tool_create_worksheet · origin- MCP: Risk & Policy

WHAT IT DOES

What tool_create_worksheet does on origin-MCP

AI agents use tool_create_worksheet to create or update resources in origin-MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your origin-MCP environment.

WHY IT NEEDS A POLICY

Why tool_create_worksheet needs a policy

This tool creates a new worksheet, which is a reversible write operation that modifies the state of the Origin application by adding a new data container. While not destructive (the worksheet can be deleted), it does modify application state and could clutter the workspace if invoked repeatedly without user intent.

From the tool's definition tool_create_worksheet: Create a new Origin worksheet. Use this before plotting to prepare a data container.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

tool_create_worksheet Rate-limited

tool_create_worksheet 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "tool_create_worksheet": {
      "limits": [
        {
          "counter": "tool_create_worksheet_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches origin-MCP, so you can run agents against it safely.

FAQ

Questions about tool_create_worksheet

What does the tool_create_worksheet tool do? +

Create a new Origin worksheet. Use this before plotting to prepare a data container. It is categorised as a Write tool in the origin-MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on tool_create_worksheet? +

Register the origin- MCP server in PolicyLayer and add a rule for tool_create_worksheet: 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 origin-MCP. Nothing to install.

What risk level is tool_create_worksheet? +

tool_create_worksheet is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit tool_create_worksheet? +

Yes. Add a rate_limit block to the tool_create_worksheet 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.

How do I block tool_create_worksheet completely? +

Set action: deny in the PolicyLayer policy for tool_create_worksheet. 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.

What MCP server provides tool_create_worksheet? +

tool_create_worksheet is provided by the origin- MCP server (zhang-923-ze/origin-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.