curl --request POST \
  --url https://api.buildwithchirp.com/v1/calls \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "from": "+15551234567",
  "to": "+15559876543",
  "fromChannel": "pstn",
  "toChannel": "pstn",
  "metadata": {
    "campaignId": "camp_123"
  }
}
'

import requests

url = "https://api.buildwithchirp.com/v1/calls"

payload = {
    "from": "+15551234567",
    "to": "+15559876543",
    "fromChannel": "pstn",
    "toChannel": "pstn",
    "metadata": { "campaignId": "camp_123" }
}
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({
    from: '+15551234567',
    to: '+15559876543',
    fromChannel: 'pstn',
    toChannel: 'pstn',
    metadata: {campaignId: 'camp_123'}
  })
};

fetch('https://api.buildwithchirp.com/v1/calls', 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.buildwithchirp.com/v1/calls",
  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([
    'from' => '+15551234567',
    'to' => '+15559876543',
    'fromChannel' => 'pstn',
    'toChannel' => 'pstn',
    'metadata' => [
        'campaignId' => 'camp_123'
    ]
  ]),
  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://api.buildwithchirp.com/v1/calls"

	payload := strings.NewReader("{\n  \"from\": \"+15551234567\",\n  \"to\": \"+15559876543\",\n  \"fromChannel\": \"pstn\",\n  \"toChannel\": \"pstn\",\n  \"metadata\": {\n    \"campaignId\": \"camp_123\"\n  }\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://api.buildwithchirp.com/v1/calls")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"from\": \"+15551234567\",\n  \"to\": \"+15559876543\",\n  \"fromChannel\": \"pstn\",\n  \"toChannel\": \"pstn\",\n  \"metadata\": {\n    \"campaignId\": \"camp_123\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.buildwithchirp.com/v1/calls")

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  \"from\": \"+15551234567\",\n  \"to\": \"+15559876543\",\n  \"fromChannel\": \"pstn\",\n  \"toChannel\": \"pstn\",\n  \"metadata\": {\n    \"campaignId\": \"camp_123\"\n  }\n}"

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

{
  "id": "call_2DbBs7GWhGvVNJGrDXr5RG0mBWI",
  "appId": "app_2DbBs7GWhGvVNJGrDXr5RG0mBWI",
  "direction": "outbound",
  "status": "in_progress",
  "fromAddress": "+15551234567",
  "toAddress": "+15559876543",
  "fromChannel": "pstn",
  "toChannel": "pstn",
  "duration": 120,
  "endReason": "hangup",
  "metadata": {},
  "livekitRoomName": "<string>",
  "startedAt": "2026-01-15T10:30:00Z",
  "answeredAt": "2026-01-15T10:30:05Z",
  "endedAt": "2026-01-15T10:32:05Z",
  "createdAt": "2026-01-15T10:30:00Z"
}

{
  "error": {
    "type": "invalid_request_error",
    "message": "The phone number \"+1abc\" is not in E.164 format.",
    "code": "invalid_phone_number",
    "doc_url": "https://docs.buildwithchirp.com/api_reference/error-codes#invalid_phone_number",
    "param": "from",
    "provider": {
      "source": "meta",
      "code": 123,
      "message": "<string>",
      "fbtrace_id": "<string>",
      "health_status": {
        "entities": [
          {
            "id": "<string>",
            "can_send_message": "AVAILABLE",
            "errors": [
              {
                "error_code": 123,
                "error_description": "<string>",
                "possible_solution": "<string>"
              }
            ]
          }
        ]
      }
    },
    "additional_info": [
      "<string>"
    ]
  }
}

{
  "error": {
    "type": "invalid_request_error",
    "message": "The phone number \"+1abc\" is not in E.164 format.",
    "code": "invalid_phone_number",
    "doc_url": "https://docs.buildwithchirp.com/api_reference/error-codes#invalid_phone_number",
    "param": "from",
    "provider": {
      "source": "meta",
      "code": 123,
      "message": "<string>",
      "fbtrace_id": "<string>",
      "health_status": {
        "entities": [
          {
            "id": "<string>",
            "can_send_message": "AVAILABLE",
            "errors": [
              {
                "error_code": 123,
                "error_description": "<string>",
                "possible_solution": "<string>"
              }
            ]
          }
        ]
      }
    },
    "additional_info": [
      "<string>"
    ]
  }
}

{
  "error": {
    "type": "invalid_request_error",
    "message": "The phone number \"+1abc\" is not in E.164 format.",
    "code": "invalid_phone_number",
    "doc_url": "https://docs.buildwithchirp.com/api_reference/error-codes#invalid_phone_number",
    "param": "from",
    "provider": {
      "source": "meta",
      "code": 123,
      "message": "<string>",
      "fbtrace_id": "<string>",
      "health_status": {
        "entities": [
          {
            "id": "<string>",
            "can_send_message": "AVAILABLE",
            "errors": [
              {
                "error_code": 123,
                "error_description": "<string>",
                "possible_solution": "<string>"
              }
            ]
          }
        ]
      }
    },
    "additional_info": [
      "<string>"
    ]
  }
}

{
  "error": {
    "type": "invalid_request_error",
    "message": "The phone number \"+1abc\" is not in E.164 format.",
    "code": "invalid_phone_number",
    "doc_url": "https://docs.buildwithchirp.com/api_reference/error-codes#invalid_phone_number",
    "param": "from",
    "provider": {
      "source": "meta",
      "code": 123,
      "message": "<string>",
      "fbtrace_id": "<string>",
      "health_status": {
        "entities": [
          {
            "id": "<string>",
            "can_send_message": "AVAILABLE",
            "errors": [
              {
                "error_code": 123,
                "error_description": "<string>",
                "possible_solution": "<string>"
              }
            ]
          }
        ]
      }
    },
    "additional_info": [
      "<string>"
    ]
  }
}