{"resource":"https://wtsp.dev/v1/exists","service":"wtsp.dev","areas":["other"],"answering":true,"http_status":402,"latency_ms":404,"price_usdc":0.004,"buyers_30d":1,"calls_30d":1,"description":"Whether a number has a WhatsApp account, and nothing else: the cheapest way to clean a list before paying for profiles. /v1/profile gives the same answer plus the account's details. Query param: phone, with country code (e.g. +14155552671).","id":"44ab64bcfb74","category":"Payments and on-ramps","accuracy":null,"tool_calls":null,"checked_day":"2026-10-11","page":"https://velliumandco.com/sellers/44ab64bcfb74"}