change_font · LLM2Docs (Unofficial) MCP: Risk & Policy

WHAT IT DOES

What change_font does on LLM2Docs (Unofficial)

AI agents use change_font to create or update resources in LLM2Docs (Unofficial) — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your LLM2Docs (Unofficial) environment.

WHY IT NEEDS A POLICY

Why change_font needs a policy

This tool modifies a document by changing font properties, which is a reversible write operation. It does not delete data (not Destructive), execute code (not Execute), involve financial transactions (not Financial), or retrieve data without side effects (not Read). The blast radius is minimal since font changes are cosmetic, non-critical modifications that can be easily undone.

From the tool's definition Tool description: "Change the font family of text in a document" - this modifies document content. Sibling tools like append_text, apply_font_formatting, and apply_heading are also Write category operations that reversibly modify document formatting and…

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

change_font Rate-limited

change_font 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": {
    "change_font": {
      "limits": [
        {
          "counter": "change_font_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 LLM2Docs (Unofficial), so you can run agents against it safely.

FAQ

Questions about change_font

What does the change_font tool do? +

Change the font family of text in a document. It is categorised as a Write tool in the LLM2Docs (Unofficial) MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on change_font? +

Register the LLM2Docs (Unofficial) MCP server in PolicyLayer and add a rule for change_font: 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 LLM2Docs (Unofficial). Nothing to install.

What risk level is change_font? +

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

Can I rate-limit change_font? +

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

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

change_font is provided by the LLM2Docs (Unofficial) MCP server (nomannayeem/google-docs-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.