AI agents invoke git_branch to trigger actions in MCP File Edit. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.
The tool is named 'git_branch' which typically lists, creates, or deletes git branches. Creating a branch is a Write-level operation, but deleting a branch could be Destructive. Since the description is empty, I cannot confirm exact behavior. Based on the name alone and the context of sibling git tools (git_add, git_checkout, git_clone), this likely manages branches.
From the tool's definition Tool name 'git_branch' with empty description; sibling tools include git_add, git_checkout, git_clone suggesting git operations
Documented attack patterns abuse exactly the kind of access git_branch gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and MCP File Edit, and nothing reaches the server without passing your rules. This is the rule we recommend for git_branch:
{
"version": "1",
"default": "deny",
"tools": {
"git_branch": {
"limits": [
{
"counter": "git_branch_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}git_branch stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
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git_branch. It is categorised as a Execute tool in the MCP File Edit MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the MCP File Edit MCP server in PolicyLayer and add a rule for git_branch: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches MCP File Edit. Nothing to install.
git_branch is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the git_branch rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for git_branch. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
git_branch is provided by the MCP File Edit MCP server (patrickomatik/mcp-file-edit). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from MCP File Edit, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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32 MCP File Edit tools catalogued and risk-classified — across an index of 43,000+ MCP servers.