AI agents call get_parts_list 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 retrieves and lists available parts from a library without creating, modifying, deleting, or executing any operations. It is a straightforward read operation that returns informational data about existing parts in the addon's library.
From the tool's definition Tool name 'get_parts_list' and description 'Get the list of parts in the parts library addon' indicate a query/retrieval operation with no side effects.
Documented attack patterns abuse exactly the kind of access get_parts_list 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 get_parts_list:
{
"version": "1",
"default": "deny",
"tools": {
"get_parts_list": {}
}
}get_parts_list is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get the list of parts in the parts library addon. 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 get_parts_list: 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.
get_parts_list 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_parts_list 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_parts_list. 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_parts_list 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.