curl --request POST \
--url https://app.hypersender.com/api/whatsapp/v2/{instance}/send-text \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"chatId": "[email protected]",
"text": "Hi there!",
"reply_to": "string",
"link_preview": false,
"link_preview_high_quality": false
}
'import requests
url = "https://app.hypersender.com/api/whatsapp/v2/{instance}/send-text"
payload = {
"chatId": "[email protected]",
"text": "Hi there!",
"reply_to": "string",
"link_preview": False,
"link_preview_high_quality": False
}
headers = {
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
body: JSON.stringify({
chatId: '[email protected]',
text: 'Hi there!',
reply_to: 'string',
link_preview: false,
link_preview_high_quality: false
})
};
fetch('https://app.hypersender.com/api/whatsapp/v2/{instance}/send-text', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://app.hypersender.com/api/whatsapp/v2/{instance}/send-text",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'chatId' => '[email protected]',
'text' => 'Hi there!',
'reply_to' => 'string',
'link_preview' => false,
'link_preview_high_quality' => false
]),
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: application/json"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://app.hypersender.com/api/whatsapp/v2/{instance}/send-text"
payload := strings.NewReader("{\n \"chatId\": \"[email protected]\",\n \"text\": \"Hi there!\",\n \"reply_to\": \"string\",\n \"link_preview\": false,\n \"link_preview_high_quality\": false\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://app.hypersender.com/api/whatsapp/v2/{instance}/send-text")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"chatId\": \"[email protected]\",\n \"text\": \"Hi there!\",\n \"reply_to\": \"string\",\n \"link_preview\": false,\n \"link_preview_high_quality\": false\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://app.hypersender.com/api/whatsapp/v2/{instance}/send-text")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"chatId\": \"[email protected]\",\n \"text\": \"Hi there!\",\n \"reply_to\": \"string\",\n \"link_preview\": false,\n \"link_preview_high_quality\": false\n}"
response = http.request(request)
puts response.read_bodySend Text
Send plain text messages with link preview (optional) to WhatsApp users for basic communication, notifications, and automated messaging.
curl --request POST \
--url https://app.hypersender.com/api/whatsapp/v2/{instance}/send-text \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"chatId": "[email protected]",
"text": "Hi there!",
"reply_to": "string",
"link_preview": false,
"link_preview_high_quality": false
}
'import requests
url = "https://app.hypersender.com/api/whatsapp/v2/{instance}/send-text"
payload = {
"chatId": "[email protected]",
"text": "Hi there!",
"reply_to": "string",
"link_preview": False,
"link_preview_high_quality": False
}
headers = {
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
body: JSON.stringify({
chatId: '[email protected]',
text: 'Hi there!',
reply_to: 'string',
link_preview: false,
link_preview_high_quality: false
})
};
fetch('https://app.hypersender.com/api/whatsapp/v2/{instance}/send-text', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://app.hypersender.com/api/whatsapp/v2/{instance}/send-text",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'chatId' => '[email protected]',
'text' => 'Hi there!',
'reply_to' => 'string',
'link_preview' => false,
'link_preview_high_quality' => false
]),
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: application/json"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://app.hypersender.com/api/whatsapp/v2/{instance}/send-text"
payload := strings.NewReader("{\n \"chatId\": \"[email protected]\",\n \"text\": \"Hi there!\",\n \"reply_to\": \"string\",\n \"link_preview\": false,\n \"link_preview_high_quality\": false\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://app.hypersender.com/api/whatsapp/v2/{instance}/send-text")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"chatId\": \"[email protected]\",\n \"text\": \"Hi there!\",\n \"reply_to\": \"string\",\n \"link_preview\": false,\n \"link_preview_high_quality\": false\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://app.hypersender.com/api/whatsapp/v2/{instance}/send-text")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"chatId\": \"[email protected]\",\n \"text\": \"Hi there!\",\n \"reply_to\": \"string\",\n \"link_preview\": false,\n \"link_preview_high_quality\": false\n}"
response = http.request(request)
puts response.read_bodyWhat you need
- A Hypersender account with a WhatsApp instance connected in the dashboard. See the WhatsApp quick start.
- An API token and the instance UUID from your dashboard.
- The recipient’s
chatId; for a phone-number destination, use digits with the@c.ussuffix, such as[email protected]. See chatId formats.
Send a text message
Send the request from your server and keep the API token private.curl --request POST \
--url "https://app.hypersender.com/api/whatsapp/v2/${INSTANCE_ID}/send-text" \
--header "Authorization: Bearer ${HYPERSENDER_API_TOKEN}" \
--header "Accept: application/json" \
--header "Content-Type: application/json" \
--data '{
"chatId": "[email protected]",
"text": "Hello from Hypersender"
}'
chatId and text are required. Optional fields include reply_to, link_preview, and link_preview_high_quality.
Queued response
The API documentation describes an immediate queue acknowledgment:{
"queued": true,
"message": "Processing your request...",
"queued_request_uuid": "a0816120-7e37-4e8b-8cf3-92deb2cdc133",
"queued_request_link": "https://app.hypersender.com/api/whatsapp/v2/{instance}/queued-requests/a0816120-7e37-4e8b-8cf3-92deb2cdc133"
}
queued_request_link or Get Queued Request to check the processing result. Queueing does not guarantee delivery.
Common errors
The API specification documents these responses:| Status | Meaning | What to check |
|---|---|---|
404 | Not found | Confirm the instance UUID and destination chatId. |
422 | Validation error | Check required fields and the destination format. The spec also shows this for a number that is not on WhatsApp. |
500 | Server error | Review the response and check request status before retrying. |
response_status and response_body in the queued request result.
Rate limits
The current endpoint specification does not state a numeric request rate limit.Link previews
If the message contains a link, setlink_preview to true to request a preview. Set link_preview_high_quality to true to request a high-quality preview.

send-text-safe endpoint has its own reference.
Quick Demo
Authorizations
Bearer authentication header of the form Bearer <token>, where <token> is your auth token.
Headers
application/json
"application/json"
application/json
"application/json"
Path Parameters
Instance UUID copied from hypersender dashboard
"{{ instance_id }}"
Body
Response
Request queued successfully
All API requests in v2 return a queued response. Use the queued_request_link to check the actual message response.
Indicates that the request has been queued
true
Status message
"Processing your request..."
UUID of the queued request
"a0816120-7e37-4e8b-8cf3-92deb2cdc133"
URL to check the status and response of the queued request
"https://app.hypersender.com/api/whatsapp/v2/{instance}/queued-requests/a0816120-7e37-4e8b-8cf3-92deb2cdc133"