update-member

Updates a member by Id

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/update-member.md

WHAT IT DOES

What update-member does on Mcp Dev

AI agents use update-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 update-member is rated Medium

This tool creates or modifies member data reversibly. The action is not destructive (data is not deleted), not financial, and not code execution. It is a Write operation that could impact user accounts/profiles but changes are theoretically reversible through subsequent updates.

From the tool's definition Tool name 'update-member' and description 'Updates a member by Id' indicate modification of member data in an Umbraco CMS system.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs update-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 update-member, this is the rule to start with:

update-member Rate-limited

update-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": {
    "update-member": {
      "limits": [
        {
          "counter": "update-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 update-member call is checked against it from then on.

FAQ

Questions about update-member

What does the update-member tool do? +

Updates a member by Id. 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 update-member? +

Register the Mcp Dev MCP server in PolicyLayer and add a rule for update-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 update-member? +

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

Can I rate-limit update-member? +

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

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

update-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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