Preview an existing queue buyer selection
The inspected OnlyFans client uses this endpoint with an existing queue/buyer selection. It is not the general list-audience preview. Do not use queueBuyers: [] to mean all…
The inspected OnlyFans client uses this endpoint with an existing queue/buyer selection. It is not the general list-audience preview. Do not use queueBuyers: [] to mean all subscribers. To preview the native Fans list without sending, use GET /api2/v2/chats/users with filter[list_id]=fans and total=1; read data.total. This POST is subject to allow_of_write_actions and can return WRITES_DISABLED even though it is a preview. Live execution of this POST was not verified in the 27 October 2026 check. OnlyFans only.
Authorization
apiKey Your CRM panel API key
In: header
Header Parameters
Creator account ID of the account to act as (e.g. 509955039). Required — omitting it returns 400 user-id header is required. Use GET /accounts to list your connected accounts. On /api2/v2/* the account must be an OnlyFans account; Fansly accounts are rejected there.
Proxy URL — HTTP or SOCKS5 (e.g. http://user:pass@host:port or socks5://user:pass@host:port). Optional on post-connection routes, where it overrides the proxy saved at login time. Required on the connection routes (POST /accounts/login, POST /accounts/login/cookies, POST /accounts/login/verify-otp) for OnlyFans accounts; optional for Fansly.
Request Body
application/json
TypeScript Definitions
Use the request body type in TypeScript.
Response Body
application/json
curl -X POST "https://example.com/api2/v2/messages/queue/size" \ -H "user-id: 509955039" \ -H "Content-Type: application/json" \ -d '{}'{ "size": 0}