extract_from_code_comments

THE RISK

Low Risk

Why extract_from_code_comments needs a policy

This tool appears to parse and extract information from code comments for knowledge graph population or analysis. Extraction from comments is fundamentally a read operation—it retrieves existing data without side effects.

From the tool's definition Tool name 'extract_from_code_comments' indicates retrieval of data from existing code comments. No description provided, but pattern aligns with sibling 'Read'-category tools like 'batch_extract_from_repository' which performs analysis and extraction without…

Documented attack patterns abuse exactly the kind of access extract_from_code_comments gives an agent:

POLICY

How to control extract_from_code_comments

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_code_comments:

policy.json

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

extract_from_code_comments is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Code Graph Knowledge System — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Code Graph Knowledge System tools

Destructive clear_knowledge_base Clear all data from knowledge base (DANGEROUS - requires confirmation). Destructive delete_memory Delete memory (soft delete - data retained). Execute cancel_task Cancel a pending or running task. Write code_graph_ingest_repo code_graph_ingest_repo Write add_directory Add all files from a directory to the knowledge base. Processes recursively. Write add_document add_document Write add_file Add a file to the knowledge base. Supports text files, code files, and documents. Write add_memory add_memory

All 30 Code Graph Knowledge System tools →

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about extract_from_code_comments

What does the extract_from_code_comments tool do? +

extract_from_code_comments. It is categorised as a Read tool in the Code Graph Knowledge System MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on extract_from_code_comments? +

Register the Code Graph Knowledge System MCP server in PolicyLayer and add a rule for extract_from_code_comments: 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.

What risk level is extract_from_code_comments? +

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

Can I rate-limit extract_from_code_comments? +

Yes. Add a rate_limit block to the extract_from_code_comments 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 extract_from_code_comments completely? +

Set action: deny in the PolicyLayer policy for extract_from_code_comments. 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 extract_from_code_comments? +

extract_from_code_comments 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.

Enforce policy on every Code Graph Knowledge System tool call.

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.

CHECK YOUR STACK →