AI agents use spreadsheet_import_csv 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.
Importing CSV data creates or modifies spreadsheet contents reversibly. This is a Write operation—it alters the document's data structure but does not delete, execute arbitrary code, or trigger external operations. Medium severity because misuse could corrupt or overwrite important spreadsheet data, but the operation is reversible.
From the tool's definition Tool name 'spreadsheet_import_csv' indicates importing/loading CSV data into a spreadsheet, which modifies spreadsheet state by adding or populating data.
Documented attack patterns abuse exactly the kind of access spreadsheet_import_csv 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 spreadsheet_import_csv:
{
"version": "1",
"default": "deny",
"tools": {
"spreadsheet_import_csv": {
"limits": [
{
"counter": "spreadsheet_import_csv_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}spreadsheet_import_csv 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.
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spreadsheet_import_csv. 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 spreadsheet_import_csv: 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.
spreadsheet_import_csv 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 spreadsheet_import_csv 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 spreadsheet_import_csv. 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.
spreadsheet_import_csv 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.