Subscriber API
Subscriber Assign Labels
Assign one or more labels to a subscriber via the ChatSyncs API, using comma-separated label IDs. Use when a developer asks how to tag/segment subscribers programmatically.
POST
Assign Labels
Assigns one or more labels to a subscriber.
label_ids is a comma-separated list such as 12,15. A list separated by spaces, or a JSON array, is rejected with
No labels found. If some ids are valid and some aren’t, the valid ones are applied and the call still succeeds.Body
application/x-www-form-urlencoded
Your ChatSyncs API key (not a WhatsApp/Meta access token). Where to find it.
Example:
"API-KEY"
The WhatsApp account's phone number ID. Where to find it.
Example:
"PHONE-NUMBER-ID"
The subscriber's phone number, with country code, digits only.
Example:
"PHONE-NUMBER"
Comma-separated label IDs, e.g. 1,4,5. Where to find it.
Example:
"1,4,5"

