Redo the last undone operation. Args: doc_name: Document to redo in. Uses active document if None. Returns: Dictionary with result: - success: Whether redo was performed - can_redo: Whether more redos are available
AI agents use redo to create or update resources in FreeCAD Robust MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your FreeCAD Robust MCP Server environment.
This tool modifies document state by reapplying previously undone operations. It is reversible (can be undone again via undo), so it qualifies as Write rather than Destructive. The severity is medium because misuse could modify 3D models unexpectedly, but the action is recoverable and scoped to a single document's redo stack.
From the tool's definition Tool name 'redo' and description 'Redo the last undone operation' indicate it performs a state modification that reverses an undo action, restoring previously undone changes to the FreeCAD document.
Documented attack patterns abuse exactly the kind of access redo 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 redo:
{
"version": "1",
"default": "deny",
"tools": {
"redo": {
"limits": [
{
"counter": "redo_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}redo stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Redo the last undone operation. Args: doc_name: Document to redo in. Uses active document if None. Returns: Dictionary with result: - success: Whether redo was performed - can_redo: Whether more redos are available. It is categorised as a Write tool in the FreeCAD Robust MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the FreeCAD Robust MCP Server MCP server in PolicyLayer and add a rule for redo: 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.
redo is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the redo 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 redo. 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.
redo 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.
Free to start. No card required.
152 FreeCAD Robust MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.