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

WHAT IT DOES

What draw_map_tile does on RPG Maker MZ MCP Server

AI agents use draw_map_tile 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 draw_map_tile needs a policy

This tool creates or modifies map tile data within the RPG Maker MZ project. While tile placement is reversible (tiles can be redrawn or erased), it directly alters game map state. It does not execute arbitrary code, delete data irreversibly, or move money, making Write the appropriate category.

From the tool's definition Tool name 'draw_map_tile' and description 'Draw a tile on the map' indicate creation/modification of map data. The verb 'draw' in the context of map editing means to place or paint tiles, which is a reversible data modification operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

draw_map_tile Rate-limited

draw_map_tile 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": {
    "draw_map_tile": {
      "limits": [
        {
          "counter": "draw_map_tile_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 draw_map_tile

What does the draw_map_tile tool do? +

Draw a tile on the map. 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 draw_map_tile? +

Register the RPG Maker MZ MCP Server MCP server in PolicyLayer and add a rule for draw_map_tile: 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 draw_map_tile? +

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

Can I rate-limit draw_map_tile? +

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

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

draw_map_tile 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.