AI agents call get_world_summary to retrieve information from FoundryVTT MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves metadata and statistics about the FoundryVTT world without creating, modifying, or deleting any data. It has no side effects and poses minimal security risk—an AI agent misusing it could only learn information about the game world, not alter it.
From the tool's definition Tool name 'get_world_summary' and description 'Get world metadata and collection counts' indicate retrieval of read-only data about the game world state. The verb 'Get' and lack of any modification language confirm this is a query operation.
Documented attack patterns abuse exactly the kind of access get_world_summary gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and FoundryVTT MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_world_summary:
{
"version": "1",
"default": "deny",
"tools": {
"get_world_summary": {}
}
}get_world_summary is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get world metadata and collection counts. It is categorised as a Read tool in the FoundryVTT MCP Server MCP Server, which means it retrieves data without modifying state.
Register the FoundryVTT MCP Server MCP server in PolicyLayer and add a rule for get_world_summary: 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 FoundryVTT MCP Server. Nothing to install.
get_world_summary 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 get_world_summary 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 get_world_summary. 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.
get_world_summary is provided by the FoundryVTT MCP Server MCP server (laurigates/foundryvtt-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from FoundryVTT MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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25 FoundryVTT MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.