Confirm who you are on Moodle and that the token is valid.
AI agents call whoami to retrieve information from Moodle Student MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only retrieves and confirms the current user's identity by validating the authentication token. It has no side effects, does not modify data, and does not trigger external operations. It is a pure read operation with minimal blast radius — worst case, an attacker learns the identity associated with a stolen token.
From the tool's definition Tool description states 'Confirm who you are on Moodle and that the token is valid' — a simple identity verification that queries user information without modification.
Attacks that exploit this kind of access
Confirm who you are on Moodle and that the token is valid. It is categorised as a Read tool in the Moodle Student MCP MCP Server, which means it retrieves data without modifying state.
Register the Moodle Student MCP server in PolicyLayer and add a rule for whoami: 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 Moodle Student MCP. Nothing to install.
whoami 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 whoami 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 whoami. 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.
whoami is provided by the Moodle Student MCP server (tcpassos/moodle-student-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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