Send Basic Text Messages

Use this endpoint to send a message to a specific WhatsApp group by providing the group ID.

---

Parameters

Name	Type	Required	Description
group_id	string	Yes	The WhatsApp group JID (example: 12345@g.us).
message	string	Yes	Text content of the message. Required for text, buttons, interactive, and optional for others.
message_type	string	Yes	Type of message to send. One of: text, image, video, audio, document, location, buttons, interactive.
media_url	string	No	URL of media file (image/video/audio/document) to send, depending on message_type.
file_name	string	No	File name for documents (e.g. document.pdf).
mimetype	string	No	MIME type of media, e.g., image/jpeg, video/mp4, audio/mp4, application/pdf.
latitude	number	No	Latitude coordinate for location messages.
longitude	number	No	Longitude coordinate for location messages.
buttons	array	No	Array of button objects for interactive messages. Each button should have buttonId and displayText.
quoted_message_id	string	No	ID of the message to quote (reply to).
quoted_message	string	No	Fallback text content for the quoted message if the original message is not found in the store.

API Endpoint

POST https://app.rapiwa.com/api/group/send-message

Header

Content-Type: application/json
Authorization: Bearer Your_Device_Key

Body

{
  "group_id": "XXXXXXXXXXXX",
  "message_type": "text",
  "message": "Hello!"
}

###Response:

{
    "success": true,
    "message_type": "text",
    "message_id": "3EB0FAC204D805F0E22293",
    "to": "XXXXXXXXXXXXX"
}

Code examples

bash

curl -X POST "https://app.rapiwa.com/api/group/send-message" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer Your_Device_Key" \
  -d '{"group_id":"XXXXXXXXXXXX","message_type":"text","message":"Hello!"}'

python

import requests
url = "https://app.rapiwa.com/api/group/send-message"
headers = {"Content-Type": "application/json", "Authorization": "Bearer Your_Device_Key"}
payload = {"group_id": "XXXXXXXXXXXX", "message_type": "text", "message": "Hello!"}
requests.post(url, json=payload, headers=headers)

javascript

await fetch('https://app.rapiwa.com/api/group/send-message', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json', 'Authorization': 'Bearer Your_Device_Key' },
  body: JSON.stringify({ group_id: 'XXXXXXXXXXXX', message_type: 'text', message: 'Hello!' })
});

php

<?php
$data = ['group_id' => 'XXXXXXXXXXXX', 'message_type' => 'text', 'message' => 'Hello!'];
$options = ['http' => ['header' => "Content-Type: application/json\r\nAuthorization: Bearer Your_Device_Key\r\n", 'method' => 'POST', 'content' => json_encode($data)]];
file_get_contents('https://app.rapiwa.com/api/group/send-message', false, stream_context_create($options));

ruby

require 'net/http'
require 'json'
uri = URI('https://app.rapiwa.com/api/group/send-message')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request['Authorization'] = 'Bearer Your_Device_Key'
request.body = { group_id: 'XXXXXXXXXXXX', message_type: 'text', message: 'Hello!' }.to_json
Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) { |h| h.request(request) }

go

payload := map[string]string{"group_id": "XXXXXXXXXXXX", "message_type": "text", "message": "Hello!"}
body, _ := json.Marshal(payload)
req, _ := http.NewRequest("POST", "https://app.rapiwa.com/api/group/send-message", bytes.NewBuffer(body))
req.Header.Set("Content-Type", "application/json")
req.Header.Set("Authorization", "Bearer Your_Device_Key")
http.DefaultClient.Do(req)

csharp

var payload = new { group_id = "XXXXXXXXXXXX", message_type = "text", message = "Hello!" };
var content = new StringContent(JsonSerializer.Serialize(payload), Encoding.UTF8, "application/json");
client.DefaultRequestHeaders.Add("Authorization", "Bearer Your_Device_Key");
await client.PostAsync("https://app.rapiwa.com/api/group/send-message", content);

java

HttpRequest.newBuilder()
    .uri(URI.create("https://app.rapiwa.com/api/group/send-message"))
    .header("Content-Type", "application/json")
    .header("Authorization", "Bearer Your_Device_Key")
    .method("POST", HttpRequest.BodyPublishers.ofString("{\"group_id\":\"XXXXXXXXXXXX\",\"message_type\":\"text\",\"message\":\"Hello!\"}"))
    .build();

swift

var request = URLRequest(url: URL(string: "https://app.rapiwa.com/api/group/send-message")!)
request.httpMethod = "POST"
request.setValue("application/json", forHTTPHeaderField: "Content-Type")
request.setValue("Bearer Your_Device_Key", forHTTPHeaderField: "Authorization")
request.httpBody = try? JSONEncoder().encode(["group_id": "XXXXXXXXXXXX", "message_type": "text", "message": "Hello!"])
URLSession.shared.dataTask(with: request).resume()

powershell

$body = @{ group_id = "XXXXXXXXXXXX"; message_type = "text"; message = "Hello!" } | ConvertTo-Json
Invoke-RestMethod -Uri "https://app.rapiwa.com/api/group/send-message" -Method Post -Headers @{"Content-Type"="application/json"; "Authorization"="Bearer Your_Device_Key"} -Body $body

typescript

await fetch('https://app.rapiwa.com/api/group/send-message', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json', 'Authorization': 'Bearer Your_Device_Key' },
  body: JSON.stringify({ group_id: 'XXXXXXXXXXXX', message_type: 'text', message: 'Hello!' })
});

rust

let payload = json!({"group_id": "XXXXXXXXXXXX", "message_type": "text", "message": "Hello!"});
client.post("https://app.rapiwa.com/api/group/send-message").header("Authorization", "Bearer Your_Device_Key").json(&payload).send().await?;

💡 Tip: Keep your Device Key secure. Never share it publicly.

Contributors: Mannan Zinnat