AI agents call get_document_graph 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 'get_' prefix and 'document_graph' naming strongly suggest retrieving or querying the hierarchical structure of a FreeCAD document. This is consistent with introspection and diagnostic tools in the sibling set. No description is available to confirm, which slightly lowers confidence, but retrieval of document metadata and structure graphs represent read-only operations with no side effects.
From the tool's definition Tool name is 'get_document_graph' with empty description. Based on the naming convention and sibling tools (list_documents, inspect_object, analyze_shape), this appears to be a query/retrieval tool for examining FreeCAD document structure.
Documented attack patterns abuse exactly the kind of access get_document_graph 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 get_document_graph:
{
"version": "1",
"default": "deny",
"tools": {
"get_document_graph": {}
}
}get_document_graph is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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get_document_graph. 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 get_document_graph: 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.
get_document_graph 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 get_document_graph 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 get_document_graph. 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.
get_document_graph 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.