dice · Fortuna MCP: Risk & Policy

WHAT IT DOES

What dice does on FortunaMCP

AI agents call dice to retrieve information from FortunaMCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

WHY IT NEEDS A POLICY

Why dice needs a policy

This tool retrieves/generates random values with no side effects, modifications, or external operations. It fits the Read category as a data generation/retrieval operation. Severity is low because random dice values have no blast radius—misuse causes no damage, data loss, or unintended effects.

From the tool's definition Tool named 'dice' on a server described as generating 'high-quality random values' using a 'robust, thread-safe C++ RNG engine'. The tool name and server context indicate this generates random dice roll values.

Attacks that exploit this kind of access

Questions about dice

What does the dice tool do? +

dice. It is categorised as a Read tool in the FortunaMCP MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on dice? +

Register the Fortuna MCP server in PolicyLayer and add a rule for dice: 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 FortunaMCP. Nothing to install.

What risk level is dice? +

dice is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit dice? +

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

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

dice is provided by the Fortuna MCP server (siliconsociety/fortunamcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.