apply_heading · LLM2Docs (Unofficial) MCP: Risk & Policy

WHAT IT DOES

What apply_heading does on LLM2Docs (Unofficial)

AI agents use apply_heading 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 apply_heading needs a policy

This is a Write operation because it creates or modifies document content (formatting text as headings) in a reversible manner. It does not execute code, delete data, or move funds. Severity is medium because a malicious agent could reformat large portions of a document to obscure content or make it unreadable, but the changes are undoable.

From the tool's definition The tool description explicitly states it formats text as heading/title. The sibling tools (append_text, apply_font_formatting, change_font, etc.) all perform document modifications.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

apply_heading Rate-limited

apply_heading 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": {
    "apply_heading": {
      "limits": [
        {
          "counter": "apply_heading_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 apply_heading

What does the apply_heading tool do? +

Format text as heading (H1-H6) or title. 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 apply_heading? +

Register the LLM2Docs (Unofficial) MCP server in PolicyLayer and add a rule for apply_heading: 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 apply_heading? +

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

Can I rate-limit apply_heading? +

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

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

apply_heading 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.