update-user · Openfort MCP Server MCP: Risk & Policy

WHAT IT DOES

What update-user does on Openfort MCP Server

AI agents use update-user to create or update resources in Openfort MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Openfort MCP Server environment.

WHY IT NEEDS A POLICY

Why update-user needs a policy

This tool modifies user records but does not delete or destroy data (hence not Destructive), does not execute arbitrary code (hence not Execute), and does not move money (hence not Financial).

From the tool's definition Tool name 'update-user' and description 'Update an existing user' clearly indicate modification of existing user data in a reversible manner.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update-user Rate-limited

update-user 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-user": {
      "limits": [
        {
          "counter": "update-user_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Openfort MCP Server, so you can run agents against it safely.

FAQ

Questions about update-user

What does the update-user tool do? +

Update an existing user. It is categorised as a Write tool in the Openfort MCP Server 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-user? +

Register the Openfort MCP Server MCP server in PolicyLayer and add a rule for update-user: 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 Openfort MCP Server. Nothing to install.

What risk level is update-user? +

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

Can I rate-limit update-user? +

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

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

update-user is provided by the Openfort MCP Server MCP server (openfort-xyz/-deprecated-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.