updateLists · Xdevplatform/x MCP: Risk & Policy

WHAT IT DOES

What updateLists does on Xdevplatform/xmcp

AI agents use updateLists to create or update resources in Xdevplatform/xmcp — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Xdevplatform/xmcp environment.

WHY IT NEEDS A POLICY

Why updateLists needs a policy

This tool modifies metadata and configuration of lists (name, description, privacy settings) but does not delete data or execute arbitrary code. Updates are reversible, placing it in the Write category. Severity is medium because unauthorized list updates could affect visibility and access controls, but the impact is limited to a single resource's properties.

From the tool's definition The tool name is `updateLists` and the description states it can 'Update a list name, description, or privacy setting.' These are reversible modifications to existing data structures.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

updateLists Rate-limited

updateLists 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": {
    "updateLists": {
      "limits": [
        {
          "counter": "updatelists_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 Xdevplatform/xmcp, so you can run agents against it safely.

FAQ

Questions about updateLists

What does the updateLists tool do? +

Update a list name, description, or privacy setting. It is categorised as a Write tool in the Xdevplatform/xmcp MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on updateLists? +

Register the Xdevplatform/x MCP server in PolicyLayer and add a rule for updateLists: 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 Xdevplatform/xmcp. Nothing to install.

What risk level is updateLists? +

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

Can I rate-limit updateLists? +

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

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

updateLists is provided by the Xdevplatform/x MCP server (xdevplatform/xmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.