update_entity_draft · RPG Maker MV Content Bridge MCP

WHAT IT DOES

What update_entity_draft does on RPG Maker MV Content Bridge

AI agents use update_entity_draft to create or update resources in RPG Maker MV Content Bridge — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your RPG Maker MV Content Bridge environment.

WHY IT NEEDS A POLICY

Why update_entity_draft needs a policy

This tool creates or modifies data (entity drafts) in a reversible manner. It does not delete data (not Destructive), does not execute arbitrary code (not Execute), and does not involve financial transactions (not Financial). The presence of 'discard_pending_changes' and 'diff_pending_changes' sibling tools confirms the draft pattern—changes are staged but not committed until explicitly applied via 'apply_patch'.

From the tool's definition Tool name 'update_entity_draft' and description 'Update an entity draft' indicate modification of draft data without permanent application. The server context emphasizes 'safely write content' and draft workflows, suggesting reversible changes.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_entity_draft Rate-limited

update_entity_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": {
    "update_entity_draft": {
      "limits": [
        {
          "counter": "update_entity_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 RPG Maker MV Content Bridge, so you can run agents against it safely.

FAQ

Questions about update_entity_draft

What does the update_entity_draft tool do? +

Update an entity draft. It is categorised as a Write tool in the RPG Maker MV Content Bridge MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on update_entity_draft? +

Register the RPG Maker MV Content Bridge MCP server in PolicyLayer and add a rule for update_entity_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 RPG Maker MV Content Bridge. Nothing to install.

What risk level is update_entity_draft? +

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

Can I rate-limit update_entity_draft? +

Yes. Add a rate_limit block to the update_entity_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 update_entity_draft completely? +

Set action: deny in the PolicyLayer policy for update_entity_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 update_entity_draft? +

update_entity_draft is provided by the RPG Maker MV Content Bridge MCP server (zdoss/herolink). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.