create_typedef

THE RISK

Medium Risk

Why create_typedef needs a policy

This tool creates typedef aliases, which are reversible metadata modifications to the binary analysis project. It does not execute code, delete data, or cause external side effects. While it modifies the Ghidra project state, typedef creation is a non-destructive write operation typical of analysis tools. The blast radius is limited to the project's type system and can be undone by removing the typedef.

From the tool's definition Tool description states 'Create a typedef alias for an existing data type.' The verb 'Create' indicates a write operation that generates new metadata/type definitions within Ghidra's analysis database.

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

POLICY

How to control create_typedef

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

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_typedef": {
      "limits": [
        {
          "counter": "create_typedef_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

create_typedef stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

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

LIMIT THIS TOOL →

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EXPLORE

Related tools and policies

More Kawaiidra MCP tools

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about create_typedef

What does the create_typedef tool do? +

Create a typedef alias for an existing data type. It is categorised as a Write tool in the Kawaiidra MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_typedef? +

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

What risk level is create_typedef? +

create_typedef is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit create_typedef? +

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

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

create_typedef is provided by the Kawaiidra MCP server (wagonbomb/kawaiidra-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Kawaiidra MCP tool call.

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

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