flow api
Service · POST

checkWhatsapp

Check whether a phone number has a WhatsApp account before you message it.

Endpoint

POST https://flowapi.pro/waInstance{idInstance}/checkWhatsapp/{apiTokenInstance}

Request body

{
  "phoneNumber": 972501234567
}

Example

curl -X POST "https://flowapi.pro/waInstance{idInstance}/checkWhatsapp/{apiTokenInstance}" \
  -H "Content-Type: application/json" \
  -d '{"phoneNumber":972501234567}'

Response

{
  "existsWhatsapp": true
}

Notes

  • Check numbers one by one as you need them; mass-checking lists can get a number restricted.
Green API compatible. checkWhatsapp uses the same name, request body and response as Green API, so existing code works after you change the host to flowapi.pro. Errors: 401 wrong instance or token, 402 trial ended or number not covered by your plan, 400 with a message for anything else.

More service methods

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