AI agents call extract_from_git_commit to retrieve information from Code Graph Knowledge System without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool extracts data from git commits rather than creating, modifying, or deleting commits or code. While the description is empty (lowering confidence slightly), the name and server purpose strongly indicate read-only retrieval. Git commit history is immutable by design, making modification impossible.
From the tool's definition Tool name 'extract_from_git_commit' indicates retrieval of information from git commit history. The server context shows this is part of a code analysis system that performs 'intelligent code analysis, dependency mapping, impact assessment' — operations that…
Documented attack patterns abuse exactly the kind of access extract_from_git_commit gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Code Graph Knowledge System, and nothing reaches the server without passing your rules. This is the rule we recommend for extract_from_git_commit:
{
"version": "1",
"default": "deny",
"tools": {
"extract_from_git_commit": {}
}
}extract_from_git_commit is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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extract_from_git_commit. It is categorised as a Read tool in the Code Graph Knowledge System MCP Server, which means it retrieves data without modifying state.
Register the Code Graph Knowledge System MCP server in PolicyLayer and add a rule for extract_from_git_commit: 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 Code Graph Knowledge System. Nothing to install.
extract_from_git_commit 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 extract_from_git_commit 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 extract_from_git_commit. 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.
extract_from_git_commit is provided by the Code Graph Knowledge System MCP server (royisme/codebase-rag). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Code Graph Knowledge System, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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30 Code Graph Knowledge System tools catalogued and risk-classified — across an index of 43,000+ MCP servers.