save_document
A write tool on the FreeCAD Robust MCP server.
This record as markdown: /tools/spkane-freecad-addon-robust-mcp-server/save-document.md
What save_document does on FreeCAD Robust MCP Server
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.
Why save_document is rated Medium
The tool creates or modifies data on disk in a reversible manner. While it changes persistent state, it does not delete or irreversibly destroy data, fitting the Write category. Severity is high because an AI agent could overwrite important design files without user consent, though the blast radius is limited to the affected document and recovery is possible via backups or undo workflows.
From the tool's definition Tool name 'save_document' indicates it persists data to disk. No description provided, but in the context of FreeCAD (a 3D modeling application), saving a document modifies file system state by writing model data.
Attacks that exploit this kind of access
The rule that runs save_document safely
PolicyLayer is an MCP gateway: it sits between your AI agents and FreeCAD Robust MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For save_document, this is the rule to start with:
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.
The button opens the PolicyLayer dashboard: create your workspace, connect FreeCAD Robust MCP Server, apply this rule, and every save_document call is checked against it from then on.
Questions about save_document
save_document is a write tool on the FreeCAD Robust MCP Server MCP server. 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.
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