smelt_item · Minecraft Survival MCP Server MCP

WHAT IT DOES

What smelt_item does on Minecraft Survival MCP Server

AI agents invoke smelt_item to trigger actions in Minecraft Survival MCP Server. 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 smelt_item needs a policy

Smelting triggers an in-game operation that consumes resources (fuel and raw materials) and produces outputs. It is an external action with real in-game side effects (resource consumption), making it Execute. It is not purely destructive (items are transformed, not deleted), and has no financial impact. Misuse could waste in-game resources, giving it a medium severity.

From the tool's definition Smelt an item in a nearby furnace-like block. Returns actionable errors for missing furnace, missing input resources, or missing fuel.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

smelt_item Rate-limited

smelt_item 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": {
    "smelt_item": {
      "limits": [
        {
          "counter": "smelt_item_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 Minecraft Survival MCP Server, so you can run agents against it safely.

FAQ

Questions about smelt_item

What does the smelt_item tool do? +

Smelt an item in a nearby furnace-like block. Returns actionable errors for missing furnace, missing input resources, or missing fuel. It is categorised as a Execute tool in the Minecraft Survival MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on smelt_item? +

Register the Minecraft Survival MCP Server MCP server in PolicyLayer and add a rule for smelt_item: 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 Minecraft Survival MCP Server. Nothing to install.

What risk level is smelt_item? +

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

Can I rate-limit smelt_item? +

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

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

smelt_item is provided by the Minecraft Survival MCP Server MCP server (netherite-stack/minecraft-survival-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.