unblock_client · UniFi MCP Server MCP: Risk & Policy

WHAT IT DOES

What unblock_client does on UniFi MCP Server

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

WHY IT NEEDS A POLICY

Why unblock_client needs a policy

Unblocking a client reverses a prior block action, restoring network access. This is a reversible modification of network access policy, fitting the Write category. It is not destructive (nothing is deleted), not financial, and not merely a read operation. Severity is medium because granting network access to a blocked device could have security implications, but the action is reversible.

From the tool's definition Unblock a previously blocked client device

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

unblock_client Rate-limited

unblock_client 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": {
    "unblock_client": {
      "limits": [
        {
          "counter": "unblock_client_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 UniFi MCP Server, so you can run agents against it safely.

FAQ

Questions about unblock_client

What does the unblock_client tool do? +

Unblock a previously blocked client device. It is categorised as a Write tool in the UniFi 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 unblock_client? +

Register the UniFi MCP Server MCP server in PolicyLayer and add a rule for unblock_client: 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 UniFi MCP Server. Nothing to install.

What risk level is unblock_client? +

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

Can I rate-limit unblock_client? +

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

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

unblock_client is provided by the UniFi MCP Server MCP server (nathan-bw/unifi-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.