AI agents call get_courses to retrieve information from eClass 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 and retrieves course enrollment data without creating, modifying, deleting, or executing operations. The blast radius of misuse is minimal — an agent could access a user's course list, but cannot alter platform state or cause financial/destructive harm. Low severity is appropriate for information disclosure of course enrollment.
From the tool's definition Tool description states 'Get list of enrolled courses from eClass' — a retrieval operation with no side effects. The verb 'get' and the lack of any mention of modification, deletion, or execution confirms read-only behavior.
Documented attack patterns abuse exactly the kind of access get_courses gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and eClass MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_courses:
{
"version": "1",
"default": "deny",
"tools": {
"get_courses": {}
}
}get_courses is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get list of enrolled courses from eClass. It is categorised as a Read tool in the eClass MCP Server MCP Server, which means it retrieves data without modifying state.
Register the eClass MCP Server MCP server in PolicyLayer and add a rule for get_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 eClass MCP Server. Nothing to install.
get_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 get_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 get_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.
get_courses is provided by the eClass MCP Server MCP server (sdi2200262/eclass-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from eClass 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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4 eClass MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.