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POST
/
advertisers
/
{advertiserId}
/
test-cohorts
Create test cohort
curl --request POST \
  --url https://api.interchange.io/api/v2/buyer/advertisers/{advertiserId}/test-cohorts \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "West Coast Treatment Group",
  "cohortType": "geographic",
  "definition": {
    "type": "zip_code"
  }
}
'
{
  "cohort": {
    "id": "cohort_abc123",
    "advertiserId": "12345",
    "name": "West Coast Treatment Group",
    "cohortType": "geographic",
    "role": "TREATMENT",
    "definition": {
      "type": "zip_code"
    },
    "isActive": true,
    "createdAt": "2025-01-15T10:30:00Z",
    "updatedAt": "2025-01-20T14:45:00Z",
    "description": "<string>",
    "estimatedSize": 50000
  }
}

Documentation Index

Fetch the complete documentation index at: https://docs.interchange.io/llms.txt

Use this file to discover all available pages before exploring further.

Authorizations

​
Authorization
string
header
required

API key or access token

Path Parameters

​
advertiserId
string
required

Unique identifier for the advertiser

Minimum string length: 1
Example:

"12345"

Body

application/json

Request body for creating a new test cohort

​
name
string
required

Name of the test cohort

Required string length: 1 - 255
Example:

"West Coast Treatment Group"

​
cohortType
string
required

Type classification for the cohort

Minimum string length: 1
Example:

"geographic"

​
definition
object
required

Cohort targeting definition

​
description
string

Optional description of the test cohort

Maximum string length: 1000
Example:

"Users in CA, OR, WA receiving full ad exposure"

​
role
enum<string>
default:TREATMENT

Role of the cohort in the test (default: TREATMENT)

Available options:
TREATMENT,
CONTROL,
OBSERVATION
​
estimatedSize
integer

Estimated number of users in this cohort

Required range: 0 <= x <= 9007199254740991
Example:

50000

Response

Create test cohort

Response containing a single test cohort

​
cohort
object
required

Test cohort resource representation