create_chapter_draft · Narrarium MCP: Risk & Policy

WHAT IT DOES

What create_chapter_draft does on Narrarium

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

WHY IT NEEDS A POLICY

Why create_chapter_draft needs a policy

This tool creates new draft content reversibly. Drafts are typically working documents that can be modified or deleted without affecting published work. There is no indication of destructive operations, financial transactions, or code execution. The action is write-like (creates new data) rather than destructive (no permanent deletion) or execute-like (no arbitrary code/command execution).

From the tool's definition Tool description states 'Create a rough chapter draft' and 'using the same chapter slug structure', indicating it creates new content in a drafts directory.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_chapter_draft Rate-limited

create_chapter_draft 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": {
    "create_chapter_draft": {
      "limits": [
        {
          "counter": "create_chapter_draft_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 Narrarium, so you can run agents against it safely.

FAQ

Questions about create_chapter_draft

What does the create_chapter_draft tool do? +

Create a rough chapter draft inside drafts/ using the same chapter slug structure as the final chapter tree. Keep canon names as plain text in the draft prose instead of markdown links. It is categorised as a Write tool in the Narrarium MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_chapter_draft? +

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

What risk level is create_chapter_draft? +

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

Can I rate-limit create_chapter_draft? +

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

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

create_chapter_draft is provided by the Narrarium MCP server (narrarium-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.