AI agents call analyze_shape to retrieve information from FreeCAD MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool appears to analyze or inspect shape properties/geometry within FreeCAD. While the description is empty (lowering confidence), the name and context among diagnostic/read-only tools (list_documents, get_document_graph, get_screenshot, inspect_object, get_sketch_diagnostics) indicate this retrieves or queries shape data without side effects.
From the tool's definition Tool name 'analyze_shape' combined with context of diagnostic/introspection tools on the server (get_sketch_diagnostics, inspect_object, get_screenshot).
Documented attack patterns abuse exactly the kind of access analyze_shape gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and FreeCAD MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for analyze_shape:
{
"version": "1",
"default": "deny",
"tools": {
"analyze_shape": {}
}
}analyze_shape is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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analyze_shape. It is categorised as a Read tool in the FreeCAD MCP Server MCP Server, which means it retrieves data without modifying state.
Register the FreeCAD MCP Server MCP server in PolicyLayer and add a rule for analyze_shape: 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 Server. Nothing to install.
analyze_shape is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the analyze_shape 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 analyze_shape. 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.
analyze_shape is provided by the FreeCAD MCP Server MCP server (theosib/freecad-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from FreeCAD MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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9 FreeCAD MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.