List all Minecraft worlds in the server directory with their sizes.
AI agents call list_worlds to retrieve information from Minecraft Server MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only retrieves info rmation ab out existing worlds and their metadata (sizes). It performs a read-only query operation with no side effects, matching the ' Read' categ ory definition. S eve rity is low because merely listing world s poses minimal risk, even if an AI agent misuses this tool—the worst case is information disclosure about server state, not destruction, modification, or financial harm.
From the tool's definition Tool na m e is 'list_ worlds' a nd d escriptio n sta tes 'List a ll Mi necraft wo rld s... with their size s' - this retrieves and queries data without mod ifying or deleting any thing.
Attacks that exploit this kind of access
List all Minecraft worlds in the server directory with their sizes. It is categorised as a Read tool in the Minecraft Server MCP MCP Server, which means it retrieves data without modifying state.
Register the Minecraft Server MCP server in PolicyLayer and add a rule for list_worlds: 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 Server MCP. Nothing to install.
list_worlds is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the list_worlds 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 list_worlds. 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.
list_worlds is provided by the Minecraft Server MCP server (tamo2918/minecraft-server-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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