find_deprecated_code

THE RISK

Low Risk

Why find_deprecated_code needs a policy

This tool performs a read-only search or query operation across the codebase knowledge graph to identify deprecated code elements and their relationships. It has no side effects—it does not create, modify, delete, execute, or move data. The only action is information retrieval, which is the hallmark of the Read category.

From the tool's definition Tool name 'find_deprecated_code' and description 'Find all code elements marked as deprecated and optionally their dependencies' indicate a query/search operation that retrieves information about deprecated code without modifying, executing, or deleting…

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

POLICY

How to control find_deprecated_code

PolicyLayer is an MCP gateway — it sits between your AI agents and CodeRAG, and nothing reaches the server without passing your rules. This is the rule we recommend for find_deprecated_code:

policy.json

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

find_deprecated_code 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 CodeRAG — 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 →

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EXPLORE

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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 find_deprecated_code

What does the find_deprecated_code tool do? +

Find all code elements marked as deprecated and optionally their dependencies. It is categorised as a Read tool in the CodeRAG MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on find_deprecated_code? +

Register the CodeRAG MCP server in PolicyLayer and add a rule for find_deprecated_code: 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 CodeRAG. Nothing to install.

What risk level is find_deprecated_code? +

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

Can I rate-limit find_deprecated_code? +

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

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

find_deprecated_code is provided by the CodeRAG MCP server (jonnoc/coderag). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every CodeRAG tool call.

Start from CodeRAG, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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