create_activity

SERVERMoodle SOURCE@falkenslab/moodle-mcp

Medium RISK CLASS

Category Write

Parameters 123 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/falkenslab-moodle-mcp/create-activity.md

WHAT IT DOES

What create_activity does on Moodle

AI agents use create_activity 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
`url`	string	—	A URL resource's target
`name`	string	—	Required except for labels
`type`	string	Yes	Moodle's module name: page, label, url, resource, folder, assign, quiz, forum, book…
`embed`	array	—	Absolute local files (images…) to embed in the HTML, which names each by its file name: <img src="shot.png">
`files`	array	—	Absolute local paths: a file resource's file (the first is the main one), a folder's files, a SCORM's package (.zip)
`toolId`	integer	—	type lti: the external tool it's made from, as list_external_tools gives it (Moodle 5 makes LTI activities only from a tool)
`content`	string	—	A page's content, or a label's text (HTML)
`courseId`	integer	Yes
`settings`	object	—	Any other form field by its name in Moodle's activity form, e.g. {"duedate[enabled]": true, "duedate[day]": 12, "grade[modgrade_point]": 10}
`sectionId`	integer	Yes	The section's id, as get_course_structure gives it
`completion`	object	—	When it counts as complete
`visibility`	string	—	"stealth": hidden from the course page but available by link, where the site allows it

Parameters from the server's own tool schema.

RISK

Why create_activity is rated Medium

An AI agent can call create_activity 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 signalsAccepts URL/endpoint input (url) · Accepts raw HTML/template content (content) · High parameter count (32 properties)

Attacks that exploit this kind of access

RECOMMENDED RULE

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

create_activity Rate-limited

create_activity 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": {
    "create_activity": {
      "limits": [
        {
          "counter": "create_activity_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 create_activity call is checked against it from then on.

FAQ

Questions about create_activity

What does the create_activity tool do? +

Create an activity or resource of any type (page, label, url, resource, folder, assign, quiz, forum…) at the end of a section, through Moodle's own form, hidden from students by default. Common fields have their own inputs, access restrictions and completion included; any other setting goes in settings by its form field name. files are local paths uploaded to a file resource or folder, or a SCORM's package (type scorm, the first file). Returns the new activity's id and the course structure. Changes the course: 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 create_activity accept? +

create_activity accepts 12 parameters: url, name, type, embed, files, toolId, content, courseId, settings, sectionId, completion, visibility. Required: type, courseId, sectionId. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on create_activity? +

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

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

Can I rate-limit create_activity? +

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

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

create_activity 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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