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Tag a contact

Adds or removes tags on one audience contact, creating any active tag that doesn't exist yet.

Updated Sep 27, 2026

tag-list-member.md

Tag a contact

Adds or removes tags on one audience contact, creating any active tag that doesn't exist yet.

Note: Set is_syncing to true to keep automations based on these tags from firing.

Set up

Use the first option your agent supports.

API (official)

Note: {dc} is your data center, the part of the API key after the dash, such as us6.

Before anything else, confirm access with the cheapest read-only call, like a list or a search. Never send or change anything to test access.

Rules

  • Ask the user before anything that sends messages, costs money, or changes data, and say how many records it touches. One approval covers a batch the user has seen.
  • Never print API keys.

Ways in

RouteSourceCallRequiredDocs
APIOfficialPOST /lists/{list_id}/members/{subscriber_hash}/tagsAPI key in $MAILCHIMP_API_KEYDocs

Workflows using Tag a contact

No workflows yet
No published workflow uses Tag a contact yet.