set_rubric

SERVERMoodle SOURCE@falkenslab/moodle-mcp

Medium RISK CLASS

Category Write

Parameters 64 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/falkenslab-moodle-mcp/set-rubric.md

WHAT IT DOES

What set_rubric does on Moodle

AI agents use set_rubric 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
`name`	string	Yes	Its name, as the advanced grading page lists it
`method`	string	Yes
`comments`	array	—	A marking guide's frequently used comments, in order
`criteria`	array	Yes	In order
`description`	string	—	Its description (HTML)
`assignmentId`	integer	Yes	The assignment's id (course module id), as list_assignments gives it

Parameters from the server's own tool schema.

RISK

Why set_rubric is rated Medium

An AI agent can call set_rubric 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.

Risk signalsHigh parameter count (13 properties)

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs set_rubric 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 set_rubric, this is the rule to start with:

set_rubric Rate-limited

set_rubric 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "set_rubric": {
      "limits": [
        {
          "counter": "set_rubric_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Moodle, apply this rule, and every set_rubric call is checked against it from then on.

FAQ

Questions about set_rubric

What does the set_rubric tool do? +

Define how an assignment is graded with a rubric (criteria, each with two levels or more: a definition and its score) or a marking guide (criteria, each with a short name, a description for students, one for markers and a maximum score, and the guide's frequently used comments), through Moodle's advanced grading editor, ready to use. Creates one where there is none and replaces the one there is, so its criterion and level ids change. Refused once anything has been graded with it: Moodle would regrade. Returns the definition as get_rubric gives it. Changes how students are graded: 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.

What parameters does set_rubric accept? +

set_rubric accepts 6 parameters: name, method, comments, criteria, description, assignmentId. Required: name, method, criteria, assignmentId. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on set_rubric? +

Register the Moodle MCP server in PolicyLayer and add a rule for set_rubric: 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.

What risk level is set_rubric? +

set_rubric is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit set_rubric? +

Yes. Add a rate_limit block to the set_rubric 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.

How do I block set_rubric completely? +

Set action: deny in the PolicyLayer policy for set_rubric. 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.

What MCP server provides set_rubric? +

set_rubric 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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