close_ticket · TrekMail MCP Server MCP: Risk & Policy

WHAT IT DOES

What close_ticket does on TrekMail MCP Server

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

WHY IT NEEDS A POLICY

Why close_ticket needs a policy

The tool closes a support ticket, which is a state modification operation. This is a Write action rather than Execute, Destructive, or Financial because: (1) closing a ticket is reversible (it can typically be reopened), (2) it modifies metadata/status rather than deleting data, (3) the operation itself is straightforward and not executing arbitrary code or triggering complex external operations.

From the tool's definition close_ticket - Close a support ticket. Cannot close an already-closed ticket. The tool modifies the state of a ticket object (from open to closed) which is a reversible change.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

close_ticket Rate-limited

close_ticket 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": {
    "close_ticket": {
      "limits": [
        {
          "counter": "close_ticket_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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

FAQ

Questions about close_ticket

What does the close_ticket tool do? +

Close a support ticket. Cannot close an already-closed ticket. It is categorised as a Write tool in the TrekMail 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 close_ticket? +

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

What risk level is close_ticket? +

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

Can I rate-limit close_ticket? +

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

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

close_ticket is provided by the TrekMail MCP Server MCP server (trekmail/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.