For AI agents: a documentation index is available at the root level at /llms.txt. Append /llms.txt to any URL for a page-level index, or .md for the markdown version of any page.
Authorization using a Mailchimp API key (a.k.a. Bearer token)
OR
AuthorizationBearer
Authorization using OAuth
Path parameters
list_idstringRequired
The unique ID for the list.
subscriber_hashstringRequired
The MD5 hash of the lowercase version of the list member's email address. This endpoint also accepts a list member's email address or contact_id.
Query parameters
skip_merge_validationbooleanOptional
If skip_merge_validation is true, member data will be accepted without merge field values, even if the merge field is usually required. This defaults to false.
Request
Individuals who are currently or have been previously subscribed to this list, including members who have bounced or unsubscribed.
email_addressstringRequired
Email address for a subscriber. This value is required only if the email address is not already present on the list.
email_typestringOptional
Type of email this member asked to get ('html' or 'text').
interestsmap from strings to booleansOptional
The key of this object's properties is the ID of the interest in question.
ip_optstringOptional
The IP address the subscriber used to confirm their opt-in status.
Indicates whether a contact consents to 1:1 messaging.
contact_idstringOptionalRead-only
As Mailchimp evolves beyond email, you may eventually have contacts without email addresses. While the id is the MD5 hash of their email address, this contact_id is agnostic of contact’s inclusion of an email address.
email_addressstringOptional
Email address for a subscriber.
email_clientstringOptionalRead-only
The list member's email client.
email_typeanyOptional
Type of email this member asked to get ('html' or 'text').
idstringOptionalRead-only
The MD5 hash of the lowercase version of the list member's email address.
interestsmap from strings to booleansOptional
The key of this object's properties is the ID of the interest in question.
ip_optstringOptionalRead-only
The IP address the subscriber used to confirm their opt-in status.
The ID used in the Mailchimp web application. View this member in your Mailchimp account at https://{dc}.admin.mailchimp.com/lists/members/view?id={web_id}.