create_batch

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/create-batch.md

WHAT IT DOES

What create_batch does on Mailchimp MCP

AI agents use create_batch 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 create_batch is rated Medium

The tool creates or modifies data (batch records, likely subscribers or campaign data) in Mailchimp with side effects that are reversible. This is Write-category severity. High severity because batch operations at scale could affect thousands of records and cause significant operational disruption if misused by an AI agent.

From the tool's definition Tool name 'create_batch' in Mailchimp MCP context with sibling operations like 'batch_subscribe', 'add_members_to_segment', and 'add_member' that all create/modify mailing list data.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs create_batch 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 create_batch, this is the rule to start with:

create_batch Rate-limited

create_batch 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": {
    "create_batch": {
      "limits": [
        {
          "counter": "create_batch_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 create_batch call is checked against it from then on.

FAQ

Questions about create_batch

What does the create_batch tool do? +

create_batch 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 create_batch? +

Register the Mailchimp MCP server in PolicyLayer and add a rule for create_batch: 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 create_batch? +

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

Can I rate-limit create_batch? +

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

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

create_batch 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.

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