How to connect Mailchimp to Claude Code

1. 1. Enable Mailchimp in Metorial

   In your Metorial portal, enable the Mailchimp MCP server and sign in with the account that owns the data. Access stays governed by your team policies.

2. 2. Add the server over HTTP

   Add --scope user to use it in every project.

   Copy

   claude mcp add --transport http metorial <your-magic-mcp-url>

3. 3. Sign in

   Run /mcp, select Metorial and sign in to load Mailchimp tools.

• List Automations: Retrieve classic automation workflows from the Mailchimp account.
• Manage Campaign: Create, update, or delete an email campaign.
• Manage Template: Create, update, or delete an email template.
• List Campaigns: Retrieve campaigns from the Mailchimp account.
• List Members: Retrieve members (contacts) from an audience.
• Manage Audience: Create, update, or delete an audience (list).
• List Audiences: Retrieve all audiences (lists) in the Mailchimp account.
• Send Campaign: Send, schedule, unschedule, or cancel a campaign.
• Manage Segments: List, create, update, or delete segments within an audience.
• Get Audience Activity: Retrieve recent activity and growth history for an audience.
• Manage Campaign Content: Get or set the HTML/plain-text content of a campaign.
• Manage Member: Add, update, or remove a member (contact) in an audience.
• Manage Automation: Control a classic automation workflow: start, pause, or archive it.
• Add Member Event: Post a custom event for a list member.
• List Templates: Retrieve email templates from the Mailchimp account.
• And 6 more on the Mailchimp MCP server page.

• Mailchimp tools appear as mcp__metorial__<tool>. Use that name in permission rules to allow or deny a tool.
• Run /mcp to see whether Metorial is connected and to sign in again.
• Claude Code warns when a tool result passes 10,000 tokens and caps it at 25,000 by default. Raise the cap with MAX_MCP_OUTPUT_TOKENS.
• Pre-approve trusted Mailchimp tools with allow rules in your settings so Claude Code stops asking each time.

claude mcp list shows "Needs authentication"

Run /mcp, select Metorial, and sign in. If sign-in keeps failing, choose Clear authentication in the same menu and sign in again.

A teammate sees "Pending approval"

Servers shared through a project .mcp.json need approval. Run claude in the project and approve Metorial when asked.

Large tool results are cut off

Claude Code limits MCP tool output to 25,000 tokens by default. Raise it with the MAX_MCP_OUTPUT_TOKENS environment variable.

Based on the Claude Code MCP documentation.