generate_terrain_map · Loenn MCP: Risk & Policy

WHAT IT DOES

What generate_terrain_map does on Loenn

AI agents invoke generate_terrain_map to trigger actions in Loenn. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why generate_terrain_map needs a policy

Based on the server context (procedurally generate Celeste .bin map files) and the tool name, this likely generates/creates terrain data within a map. With no description available, confidence is low. 'Generate' implies creation/modification of map content (Write), but procedural generation may involve execution of generation algorithms.

From the tool's definition Tool name 'generate_terrain_map'; description is empty and uninformative.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

generate_terrain_map Rate-limited

generate_terrain_map stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "generate_terrain_map": {
      "limits": [
        {
          "counter": "generate_terrain_map_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Loenn, so you can run agents against it safely.

FAQ

Questions about generate_terrain_map

What does the generate_terrain_map tool do? +

generate_terrain_map. It is categorised as a Execute tool in the Loenn MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on generate_terrain_map? +

Register the Loenn MCP server in PolicyLayer and add a rule for generate_terrain_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 Loenn. Nothing to install.

What risk level is generate_terrain_map? +

generate_terrain_map is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit generate_terrain_map? +

Yes. Add a rate_limit block to the generate_terrain_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 generate_terrain_map completely? +

Set action: deny in the PolicyLayer policy for generate_terrain_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 generate_terrain_map? +

generate_terrain_map is provided by the Loenn MCP server (magedeline/loenn-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.