send_campaign

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/send-campaign.md

WHAT IT DOES

What send_campaign does on Mailchimp MCP

AI agents use send_campaign 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 send_campaign is rated Medium

Sending a campaign creates external effects (emails dispatched to recipients) that are difficult to recall entirely once sent, though technically emails can be unsent in some systems. This falls into Write rather than Execute because it triggers a pre-configured campaign action rather than arbitrary code execution.

From the tool's definition Tool name 'send_campaign' indicates sending a marketing campaign through Mailchimp; sibling tools on the server include 'add_member', 'create_campaign', 'create_batch', and 'batch_subscribe', contextualizing this as email marketing operation.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

send_campaign Rate-limited

send_campaign 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": {
    "send_campaign": {
      "limits": [
        {
          "counter": "send_campaign_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 send_campaign call is checked against it from then on.

FAQ

Questions about send_campaign

What does the send_campaign tool do? +

send_campaign 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 send_campaign? +

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

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

Can I rate-limit send_campaign? +

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

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

send_campaign 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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