generated: '2026-06-20'
method: searched
status: published
source: https://mailchimp.com/developer/transactional/guides/how-to-use-mailchimps-transactional-messaging-mcp/
description: Mailchimp publishes an official hosted MCP server for the Transactional (Mandrill) Messaging
  API. It exposes nine tools that mirror what the Transactional API can already do, plus onboarding/diagnosis
  helpers. There is no official Mailchimp Marketing API MCP server (only third-party implementations exist),
  so the Marketing surface is left as a derived candidate below.
servers:
- name: mailchimp-transactional
  api: mailchimp:mailchimp-transactional-api
  transport: http
  url: https://mandrillapp.com/mcp
  authentication:
    type: bearer
    detail: API key passed as a Bearer token in the Authorization header.
  status: published
  tools:
  - name: account_status
    description: Check Transactional account status.
  - name: build_template
    description: Build/construct a message template.
  - name: call_api
    description: Call a Transactional Messaging API endpoint.
  - name: describe_api
    description: Describe a specific API endpoint (parameters, schema).
  - name: diagnose_failed_send
    description: Diagnose why a message send failed.
  - name: integrate_api
    description: Guidance for integrating with the Transactional API.
  - name: list_api
    description: List available Transactional Messaging API endpoints.
  - name: onboarding
    description: Onboarding assistance for Transactional Messaging.
  - name: submit_feedback
    description: Submit feedback to Mailchimp.
- name: mailchimp-marketing
  api: mailchimp:mailchimp-marketing-api
  transport: http
  status: candidate
  source_note: No official Mailchimp Marketing MCP server is published. The tools below are a derived
    candidate set mapped from marquee Marketing API operations in openapi/mailchimp-marketing-api-openapi.yml
    (one tool per operation). This is a starting point, not a provider claim.
  tools:
  - name: list_audiences
    description: List audiences (lists) in the account.
    source_operation: openapi/mailchimp-marketing-api-openapi.yml#getLists
  - name: add_or_update_member
    description: Add or update an audience member.
    source_operation: openapi/mailchimp-marketing-api-openapi.yml#putListsIdMembersId
  - name: add_member_tags
    description: Add or remove tags on an audience member.
    source_operation: openapi/mailchimp-marketing-api-openapi.yml#postListMemberTags
  - name: create_campaign
    description: Create a campaign.
    source_operation: openapi/mailchimp-marketing-api-openapi.yml#postCampaigns
  - name: set_campaign_content
    description: Set the HTML/content of a campaign.
    source_operation: openapi/mailchimp-marketing-api-openapi.yml#putCampaignsIdContent
  - name: send_campaign
    description: Send a campaign.
    source_operation: openapi/mailchimp-marketing-api-openapi.yml#postCampaignsIdActionsSend
  - name: get_campaign_report
    description: Get the report for a campaign.
    source_operation: openapi/mailchimp-marketing-api-openapi.yml#getReportsId
  - name: list_automations
    description: List automation workflows.
    source_operation: openapi/mailchimp-marketing-api-openapi.yml#getAutomations
deployment:
  mode: remote
  endpoint: https://mandrillapp.com/mcp
  verified: probed
  probe: live
  checked: '2026-08-12'
  source: catalog MCP census