get_git_diff

Get the full unified diff between two refs (default: HEAD~1..HEAD). Returns diff text, file list, and addition/deletion counts. Use to review changes before logging them to the ledger.

SERVERMcp Dev SOURCE2loch-ness6/mempalace-mcp-dev

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade D, identity unverified Pull the record →

This record as markdown: /tools/2loch-ness6-mempalace-mcp-dev/get-git-diff.md

WHAT IT DOES

What get_git_diff does on Mcp Dev

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

RISK

Why get_git_diff is rated Low

This tool retrieves and displays git diff information between two references without making any changes to the codebase, files, or git state. It is purely informational and read-only, fitting the 'Read' category for retrieval/query operations with no side effects.

From the tool's definition Tool description states it "Get[s] the full unified diff" and "Returns diff text, file list, and addition/deletion counts." The phrase "Use to review changes before logging" indicates this is for inspection/querying purposes only.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs get_git_diff safely

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

get_git_diff Allowed

get_git_diff 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": {
    "get_git_diff": {}
  }
}

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

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

FAQ

Questions about get_git_diff

What does the get_git_diff tool do? +

Get the full unified diff between two refs (default: HEAD~1..HEAD). Returns diff text, file list, and addition/deletion counts. Use to review changes before logging them to the ledger. It is categorised as a Read tool in the Mcp Dev MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_git_diff? +

Register the Mcp Dev MCP server in PolicyLayer and add a rule for get_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 Mcp Dev. Nothing to install.

What risk level is get_git_diff? +

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

Can I rate-limit get_git_diff? +

Yes. Add a rate_limit block to the get_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.

How do I block get_git_diff completely? +

Set action: deny in the PolicyLayer policy for get_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.

What MCP server provides get_git_diff? +

get_git_diff is provided by the Mcp Dev MCP server (2loch-ness6/mempalace-mcp-dev). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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