Get Phone Number Webhooks - Burki Voice AI Docs

This endpoint retrieves the current webhook configuration for a phone number, showing the URLs configured to receive voice call and SMS events.

How It Works

Provider Detection: Automatically detects which provider owns the number
Configuration Retrieval: Fetches current webhook URLs from the provider
Detailed Response: Returns complete webhook configuration with metadata

Real-Time Data: This endpoint queries the provider directly to get the most current webhook configuration, not cached data.

Path Parameters

phone_number (string, required): Phone number to get webhooks for in E.164 format (e.g., +14155551234)

Query Parameters

provider (string, optional): Provider ("twilio" or "telnyx"). Auto-detected if not provided

GET /phone-numbers/+14155551234/webhooks?provider=twilio

Response

A successful request returns a 200 OK status with current webhook configuration.

Response

{
  "success": true,
  "phone_number": "+14155551234",
  "provider": "twilio",
  "voice_webhook_url": "https://your-app.com/webhooks/voice",
  "sms_webhook_url": "https://your-app.com/webhooks/sms",
  "configuration": {
    "voice_webhook_url": "https://your-app.com/webhooks/voice",
    "voice_method": "POST",
    "sms_webhook_url": "https://your-app.com/webhooks/sms",
    "sms_method": "POST",
    "status_callback_url": "https://your-app.com/status",
    "status_callback_method": "POST",
    "phone_number_sid": "PN1234567890abcdef",
    "friendly_name": "Support Line"
  }
}

Response Fields

success (boolean): Whether the request completed successfully
phone_number (string): The queried phone number
provider (string): Provider that owns the number (“twilio” or “telnyx”)
voice_webhook_url (string): Current voice webhook URL
sms_webhook_url (string): Current SMS webhook URL
configuration (object): Complete webhook configuration details
- For Twilio:
  - voice_method (string): HTTP method for voice webhooks
  - sms_method (string): HTTP method for SMS webhooks
  - status_callback_url (string): URL for status callbacks
  - phone_number_sid (string): Twilio phone number SID
  - friendly_name (string): Display name for the number
- For Telnyx:
  - connection_id (string): Associated connection ID
  - phone_number_id (string): Telnyx phone number ID
  - status (string): Number status
  - features (array): Supported features

Error Responses

400 Bad Request

Returned when the request contains invalid parameters.

{
  "detail": "Phone number must be in E.164 format (e.g., +1234567890)"
}

404 Not Found

Returned when the phone number is not found.

{
  "detail": "Phone number +14155551234 not found in database"
}

500 Internal Server Error

Returned when the provider API fails.

{
  "detail": "Could not retrieve webhook configuration for +14155551234"
}

Provider-Specific Responses

Twilio Response Example

{
  "success": true,
  "phone_number": "+14155551234",
  "provider": "twilio",
  "voice_webhook_url": "https://api.yourapp.com/twiml",
  "sms_webhook_url": "https://api.yourapp.com/twiml",
  "configuration": {
    "voice_webhook_url": "https://api.yourapp.com/twiml",
    "voice_method": "POST",
    "sms_webhook_url": "https://api.yourapp.com/twiml",
    "sms_method": "POST", 
    "status_callback_url": "https://api.yourapp.com/status",
    "status_callback_method": "POST",
    "phone_number_sid": "PN1234567890abcdef1234567890abcdef",
    "friendly_name": "Customer Support Line"
  }
}

Telnyx Response Example

{
  "success": true,
  "phone_number": "+14155551234",
  "provider": "telnyx",
  "voice_webhook_url": "Configured at Connection level",
  "sms_webhook_url": "Configured at Connection level",
  "configuration": {
    "connection_id": "1234567890",
    "phone_number_id": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
    "status": "active",
    "features": ["voice", "sms", "mms"]
  }
}

Telnyx Limitation: Telnyx webhook URLs are configured at the Connection/Application level, so the exact webhook URLs may not be directly retrievable via the phone number API. The response indicates they are “Configured at Connection level”.

Use Cases

Configuration Audit

Verify webhook configurations across all numbers:

# Check multiple numbers
for number in "+14155551234" "+12125555678" "+13105559999"; do
  curl -H "Authorization: Bearer YOUR_API_KEY" \
    "https://api.burki.dev/phone-numbers/${number}/webhooks"
done

Environment Verification

Confirm webhooks point to the correct environment:

async function verifyEnvironmentWebhooks(phoneNumbers, expectedEnv) {
  for (const phoneNumber of phoneNumbers) {
    const config = await getPhoneWebhooks(phoneNumber);
    
    if (!config.voice_webhook_url.includes(expectedEnv)) {
      console.warn(`❌ ${phoneNumber} points to wrong environment`);
    } else {
      console.log(`✅ ${phoneNumber} correctly configured`);
    }
  }
}

Debugging Call Issues

Check webhook configuration when troubleshooting:

def debug_call_issues(phone_number):
    config = get_phone_webhooks(phone_number)
    
    print(f"Phone: {config['phone_number']}")
    print(f"Provider: {config['provider']}")
    print(f"Voice Webhook: {config['voice_webhook_url']}")
    
    # Test webhook accessibility
    if config['voice_webhook_url']:
        try:
            response = requests.get(config['voice_webhook_url'])
            print(f"Webhook Status: {response.status_code}")
        except Exception as e:
            print(f"Webhook Error: {e}")

