Get knowledge base statistics (node count, document count, etc.).
AI agents call get_statistics 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.
This tool retrieves summary statistics from the knowledge base. It is a pure read operation with no side effects, no code execution, no data modification, and no destructive actions. The blast radius of misuse is minimal—an AI agent could only obtain metadata about the knowledge graph structure, which poses negligible security risk.
From the tool's definition Tool name 'get_statistics' and description 'Get knowledge base statistics (node count, document count, etc.)' indicate a retrieval operation that queries aggregate metrics without modifying, executing, or deleting any data.
Documented attack patterns abuse exactly the kind of access get_statistics 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 get_statistics:
{
"version": "1",
"default": "deny",
"tools": {
"get_statistics": {}
}
}get_statistics is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get knowledge base statistics (node count, document count, etc.). 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 get_statistics: 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.
get_statistics 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 get_statistics 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 get_statistics. 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.
get_statistics 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.