curl --request POST \
  --url https://api.lehar.ai/ca/api/v0/campaigns/{campaign_id}/recipients \
  --header 'Content-Type: application/json' \
  --header 'X-API-KEY: <api-key>' \
  --data '
{
  "phone_number": "+919876543210",
  "variables": {
    "callee_name": "Jane",
    "company": "Acme"
  }
}
'

import requests

url = "https://api.lehar.ai/ca/api/v0/campaigns/{campaign_id}/recipients"

payload = {
    "phone_number": "+919876543210",
    "variables": {
        "callee_name": "Jane",
        "company": "Acme"
    }
}
headers = {
    "X-API-KEY": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {'X-API-KEY': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    phone_number: '+919876543210',
    variables: {callee_name: 'Jane', company: 'Acme'}
  })
};

fetch('https://api.lehar.ai/ca/api/v0/campaigns/{campaign_id}/recipients', 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://api.lehar.ai/ca/api/v0/campaigns/{campaign_id}/recipients",
  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([
    'phone_number' => '+919876543210',
    'variables' => [
        'callee_name' => 'Jane',
        'company' => 'Acme'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "X-API-KEY: <api-key>"
  ],
]);

$response = curl_exec($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://api.lehar.ai/ca/api/v0/campaigns/{campaign_id}/recipients"

	payload := strings.NewReader("{\n  \"phone_number\": \"+919876543210\",\n  \"variables\": {\n    \"callee_name\": \"Jane\",\n    \"company\": \"Acme\"\n  }\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("X-API-KEY", "<api-key>")
	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://api.lehar.ai/ca/api/v0/campaigns/{campaign_id}/recipients")
  .header("X-API-KEY", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"phone_number\": \"+919876543210\",\n  \"variables\": {\n    \"callee_name\": \"Jane\",\n    \"company\": \"Acme\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.lehar.ai/ca/api/v0/campaigns/{campaign_id}/recipients")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["X-API-KEY"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"phone_number\": \"+919876543210\",\n  \"variables\": {\n    \"callee_name\": \"Jane\",\n    \"company\": \"Acme\"\n  }\n}"

response = http.request(request)
puts response.read_body

{
  "data": [
    {
      "id": "recipient_01EXAMPLE",
      "campaign_id": "campaign_01EXAMPLE",
      "phone_number_masked": "+9***3210",
      "status": "pending",
      "variables": {
        "callee_name": "Jane",
        "company": "Acme"
      },
      "whatsapp_context": {},
      "outcome": {},
      "answers": {},
      "qualification_status": null,
      "sentiment": null,
      "next_action_at": null,
      "last_customer_message_at": null,
      "service_window_expires_at": null,
      "created_at": "2026-05-22T10:10:00Z",
      "updated_at": "2026-05-22T10:10:00Z"
    }
  ]
}

{
  "error": {
    "code": "invalid_request",
    "message": "recipients must be a non-empty list"
  }
}