update_department · 3CX MCP Server MCP: Risk & Policy

WHAT IT DOES

What update_department does on 3CX MCP Server

AI agents use update_department to create or update resources in 3CX MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your 3CX MCP Server environment.

WHY IT NEEDS A POLICY

Why update_department needs a policy

Update operations that modify existing data configurations reversibly fall under Write category. While the [DESTRUCTIVE] tag is present in the description, the actual functionality described (updating specific fields) is reversible: a subsequent update call could restore previous values. True destructive operations would irreversibly remove the department or prevent recovery.

From the tool's definition Tool description states 'Updates a 3CX department by its numeric Id. Only provided fields are changed.' This is a modification operation that reverses existing department configuration.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_department Rate-limited

update_department 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_department": {
      "limits": [
        {
          "counter": "update_department_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches 3CX MCP Server, so you can run agents against it safely.

FAQ

Questions about update_department

What does the update_department tool do? +

[DESTRUCTIVE] Updates a 3CX department by its numeric Id. Get the Id from list_departments first. Only provided fields are changed. It is categorised as a Write tool in the 3CX 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_department? +

Register the 3CX MCP Server MCP server in PolicyLayer and add a rule for update_department: 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 3CX MCP Server. Nothing to install.

What risk level is update_department? +

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

Can I rate-limit update_department? +

Yes. Add a rate_limit block to the update_department 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_department completely? +

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

update_department is provided by the 3CX MCP Server MCP server (ssig-it/3cx-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.