git_diff_staged

Show changes staged for the next commit

SERVERGit SOURCE@modelcontextprotocol/server-git

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade D, identity verified Pull the record →

This record as markdown: /tools/git/git-diff-staged.md

WHAT IT DOES

What git_diff_staged does on Git

AI agents call git_diff_staged to retrieve information from Git without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why git_diff_staged is rated Low

This tool retrieves and displays staged changes in a git repository. It has no side effects, does not modify or delete data, and does not execute arbitrary code or trigger external operations. It is a pure read operation similar to git_diff or git_log, making it low severity with high confidence.

From the tool's definition Tool name is 'git_diff_staged' and description states 'Show changes staged for the next commit' — this is a query operation that displays differences without modifying any data.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs git_diff_staged safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Git, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For git_diff_staged, this is the rule to start with:

git_diff_staged Allowed

git_diff_staged is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "git_diff_staged": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Git, apply this rule, and every git_diff_staged call is checked against it from then on.

FAQ

Questions about git_diff_staged

What does the git_diff_staged tool do? +

Show changes staged for the next commit. It is categorised as a Read tool in the Git MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on git_diff_staged? +

Register the Git MCP server in PolicyLayer and add a rule for git_diff_staged: 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 Git. Nothing to install.

What risk level is git_diff_staged? +

git_diff_staged is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit git_diff_staged? +

Yes. Add a rate_limit block to the git_diff_staged 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.

How do I block git_diff_staged completely? +

Set action: deny in the PolicyLayer policy for git_diff_staged. 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.

What MCP server provides git_diff_staged? +

git_diff_staged is provided by the Git MCP server (@modelcontextprotocol/server-git). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Git, and thousands of servers like it.

This server

All 14 Git tools →

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claude_git_status on Claude Bridge → The MCP Attack Database →

Guides

Roll out MCP under one policy →Data exfiltration →MCP token cost →