Create a new structure data type with optional initial fields.
AI agents use create_struct to create or update resources in Kawaiidra MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Kawaiidra MCP environment.
Creating a struct in Ghidra's analysis environment is a Write operation: it creates new metadata that persists within the analysis project and can be modified or deleted. It does not execute code (Execute), permanently destroy data (Destructive), move funds (Financial), or merely retrieve information (Read).
From the tool's definition Tool description states 'Create a new structure data type' — this is a reversible write operation that modifies binary analysis metadata (data type definitions) in Ghidra, not the underlying binary itself.
Documented attack patterns abuse exactly the kind of access create_struct gives an agent:
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_struct:
{
"version": "1",
"default": "deny",
"tools": {
"create_struct": {
"limits": [
{
"counter": "create_struct_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}create_struct 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.
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Create a new structure data type with optional initial fields. 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.
Register the Kawaiidra MCP server in PolicyLayer and add a rule for create_struct: 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.
create_struct is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the create_struct 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.
Set action: deny in the PolicyLayer policy for create_struct. 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.
create_struct 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.
Start from Kawaiidra MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
94 Kawaiidra MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.