get_grade_letters

Read a course's grade letters, from the highest boundary to the lowest: its own when overridden, the site's defaults otherwise.

SERVERMoodle SOURCE@falkenslab/moodle-mcp

Low RISK CLASS

Category Read

Parameters 11 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/falkenslab-moodle-mcp/get-grade-letters.md

WHAT IT DOES

What get_grade_letters does on Moodle

AI agents call get_grade_letters to retrieve information from Moodle without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Parameter	Type	Required	Description
`courseId`	integer	Yes

Parameters from the server's own tool schema.

RISK

Why get_grade_letters is rated Low

Even though get_grade_letters only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

get_grade_letters Allowed

get_grade_letters is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_grade_letters": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about get_grade_letters

What does the get_grade_letters tool do? +

Read a course's grade letters, from the highest boundary to the lowest: its own when overridden, the site's defaults otherwise. It is categorised as a Read tool in the Moodle MCP Server, which means it retrieves data without modifying state.

What parameters does get_grade_letters accept? +

get_grade_letters accepts 1 parameter: courseId. Required: courseId. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on get_grade_letters? +

Register the Moodle MCP server in PolicyLayer and add a rule for get_grade_letters: 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 get_grade_letters? +

get_grade_letters is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get_grade_letters? +

Yes. Add a rate_limit block to the get_grade_letters 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 get_grade_letters completely? +

Set action: deny in the PolicyLayer policy for get_grade_letters. 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 get_grade_letters? +

get_grade_letters 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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