List the courses you are enrolled in on Waterloo LEARN. Returns course names and their ou
AI agents call list_courses to retrieve information from Waterloo Learn without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves enrolled course data from the Waterloo LEARN system without creating, modifying, or deleting any information. It is a straightforward Read operation with minimal blast radius – an AI agent calling this tool cannot cause harm beyond potentially accessing information the user is already entitled to view.
From the tool's definition Tool description states 'List the courses' and 'Returns course names' – a retrieval operation with no modification or side effects. The server description also emphasizes 'listing courses, getting announcements, content, grades' as read-only query operations.
Attacks that exploit this kind of access
List the courses you are enrolled in on Waterloo LEARN. Returns course names and their ou. It is categorised as a Read tool in the Waterloo Learn MCP Server, which means it retrieves data without modifying state.
Register the Waterloo Learn MCP server in PolicyLayer and add a rule for list_courses: 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 Waterloo Learn. Nothing to install.
list_courses 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_courses 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_courses. 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_courses is provided by the Waterloo Learn MCP server (petersenmatthew/waterloo-learn-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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