--- title: "Connect Mailchimp to Hypamoon" description: "Mailchimp has an open API. See what you can build with it in Hypamoon, how it signs in, and the sources we checked." url: https://hypamoon.com/connect-to/mailchimp --- 1. [Connect to](https://hypamoon.com/connect-to) 2. Mailchimp Email marketing # Connect Mailchimp to Hypamoon Yes. Mailchimp has a public, versioned API and you create the key yourself, so your chat can write the adapter. Open ## The check Three questions about the API of Mailchimp, answered from its own docs. **Public API docs**\ **Yes.** [Read the docs](https://mailchimp.com/developer/marketing/guides/quick-start/) **A key you create yourself**\ **Yes.** Generate an API key under your profile, or register an OAuth app for other accounts. [mailchimp.com](https://mailchimp.com/developer/marketing/build/get-started/generate-your-api-key) **Versions or a changelog**\ **Yes.** Marketing API 3.0 with release notes. [mailchimp.com](https://mailchimp.com/developer/release-notes) **How it signs in**\ API key you generate yourself, sent with basic auth or as a Bearer token. OAuth 2.0 is for access to other people's accounts. **Webhooks**\ **Yes.** It can tell your app when something changes. [mailchimp.com](https://mailchimp.com/developer/marketing/api/list-webhooks/) **Hosting**\ Cloud ## What you can build Look up audiences, contacts and campaign results, and add or update contacts from your chat. Your chat writes it as a Hypamoon adapter from the docs above. Reading starts after you click Allow in the portal, and every write waits for your approval, one call at a time. [How adapters work](https://hypamoon.com/docs/adapters) ### Good to know - Your adapter uses a fixed key: you paste it once in the Hypamoon portal, never in the chat, and it only goes to the API host you allow. - API keys created since June 22, 2026 expire after one year. At most 10 simultaneous connections per user. ## Try it in your chat Fill in what to read and write, and send it. Say this in your chat > Build the Hypamoon recipe build-an-adapter for Mailchimp. API docs: https://mailchimp.com/developer/marketing/guides/quick-start/. Read: \[what\]. Write: \[what, or nothing\]. [Open in Claude](https://claude.ai/new?q=Build%20the%20Hypamoon%20recipe%20build-an-adapter%20for%20Mailchimp.%20API%20docs%3A%20https%3A%2F%2Fmailchimp.com%2Fdeveloper%2Fmarketing%2Fguides%2Fquick-start%2F.%20Read%3A%20%5Bwhat%5D.%20Write%3A%20%5Bwhat%2C%20or%20nothing%5D.) In Claude, or another chat with the full Hypamoon connection; adapters are not in ChatGPT yet. You paste the key in the portal, never in the chat. [The full recipe](https://hypamoon.com/r/build-an-adapter) ## Sources Checked on 1 November 2026. - [mailchimp.com/developer/marketing/guides/quick-start/](https://mailchimp.com/developer/marketing/guides/quick-start/) - [mailchimp.com/developer/marketing/build/get-started/generate-your-api-key](https://mailchimp.com/developer/marketing/build/get-started/generate-your-api-key) - [mailchimp.com/developer/release-notes](https://mailchimp.com/developer/release-notes) - [mailchimp.com/developer/marketing/api/list-webhooks/](https://mailchimp.com/developer/marketing/api/list-webhooks/) Mailchimp is a name of its owner, used here only to describe the software. This page is not an official integration and Hypamoon has no partnership with Mailchimp. Found something that changed? Tell us at [support](https://hypamoon.com/support#contact). ## More in email marketing - [**ActiveCampaign** Open](https://hypamoon.com/connect-to/activecampaign) - [**Brevo** Open](https://hypamoon.com/connect-to/brevo) - [**Campaign Monitor** Open](https://hypamoon.com/connect-to/campaign-monitor) - [**Constant Contact** Open](https://hypamoon.com/connect-to/constant-contact) - [**Customer.io** Open](https://hypamoon.com/connect-to/customer-io) - [**Klaviyo** Open](https://hypamoon.com/connect-to/klaviyo) - [**Laposta** Open](https://hypamoon.com/connect-to/laposta) - [**MailerLite** Open](https://hypamoon.com/connect-to/mailerlite) - [**Marketo Engage** Open](https://hypamoon.com/connect-to/marketo-engage) - [**Omnisend** Open](https://hypamoon.com/connect-to/omnisend) - [**Salesforce Account Engagement (Pardot)** Open](https://hypamoon.com/connect-to/salesforce-account-engagement) [All 267 tools](https://hypamoon.com/connect-to) ## Tool not listed? Ask the chat to check its API. The same three checks work for any software. Your chat reads the vendor's own docs and tells you what it found. Say this in your chat > Check if \[software\] has an open API that a Hypamoon adapter can use: public API docs, a key or token I can create myself without asking the vendor, and versions or a changelog. Link the pages you used. [Open in Claude](https://claude.ai/new?q=Check%20if%20%5Bsoftware%5D%20has%20an%20open%20API%20that%20a%20Hypamoon%20adapter%20can%20use%3A%20public%20API%20docs%2C%20a%20key%20or%20token%20I%20can%20create%20myself%20without%20asking%20the%20vendor%2C%20and%20versions%20or%20a%20changelog.%20Link%20the%20pages%20you%20used.) [Open in ChatGPT](https://chatgpt.com/?q=Check%20if%20%5Bsoftware%5D%20has%20an%20open%20API%20that%20a%20Hypamoon%20adapter%20can%20use%3A%20public%20API%20docs%2C%20a%20key%20or%20token%20I%20can%20create%20myself%20without%20asking%20the%20vendor%2C%20and%20versions%20or%20a%20changelog.%20Link%20the%20pages%20you%20used.) Fill in the name of your software. Checking needs no connection to Hypamoon. ## Ready to connect Mailchimp? Connect your chat once, then ask it to build the adapter. [Start free](https://app.hypamoon.com/?mode=signup&utm_source=connect-to&utm_campaign=mailchimp) Works in Claude and ChatGPT. [Add to Claude](https://hypamoon.com/connect?via=connect-to~mailchimp#claude) [Add to ChatGPT](https://hypamoon.com/connect?via=connect-to~mailchimp#chatgpt)