Check FEM workbench and CalculiX solver availability.
AI agents call fem_status to retrieve information from FreeCAD MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only query to determine the status of the FEM (Finite Element Method) workbench and CalculiX solver. It has no side effects, does not execute simulations, does not modify files or models, and does not delete or create data. It simply reports availability/status information, fitting the 'Read' category definition of data retrieval without side effects.
From the tool's definition Tool name 'fem_status' and description 'Check FEM workbench and CalculiX solver availability' indicate a status-checking operation that retrieves information about solver availability without modifying any data or triggering computations.
Attacks that exploit this kind of access
Check FEM workbench and CalculiX solver availability. It is categorised as a Read tool in the FreeCAD MCP MCP Server, which means it retrieves data without modifying state.
Register the FreeCAD MCP server in PolicyLayer and add a rule for fem_status: 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.
fem_status 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 fem_status 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 fem_status. 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.
fem_status is provided by the FreeCAD MCP server (sandraschi/freecad-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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