crow_memory_stats

THE RISK

Low Risk

Why crow_memory_stats needs a policy

This tool purely retrieves and queries memory statistics without side effects. It performs a read-only operation that returns aggregated data about existing memories. No data is created, modified, deleted, or executed—only queried and reported.

From the tool's definition Tool returns statistics and counts about stored memories ('counts by category, total count, importance distribution') with no modification, deletion, or execution capability described.

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

POLICY

How to control crow_memory_stats

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

policy.json

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

crow_memory_stats 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 Crow — 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

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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 →
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FAQ

Questions about crow_memory_stats

What does the crow_memory_stats tool do? +

Get statistics about stored memories - counts by category, total count, importance distribution. It is categorised as a Read tool in the Crow MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on crow_memory_stats? +

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

What risk level is crow_memory_stats? +

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

Can I rate-limit crow_memory_stats? +

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

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

crow_memory_stats is provided by the Crow MCP server (kh0pper/crow). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Crow tool call.

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

CHECK YOUR STACK →