bulk_add_domains · TrekMail MCP Server MCP: Risk & Policy

WHAT IT DOES

What bulk_add_domains does on TrekMail MCP Server

AI agents use bulk_add_domains 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 bulk_add_domains needs a policy

This tool creates/registers multiple domains in the email infrastructure system. While domain addition modifies configuration state, it is typically reversible (domains can be removed or unregistered), making it Write rather than Destructive.

From the tool's definition Tool name 'bulk_add_domains' indicates creation of multiple domains. Description states 'Add multiple domains at once (up to 20)' with per-domain success/error status tracking, indicating reversible creation/addition operations on infrastructure configuration.

Risk signalsBulk/mass operation — affects multiple targets

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

bulk_add_domains Rate-limited

bulk_add_domains 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": {
    "bulk_add_domains": {
      "limits": [
        {
          "counter": "bulk_add_domains_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 TrekMail MCP Server, so you can run agents against it safely.

FAQ

Questions about bulk_add_domains

What does the bulk_add_domains tool do? +

Add multiple domains at once (up to 20). Returns per-domain results with success/error status. 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 bulk_add_domains? +

Register the TrekMail MCP Server MCP server in PolicyLayer and add a rule for bulk_add_domains: 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 bulk_add_domains? +

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

Can I rate-limit bulk_add_domains? +

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

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

bulk_add_domains 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.