create-member

Creates a member in Umbraco. Use this endpoint to create new members with the specified properties and groups.

SERVERMcp Dev SOURCE@umbraco-cms/mcp-dev

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/mcp-dev/create-member.md

WHAT IT DOES

What create-member does on Mcp Dev

AI agents use create-member to create or update resources in Mcp Dev, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Mcp Dev environment.

RISK

Why create-member is rated Medium

The tool creates new member accounts in an Umbraco CMS system, which is a reversible write operation. It does not execute arbitrary code, delete data irreversibly, or move financial resources.

From the tool's definition Tool name is 'create-member' and description states 'Creates a member in Umbraco' and 'create new members with the specified properties and groups.' This clearly performs a create/write operation on member data.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs create-member safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Mcp Dev, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For create-member, this is the rule to start with:

create-member Rate-limited

create-member 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-member": {
      "limits": [
        {
          "counter": "create-member_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 Mcp Dev, apply this rule, and every create-member call is checked against it from then on.

FAQ

Questions about create-member

What does the create-member tool do? +

Creates a member in Umbraco. Use this endpoint to create new members with the specified properties and groups. It is categorised as a Write tool in the Mcp Dev MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create-member? +

Register the Mcp Dev MCP server in PolicyLayer and add a rule for create-member: 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 Mcp Dev. Nothing to install.

What risk level is create-member? +

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

Can I rate-limit create-member? +

Yes. Add a rate_limit block to the create-member 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-member completely? +

Set action: deny in the PolicyLayer policy for create-member. 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-member? +

create-member is provided by the Mcp Dev MCP server (@umbraco-cms/mcp-dev). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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