Run git diff or git diff --staged in an allowed project root.
AI agents call mcp_git_diff to retrieve information from Local Code without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
git diff only reads and displays differences between file states; it produces no side effects, does not modify files, and cannot delete or overwrite anything. It is a pure read/query operation.
From the tool's definition Run git diff or git diff --staged in an allowed project root
Risk signalsAdmin/system-level operation
Attacks that exploit this kind of access
Run git diff or git diff --staged in an allowed project root. It is categorised as a Read tool in the Local Code MCP Server, which means it retrieves data without modifying state.
Register the Local Code MCP server in PolicyLayer and add a rule for mcp_git_diff: 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 Local Code. Nothing to install.
mcp_git_diff is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the mcp_git_diff 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 mcp_git_diff. 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.
mcp_git_diff is provided by the Local Code MCP server (js190-prog/local-code-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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