api_search_category

THE RISK

Low Risk

Why api_search_category needs a policy

This is a read-only query operation that searches a pre-existing categorized API reference database. It retrieves information for analysis purposes without executing code, modifying data, or triggering external operations. The low severity reflects that misuse would only expose forensic reference knowledge, not enable direct system manipulation or data destruction.

From the tool's definition Tool browses/searches Windows APIs by category with hierarchical structure. The description and name indicate passive retrieval of API categorization data with no modification, execution, or side effects.

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

POLICY

How to control api_search_category

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

policy.json

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

api_search_category 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 Windows Forensics MCP Server — 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 api_search_category

What does the api_search_category tool do? +

Browse/search Windows APIs by category. Categories are hierarchical. It is categorised as a Read tool in the Windows Forensics MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on api_search_category? +

Register the Windows Forensics MCP Server MCP server in PolicyLayer and add a rule for api_search_category: 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 Windows Forensics MCP Server. Nothing to install.

What risk level is api_search_category? +

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

Can I rate-limit api_search_category? +

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

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

api_search_category is provided by the Windows Forensics MCP Server MCP server (x746b/winforensics-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Windows Forensics MCP Server tool call.

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

CHECK YOUR STACK →