AI agents call search_journals 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 queries existing journal entries within the FoundryVTT game world to retrieve information. It performs a search operation which is fundamentally a read-only action that retrieves data without creating, modifying, deleting, or executing any commands. There is no blast radius from misuse—an AI agent searching journals cannot harm game state or cause irreversible changes.
From the tool's definition Tool name 'search_journals' and description 'Search journal entries by name or content' indicate data retrieval without modification or side effects.
Documented attack patterns abuse exactly the kind of access search_journals 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 search_journals:
{
"version": "1",
"default": "deny",
"tools": {
"search_journals": {}
}
}search_journals is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Search journal entries by name or content. 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 search_journals: 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.
search_journals 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 search_journals 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 search_journals. 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.
search_journals 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.