Get the current undo/redo status. Args: doc_name: Document to check. Uses active document if None. Returns: Dictionary with status: - undo_count: Number of undoable operations - redo_count: Number of redoable operations - undo_names: List of undo operation names (if available)
AI agents call get_undo_redo_status to retrieve information from FreeCAD Robust MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a simple state query on the FreeCAD document's undo/redo stack. It retrieves metadata about available undo/redo operations without modifying any data, executing code, or triggering external operations. The return value is read-only information useful for UI display or workflow decisions. No reversible or irreversible modifications occur.
From the tool's definition Tool retrieves undo/redo status information including counts and operation names. Description explicitly states it 'Get[s] the current undo/redo status' and returns a dictionary with counts and names—purely informational queries with no side effects.
Documented attack patterns abuse exactly the kind of access get_undo_redo_status gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and FreeCAD Robust MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_undo_redo_status:
{
"version": "1",
"default": "deny",
"tools": {
"get_undo_redo_status": {}
}
}get_undo_redo_status 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 current undo/redo status. Args: doc_name: Document to check. Uses active document if None. Returns: Dictionary with status: - undo_count: Number of undoable operations - redo_count: Number of redoable operations - undo_names: List of undo operation names (if available). It is categorised as a Read tool in the FreeCAD Robust MCP Server MCP Server, which means it retrieves data without modifying state.
Register the FreeCAD Robust MCP Server MCP server in PolicyLayer and add a rule for get_undo_redo_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 Robust MCP Server. Nothing to install.
get_undo_redo_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 get_undo_redo_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 get_undo_redo_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.
get_undo_redo_status is provided by the FreeCAD Robust MCP Server MCP server (spkane/freecad-addon-robust-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 152 FreeCAD Robust MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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152 FreeCAD Robust MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.