AI agents call obtener_completion to retrieve information from Moodle without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool retrieves/queries completion status data for a user in a course. It only reads state and timestamps with no side effects, writes, or modifications described.
From the tool's definition Activity completion status for a user in a course: per cmid, the state (incomplete / complete / complete_pass / complete_fail) plus completion timestamp.
Attacks that exploit this kind of access
Activity completion status for a user in a course: per cmid, the state (incomplete / complete / complete_pass / complete_fail) plus completion timestamp. It is categorised as a Read tool in the Moodle MCP Server, which means it retrieves data without modifying state.
Register the Moodle MCP server in PolicyLayer and add a rule for obtener_completion: 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. Nothing to install.
obtener_completion 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 obtener_completion 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 obtener_completion. 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.
obtener_completion is provided by the Moodle MCP server (marcosnahuel/moodle-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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