grade_quiz_question
Grade one question of a finished attempt by hand, with a comment, as the review's "Make comment or override mark" does: an essay waiting for grading, or any question whose mark is overridden. The mark is in the question's points (0 to its maximum). Returns the attempt's grade afterwards when show...
This record as markdown: /tools/falkenslab-moodle-mcp/grade-quiz-question.md
What grade_quiz_question does on Moodle
AI agents use grade_quiz_question to create or update resources in Moodle, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Moodle environment.
| Parameter | Type | Required | Description |
|---|---|---|---|
mark | number | Yes | |
slot | integer | Yes | |
comment | string | — | No aliases in it, since the student reads it |
attemptId | integer | Yes | As list_questions_to_grade gives it |
Parameters from the server's own tool schema.
Why grade_quiz_question is rated Medium
An AI agent can call grade_quiz_question faster than any human can review: one bad instruction and it creates or modifies resources in Moodle by the hundred, each call as confident as the last.
Attacks that exploit this kind of access
The rule that runs grade_quiz_question safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Moodle, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For grade_quiz_question, this is the rule to start with:
grade_quiz_question stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Moodle, apply this rule, and every grade_quiz_question call is checked against it from then on.
Questions about grade_quiz_question
Grade one question of a finished attempt by hand, with a comment, as the review's "Make comment or override mark" does: an essay waiting for grading, or any question whose mark is overridden. The mark is in the question's points (0 to its maximum). Returns the attempt's grade afterwards when shown. Students may see it: confirm with the person first. It is categorised as a Write tool in the Moodle MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
grade_quiz_question accepts 4 parameters: mark, slot, comment, attemptId. Required: mark, slot, attemptId. The full parameter table on this page comes from the server's own tool schema.
Register the Moodle MCP server in PolicyLayer and add a rule for grade_quiz_question: 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.
grade_quiz_question is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the grade_quiz_question 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 grade_quiz_question. 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.
grade_quiz_question is provided by the Moodle MCP server (@falkenslab/moodle-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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