Mailchimp MCP Server - install, status & alternatives [2026]

01 · Install Mailchimp MCP Server

before you install - you'll need

Set MCP_TRANSPORT_TYPE, MCP_LOG_LEVEL, MAILCHIMP_API_KEY, MAILCHIMP_ASSETS_DIR, MAILCHIMP_TEMPLATES_DIR before connecting.

Claude Code

claude mcp add cyanheads-mailchimp-mcp-server -- npx -y @cyanheads/mailchimp-mcp-server

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "cyanheads-mailchimp-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/mailchimp-mcp-server"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license Apache-2.0 - declared in the repository

npm package @cyanheads/mailchimp-mcp-server - published under the repo owner's npm scope (@cyanheads)

registry namespace io.github.cyanheads is GitHub-verified and matches the repo owner

03 · What Mailchimp MCP Server can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

What you can build

With this server connected, an agent can manage audiences (lists) - read, create/update, per-audience analytics, signup-form config. No delete, add or update a subscriber idempotently with status, merge fields, tags, and optional note, read + create/update custom subscriber attributes. No delete - drops data across all subscribers, and read a structured procedural playbook merged with live account state. Advice-only, no writes.

Capability map

Tools grouped from the project's README - what Mailchimp MCP Server lets an agent do.

Mailchimp

18 tools - e.g. Account profile, plan, data center, total subscribers, and the Chimp Chatter activity feed.; Manage audiences (lists) - read, create/update, per-audience analytics, signup-form config. No delete.…

mailchimp_account · mailchimp_audiences · mailchimp_audience_overview · mailchimp_subscribers · mailchimp_upsert_subscriber · mailchimp_find_subscriber…

Overrides

1 tool - e.g. subject, from name, reply-to, audience, segment, content

Overrides

Engagement

1 tool - e.g. opens, clicks, unsubscribes

Engagement

Latest releases

v0.3.8 · 2026-08-22

Re-entrant campaign confirmation and MCP SDK v2 · Campaign send and replicate now request confirmation before mutation, resume accepted input once, and leave declined or cancelled work as a draft. · MCP SDK v2 adds…

v0.3.7 · 2026-06-16

server instructions, plugin identity cleanup · Maintenance release: server-level client instructions, plugin display-identity cleanup, and a dependency refresh. · Added: · Server instructions on createApp() - orients…

v0.3.6 · 2026-06-12

mcp-ts-core ^0.10.6, server identity, plugin manifests · Maintenance release: framework refresh to @cyanheads/mcp-ts-core ^0.10.6, explicit server identity, plugin manifests, and packaging cleanup. · Dependency bumps…

04 · Who maintains Mailchimp MCP Server

mailchimp-mcp-server is maintained by cyanheads. We track 125 MCP servers from cyanheads - 119 actively maintained, 1,816 combined GitHub stars, oldest repo from Dec 2024. Full record: all servers from cyanheads.

05 · Facts

repository: github.com/cyanheads/mailchimp-mcp-server
category: email - ranked #35 of 90 actively-maintained email servers as of 2026-09-18.
release cadence: 1 release in the last 90 days (latest 2026-08-22)
registry: io.github.cyanheads/mailchimp-mcp-server (active, first published 2026-04-20 · 17 versions)
packages: npm:@cyanheads/mailchimp-mcp-server · npm:@cyanheads/mailchimp-mcp-server

06 · Mailchimp MCP Server FAQ

Is Mailchimp MCP Server still maintained?

Yes - as of 2026-09-18, its last commit was 2026-08-22 and it shipped 1 release in the last 90 days. We re-verify nightly.

What can Mailchimp MCP Server do?

With this server connected, an agent can manage audiences (lists) - read, create/update, per-audience analytics, signup-form config. No delete, add or update a subscriber idempotently with status, merge fields, tags, and optional note, read + create/update custom subscriber attributes. No delete - drops data across all subscribers, and read a structured procedural playbook merged with live account state. Advice-only, no writes.

How do I install Mailchimp MCP Server?

Run `npx -y @cyanheads/mailchimp-mcp-server`. The README documents 5 environment variables (MCP_TRANSPORT_TYPE, MCP_LOG_LEVEL, MAILCHIMP_API_KEY…) to set first. Set MCP_TRANSPORT_TYPE, MCP_LOG_LEVEL, MAILCHIMP_API_KEY, MAILCHIMP_ASSETS_DIR, MAILCHIMP_TEMPLATES_DIR before connecting. You can also paste the ready-made client config above.

Does Mailchimp MCP Server run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Mailchimp MCP Server

Alternatives to Mailchimp MCP Server

Maintained email servers if Mailchimp MCP Server isn't the fit.

More email MCP servers · Kit.com MCP Server · SendGrid MCP Server · DMARKOFF - DMARC, SPF & DKIM Analytics · Gmail (domdomegg) · Emailens MCP

More TypeScript MCP servers · Ts Core · Ts Template · Medical Codes MCP Server · Met Museum MCP Server · Noaa Cdo MCP Server · see all