flow api
Sending · POST

sendMessage

Send a text message to a person or a group. The most used method in every automation.

Endpoint

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

Request body 

{
  "chatId": "972501234567@c.us",
  "message": "Hello from FlowAPI",
  "quotedMessageId": ""
}

Example

curl -X POST "https://flowapi.pro/waInstance{idInstance}/sendMessage/{apiTokenInstance}" \
  -H "Content-Type: application/json" \
  -d '{"chatId":"972501234567@c.us","message":"Hello from FlowAPI","quotedMessageId":""}'

Response

{
  "idMessage": "3EB0C1A7F2D4E8B91C"
}

Notes

  • chatId is the phone number with country code plus @c.us, or a group id ending in @g.us.
  • Supports WhatsApp formatting: *bold*, _italic_, ~strike~ and line breaks.
  • Pass quotedMessageId to reply to a specific message.
Green API compatible. sendMessage 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 sending methods

sendFileByUrlsendFileByUploaduploadFilesendLocationsendContactsendPollforwardMessagessendInteractiveButtonssendTextStatussendTyping
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