AI agents use create_document to create or update resources in Freecad mcp — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Freecad mcp environment.
Creating a document in FreeCAD is a write operation that modifies the application state by adding a new document. This is reversible (documents can be closed/deleted), so it falls under Write rather than Execute or Destructive. Severity is medium because an agent could spam document creation, consuming resources, but the blast radius is limited to the FreeCAD application instance.
From the tool's definition Tool name 'create_document' combined with sibling tools 'create_object', 'delete_object', 'edit_object' indicates this is part of FreeCAD's document manipulation API. The tool creates a new document, which is a reversible write operation.
Documented attack patterns abuse exactly the kind of access create_document gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Freecad mcp, and nothing reaches the server without passing your rules. This is the rule we recommend for create_document:
{
"version": "1",
"default": "deny",
"tools": {
"create_document": {
"limits": [
{
"counter": "create_document_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}create_document 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_document. It is categorised as a Write tool in the Freecad mcp MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Freecad MCP server in PolicyLayer and add a rule for create_document: 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 Freecad mcp. Nothing to install.
create_document 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_document 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_document. 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_document is provided by the Freecad MCP server (neka-nat/freecad-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Freecad 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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14 Freecad mcp tools catalogued and risk-classified — across an index of 43,000+ MCP servers.