set_column_width · Ironcalc MCP: Risk & Policy

WHAT IT DOES

What set_column_width does on Ironcalc

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

WHY IT NEEDS A POLICY

Why set_column_width needs a policy

An AI agent can call set_column_width faster than any human can review — one bad instruction and it creates or modifies resources in Ironcalc by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_column_width Rate-limited

set_column_width 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": {
    "set_column_width": {
      "limits": [
        {
          "counter": "set_column_width_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 Ironcalc, so you can run agents against it safely.

FAQ

Questions about set_column_width

What does the set_column_width tool do? +

Set the width of a column. It is categorised as a Write tool in the Ironcalc MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set_column_width? +

Register the Ironcalc MCP server in PolicyLayer and add a rule for set_column_width: 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 Ironcalc. Nothing to install.

What risk level is set_column_width? +

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

Can I rate-limit set_column_width? +

Yes. Add a rate_limit block to the set_column_width 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 set_column_width completely? +

Set action: deny in the PolicyLayer policy for set_column_width. 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 set_column_width? +

set_column_width is provided by the Ironcalc MCP server (yolonir/ironcalc-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.