AI agents use withdrawItem to create or update resources in MCP Minecraft Remote — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your MCP Minecraft Remote environment.
Withdrawing items from a container modifies the game state by transferring items, but it's reversible (items can be put back). This is a Write operation. Misuse could deplete shared resources in multiplayer servers, hence medium severity.
From the tool's definition 'Take items from an open container' — moves items from a container into the player's inventory
Documented attack patterns abuse exactly the kind of access withdrawItem gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and MCP Minecraft Remote, and nothing reaches the server without passing your rules. This is the rule we recommend for withdrawItem:
{
"version": "1",
"default": "deny",
"tools": {
"withdrawItem": {
"limits": [
{
"counter": "withdrawitem_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}withdrawItem 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.
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Take items from an open container. It is categorised as a Write tool in the MCP Minecraft Remote MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the MCP Minecraft Remote MCP server in PolicyLayer and add a rule for withdrawItem: 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 MCP Minecraft Remote. Nothing to install.
withdrawItem is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the withdrawItem 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.
Set action: deny in the PolicyLayer policy for withdrawItem. 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.
withdrawItem is provided by the MCP Minecraft Remote MCP server (nacal/mcp-minecraft-remote). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from MCP Minecraft Remote, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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27 MCP Minecraft Remote tools catalogued and risk-classified — across an index of 43,000+ MCP servers.