// MCP TOOL REFERENCE

Medium Risk

world_map

ServerRpg
CategoryWrite

WHAT IT DOES

What world_map does on Rpg

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

THE RISK

Medium Risk

Why world_map needs a policy

The tool combines read operations (overview, region, tiles, find_poi) with write/modification operations (patch, preview). Since the most severe applicable category must be chosen, and 'patch' applies DSL script modifications to the world map (a persistent SQLite-backed world state), this qualifies as Write.

From the tool's definition 'World map operations - viewing, rendering, and modification' and actions include 'patch - Apply modifications via DSL script' and 'preview - Preview changes before applying'

Documented attack patterns abuse exactly the kind of access world_map gives an agent:

POLICY

How to control world_map

PolicyLayer is an MCP gateway — it sits between your AI agents and Rpg, and nothing reaches the server without passing your rules. This is the rule we recommend for world_map:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "world_map": {
      "limits": [
        {
          "counter": "world_map_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

world_map 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.

Create a free account and register Rpg — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Rpg tools

Execute improvisation_manage Manage improvised actions, custom effects, and arcane synthesis. Actions: stunt, apply_eff Execute execute_lair_action Execute a lair action at initiative 20 when isLairActionPending is true. Apply environment Execute concentration_manage Manage spell concentration (D&D 5e rules). 🎯 WHEN TO USE: - After damage: check_save (CO Execute roll_death_save Roll a d20 death saving throw for a character at 0 HP. 10+ success, nat 20 regains 1 HP, n Execute turn_manage Turn-based strategy game lifecycle (multi-agent coordination). 🎮 STRATEGY TURN CYCLE: 1. Write advance_turn Advance to the next combatant\ Write agent_manage Manage LLM-driven NPCs ( Write aura_manage Manage area-effect auras (Spirit Guardians, Aura of Protection, etc.). Actions: create, li

All 47 Rpg tools →

Write tools on other servers

M-Team MCP Server download_torrent YouTube MCP Server generate_video_title Android Forensics ADB MCP Server combine_reports 0xarchive web3_signup

Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about world_map

What does the world_map tool do? +

World map operations - viewing, rendering, and modification. Actions: overview, region, tiles, patch, preview, find_poi, suggest_poi Aliases: summary→overview, grid→tiles, apply→patch, dry_run→preview, locate→find_poi 🗺️ MAP WORKFLOW: 1. overview - Get high-level world stats 2. region - View specific region details 3. tiles - Get full tile grid for rendering 4. find_poi - Find valid POI placement locations 5. patch - Apply modifications via DSL script 6. preview - Preview changes before applying For world creation/management, use world_manage tool instead. It is categorised as a Write tool in the Rpg MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on world_map? +

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

What risk level is world_map? +

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

Can I rate-limit world_map? +

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

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

world_map is provided by the Rpg MCP server (mnehmos/mnehmos.rpg.mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.