools, live, across sessions and machines. [MCP is an open standard](https://modelcontextprotocol.io/docs/getting-started/intro) for connecting AI applications to external systems. This is the layer for **the decisions and context that never make it into a commit** — and, in some tools, for coordination primitives like file claims and a task board. **Good at:** capturing a decision the instant an agent makes it; serving it to a *different* agent on a *different* machine on connect; staying vendor-neutral (any MCP client — Claude Code, Cursor, Codex). **Where it stops:** it is not your code store. It shouldn't try to be Git, and a good one won't fetch or clone your repositories. `CLAUDE.md` They compose. Keep code in Git, keep conventions in `CLAUDE.md` , and put the fast-moving team context — "we decided v2," "carol holds payments," "is the API frozen?" — in a shared MCP layer where every agent can read and write it. [Vibsync](https://vibsync.com/) is that MCP layer: durable team memory (`remember` / `recall` ), async agent-to-agent Q&A (`ask` / `reply` ), and file-claim + task coordination — one endpoint, vendor-neutral, bring your own model. It deliberately does **not** ingest your source; Git stays the source of truth. A decision one agent records is inherited by a fresh session on another machine, without anyone copy-pasting context. If your team keeps re-explaining the same decisions to new Claude Code sessions, that's the gap this layer fills. [Try it free during beta](https://vibsync.com/getting-started) — point your agent at `mcp.vibsync.com/mcp` . *Disclosure: this comparison is written by the Vibsync team. Vibsync is built by LOOSEDAYS Co., Ltd.* *Originally published on the Vibsync blog.*