show_picture · RPG Maker MZ MCP Server MCP: Risk & Policy

WHAT IT DOES

What show_picture does on RPG Maker MZ MCP Server

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

WHY IT NEEDS A POLICY

Why show_picture needs a policy

This tool adds/modifies an event by inserting a 'show picture' command, which is a reversible write operation within the RPG Maker MZ project data. It creates or modifies event content but does not delete data, execute arbitrary code, or have financial implications. Blast radius is low as it only affects visual display within a game event.

From the tool's definition Show a picture in an event

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

show_picture Rate-limited

show_picture 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": {
    "show_picture": {
      "limits": [
        {
          "counter": "show_picture_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 MZ MCP Server, so you can run agents against it safely.

FAQ

Questions about show_picture

What does the show_picture tool do? +

Show a picture in an event. It is categorised as a Write tool in the RPG Maker MZ MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on show_picture? +

Register the RPG Maker MZ MCP Server MCP server in PolicyLayer and add a rule for show_picture: 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 MZ MCP Server. Nothing to install.

What risk level is show_picture? +

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

Can I rate-limit show_picture? +

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

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

show_picture is provided by the RPG Maker MZ MCP Server MCP server (rein1225/rpgmakermz_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.