batch_subscribe

A write tool on the Mailchimp MCP server.

SERVERMailchimp MCP SOURCEdamientilman/mailchimp-mcp-server

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/damientilman-mailchimp-mcp-server/batch-subscribe.md

WHAT IT DOES

What batch_subscribe does on Mailchimp MCP

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

RISK

Why batch_subscribe is rated Medium

Based on the tool name and Mailchimp context, 'batch_subscribe' likely creates or updates multiple subscriber records in a Mailchimp audience, which is a Write operation. The empty description lowers confidence. Severity is medium due to the potential blast radius of bulk-modifying subscriber data. It does not appear destructive, financial, or executable in nature.

From the tool's definition Tool name 'batch_subscribe' and server context (Mailchimp MCP) suggest bulk subscription of members to a list; description is empty providing no further detail.

Risk signalsBulk/mass operation — affects multiple targets

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs batch_subscribe safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Mailchimp MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For batch_subscribe, this is the rule to start with:

batch_subscribe Rate-limited

batch_subscribe 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": {
    "batch_subscribe": {
      "limits": [
        {
          "counter": "batch_subscribe_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Mailchimp MCP, apply this rule, and every batch_subscribe call is checked against it from then on.

FAQ

Questions about batch_subscribe

What does the batch_subscribe tool do? +

batch_subscribe is a write tool on the Mailchimp MCP server. It is categorised as a Write tool in the Mailchimp MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on batch_subscribe? +

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

What risk level is batch_subscribe? +

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

Can I rate-limit batch_subscribe? +

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

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

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

KEEP EXPLORING

More on Mailchimp, and thousands of servers like it.

This server

All 227 Mailchimp tools →

Across the catalogue

The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →