Save a FreeCAD document. Args: doc_name: Name of document to save. Uses active document if None. path: File path to save to. Uses existing path if None. Required for new (unsaved) documents. Returns: Dictionary with save result: - success: Whether save was successful - path: Path where document w...
AI agents use save_document 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.
The save_document tool creates or modifies files on disk by persisting FreeCAD document state. This is a Write operation because it reversibly changes data (files can be overwritten, deleted, or reverted). Severity is medium because while file writes are impactful, they don't irreversibly destroy data like Destructive tools, don't execute arbitrary code like Execute tools, and don't move money.
From the tool's definition Tool description states 'Save a FreeCAD document' with parameters for doc_name and path, returning success status and saved path. This performs a reversible modification (writing/persisting data) to the file system.
Documented attack patterns abuse exactly the kind of access save_document 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 save_document:
{
"version": "1",
"default": "deny",
"tools": {
"save_document": {
"limits": [
{
"counter": "save_document_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}save_document 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.
Save a FreeCAD document. Args: doc_name: Name of document to save. Uses active document if None. path: File path to save to. Uses existing path if None. Required for new (unsaved) documents. Returns: Dictionary with save result: - success: Whether save was successful - path: Path where document was saved Raises: ValueError: If document not found or no path specified for new doc. 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 save_document: 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.
save_document 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 save_document 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 save_document. 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.
save_document 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.