get-random-colour · Jokes MCP Server MCP: Risk & Policy

WHAT IT DOES

What get-random-colour does on Jokes MCP Server

AI agents call get-random-colour to retrieve information from Jokes MCP Server 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 get-random-colour needs a policy

This is a simple read operation that retrieves and returns a random colour value. There are no mutations, deletions, code execution, or financial implications. The tool has minimal security impact as it only queries/returns informational data.

From the tool's definition Tool name 'get-random-colour' and description 'Get a random colour' indicate a retrieval operation with no side effects. Returns data without modifying, creating, or deleting anything.

Attacks that exploit this kind of access

Questions about get-random-colour

What does the get-random-colour tool do? +

Get a random colour. It is categorised as a Read tool in the Jokes MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get-random-colour? +

Register the Jokes MCP Server MCP server in PolicyLayer and add a rule for get-random-colour: 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 Jokes MCP Server. Nothing to install.

What risk level is get-random-colour? +

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

Can I rate-limit get-random-colour? +

Yes. Add a rate_limit block to the get-random-colour 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 get-random-colour completely? +

Set action: deny in the PolicyLayer policy for get-random-colour. 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 get-random-colour? +

get-random-colour is provided by the Jokes MCP Server MCP server (robertllouw/mcpdemo). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.