addBulkContactToList · Mailmodo MCP: Risk & Policy

WHAT IT DOES

What addBulkContactToList does on Mailmodo

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

WHY IT NEEDS A POLICY

Why addBulkContactToList needs a policy

This tool creates or modifies data (adds contacts to a mailing list) in a reversible manner. It does not delete data, execute arbitrary code, or move money, making it a Write operation. The severity is medium because bulk operations on contact lists could enable spam, unauthorized marketing, or data pollution, but the impact is limited to list membership changes without permanent destruction.

From the tool's definition Tool name 'addBulkContactToList' and description 'Add Many Contact to a list in single API' indicate creation/addition of multiple contacts to an existing list.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

addBulkContactToList Rate-limited

addBulkContactToList 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": {
    "addBulkContactToList": {
      "limits": [
        {
          "counter": "addbulkcontacttolist_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 Mailmodo, so you can run agents against it safely.

FAQ

Questions about addBulkContactToList

What does the addBulkContactToList tool do? +

Add Many Contact to a list in single API. It is categorised as a Write tool in the Mailmodo MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on addBulkContactToList? +

Register the Mailmodo MCP server in PolicyLayer and add a rule for addBulkContactToList: 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 Mailmodo. Nothing to install.

What risk level is addBulkContactToList? +

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

Can I rate-limit addBulkContactToList? +

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

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

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