Create a list

POST

/lists

curl --request POST \
  --url https://app.whatsetter.com/api/v1/lists \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{ "name": "CRM sync, hot leads" }'

• Production

Creates an empty list you can then push leads into. A workspace holds at most 200 lists (429 quota_exceeded beyond that: delete unused lists first). Requires scope lists:write.

Authorizations

• bearerAuth

Request Body^required

Media typeapplication/json

object

name

required

string

<= 255 characters

Responses

201

Created

Media typeapplication/json

object

data

object

id

string

name

string | null

status

string | null

total_rows

integer

valid_leads

integer

invalid_leads

integer

created_at

string format: date-time

Example^generated

{
  "data": {
    "id": "example",
    "name": "example",
    "status": "example",
    "total_rows": 1,
    "valid_leads": 1,
    "invalid_leads": 1,
    "created_at": "2026-04-15T12:00:00Z"
  }
}

401

Missing, unknown or revoked API key

Media typeapplication/json

object

error

object

code

string

message

string

Example^generated

{
  "error": {
    "code": "example",
    "message": "example"
  }
}

422

Invalid parameter or body (also an invalid or expired cursor)

Media typeapplication/json

object

error

object

code

string

message

string

Example^generated

{
  "error": {
    "code": "example",
    "message": "example"
  }
}

429

The workspace already holds 200 lists

Media typeapplication/json

object

error

object

code

string

message

string

Example

{
  "error": {
    "code": "quota_exceeded",
    "message": "List limit reached (200 per workspace). Delete unused lists first."
  }
}