apply_dialogue_action_beats · Narrarium MCP: Risk & Policy

WHAT IT DOES

What apply_dialogue_action_beats does on Narrarium

AI agents use apply_dialogue_action_beats 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 apply_dialogue_action_beats needs a policy

This tool modifies existing data (dialogue action beats and paragraphs) in a reversible manner. It is not destructive because the changes can be undone or overwritten, and it does not execute arbitrary code or commands—it applies pre-selected beats to text content. The 'medium' severity reflects that misuse could corrupt a manuscript section, but the impact is localized to individual paragraphs and reversible.

From the tool's definition The tool description states it 'writes the paragraph' and 'updates the chosen beats', indicating creation or modification of content within the Narrarium book repository.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

apply_dialogue_action_beats Rate-limited

apply_dialogue_action_beats 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_dialogue_action_beats": {
      "limits": [
        {
          "counter": "apply_dialogue_action_beats_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 apply_dialogue_action_beats

What does the apply_dialogue_action_beats tool do? +

Apply confirmed dialogue action beat selections to a final paragraph after review_dialogue_action_beats. This only updates the chosen beats and then writes the paragraph. 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 apply_dialogue_action_beats? +

Register the Narrarium MCP server in PolicyLayer and add a rule for apply_dialogue_action_beats: 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 apply_dialogue_action_beats? +

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

Can I rate-limit apply_dialogue_action_beats? +

Yes. Add a rate_limit block to the apply_dialogue_action_beats 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_dialogue_action_beats completely? +

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

apply_dialogue_action_beats 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.