List Segments
GET
/api/v3/audience/segments
List your custom audience segments across all of your channels. At present, our API doesn’t include dynamic segments that Letterhead provides. Our v3 API requires a company-level API key.
Authorizations
Section titled “Authorizations ”Parameters
Section titled “ Parameters ”Query Parameters
Section titled “Query Parameters ” api
string
Example
trueResponses
Section titled “ Responses ”List Segments
Media type text/plain
Examples
Example List Segments
{ "items": [ { "uniqueId": 1, "channel": "black-bitter-coffee", "name": "Testaroo", "createdAt": "2025-07-24 01:28:39", "updatedAt": "2025-11-15 03:00:31", "criteria": [ { "attribute": "tags", "category": "tags", "operator": "IN", "value": [ "Staff" ] }, { "attribute": "tags", "category": "tags", "operator": "IN", "value": [ "Border-collies" ] }, { "attribute": "age", "category": "commonFields", "operator": ">", "value": "3" } ], "isOrBoolean": false }, ], "message": "", "total": 1}Headers
Section titled “Headers ” Alt-Svc
string
Example
h3=":443"; ma=2592000 Transfer-Encoding
string
Example
chunked access-control-allow-credentials
string
Example
true access-control-allow-origin
string
Example
* access-control-max-age
string
Example
86400 cache-control
string
Example
no-cache, private date
string
Example
Thu, 16 Apr 2026 19:04:43 GMT server
string
Example
nginx/1.27.3 via
string
Example
1.1 google x-powered-by
string
Example
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