Integration Examples

Node.js

const axios = require('axios');

async function getPhoneWebhooks(phoneNumber, provider = null) {
  try {
    const params = provider ? `?provider=${provider}` : '';
    const response = await axios.get(`https://api.burki.dev/phone-numbers/${phoneNumber}/webhooks${params}`, {
      headers: {
        'Authorization': 'Bearer YOUR_API_KEY'
      }
    });
    
    return response.data;
  } catch (error) {
    console.error('Failed to get webhooks:', error.response.data);
    throw error;
  }
}

// Usage
const config = await getPhoneWebhooks('+14155551234');
console.log('Voice webhook:', config.voice_webhook_url);
console.log('SMS webhook:', config.sms_webhook_url);

Python

import requests

def get_phone_webhooks(phone_number, provider=None):
    url = f"https://api.burki.dev/phone-numbers/{phone_number}/webhooks"
    headers = {"Authorization": "Bearer YOUR_API_KEY"}
    
    params = {}
    if provider:
        params["provider"] = provider
    
    response = requests.get(url, headers=headers, params=params)
    
    if response.status_code == 200:
        return response.json()
    else:
        raise Exception(f"Failed to get webhooks: {response.json()['detail']}")

# Usage
config = get_phone_webhooks("+14155551234")
print(f"Voice: {config['voice_webhook_url']}")
print(f"SMS: {config['sms_webhook_url']}")

PHP

<?php
function getPhoneWebhooks($phoneNumber, $provider = null) {
    $url = "https://api.burki.dev/phone-numbers/" . urlencode($phoneNumber) . "/webhooks";
    
    if ($provider) {
        $url .= "?provider=" . urlencode($provider);
    }
    
    $headers = ['Authorization: Bearer YOUR_API_KEY'];
    
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    
    $response = curl_exec($ch);
    $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
    curl_close($ch);
    
    if ($httpCode === 200) {
        return json_decode($response, true);
    } else {
        throw new Exception("Failed to get webhooks: " . $response);
    }
}

// Usage
$config = getPhoneWebhooks('+14155551234');
echo "Voice: " . $config['voice_webhook_url'] . "\n";
echo "SMS: " . $config['sms_webhook_url'] . "\n";
?>

Batch Operations

Check Multiple Numbers

async function auditPhoneWebhooks(phoneNumbers) {
  const results = [];
  
  for (const phoneNumber of phoneNumbers) {
    try {
      const config = await getPhoneWebhooks(phoneNumber);
      results.push({
        phoneNumber,
        provider: config.provider,
        voiceWebhook: config.voice_webhook_url,
        smsWebhook: config.sms_webhook_url,
        status: 'success'
      });
    } catch (error) {
      results.push({
        phoneNumber,
        status: 'error',
        error: error.message
      });
    }
  }
  
  return results;
}

// Usage
const phoneNumbers = ['+14155551234', '+12125555678', '+13105559999'];
const audit = await auditPhoneWebhooks(phoneNumbers);
console.table(audit);

Environment Comparison

def compare_webhook_environments(phone_numbers):
    """Compare webhook environments across numbers"""
    
    environments = {}
    
    for phone_number in phone_numbers:
        try:
            config = get_phone_webhooks(phone_number)
            voice_url = config.get('voice_webhook_url', '')
            
            # Extract environment from URL
            if 'staging' in voice_url:
                env = 'staging'
            elif 'production' in voice_url or 'api' in voice_url:
                env = 'production'
            else:
                env = 'unknown'
            
            if env not in environments:
                environments[env] = []
            environments[env].append(phone_number)
            
        except Exception as e:
            print(f"Error checking {phone_number}: {e}")
    
    return environments

Monitoring and Alerting

Webhook Health Check

import requests
from urllib.parse import urlparse

def health_check_webhooks(phone_numbers):
    """Check if webhook URLs are accessible"""
    
    issues = []
    
    for phone_number in phone_numbers:
        config = get_phone_webhooks(phone_number)
        
        for webhook_type in ['voice_webhook_url', 'sms_webhook_url']:
            url = config.get(webhook_type)
            
            if url and not url.startswith('Configured'):
                try:
                    response = requests.get(url, timeout=5)
                    if response.status_code >= 400:
                        issues.append({
                            'phone_number': phone_number,
                            'webhook_type': webhook_type,
                            'url': url,
                            'status_code': response.status_code
                        })
                except Exception as e:
                    issues.append({
                        'phone_number': phone_number,
                        'webhook_type': webhook_type,
                        'url': url,
                        'error': str(e)
                    })
    
    return issues

Configuration Drift Detection

async function detectConfigDrift(phoneNumbers, expectedWebhooks) {
  const drifts = [];
  
  for (const phoneNumber of phoneNumbers) {
    const current = await getPhoneWebhooks(phoneNumber);
    const expected = expectedWebhooks[phoneNumber];
    
    if (!expected) continue;
    
    if (current.voice_webhook_url !== expected.voice) {
      drifts.push({
        phoneNumber,
        type: 'voice',
        current: current.voice_webhook_url,
        expected: expected.voice
      });
    }
    
    if (current.sms_webhook_url !== expected.sms) {
      drifts.push({
        phoneNumber,
        type: 'sms',
        current: current.sms_webhook_url,
        expected: expected.sms
      });
    }
  }
  
  return drifts;
}

Best Practices

Regular Auditing

Daily Checks: Verify webhook configurations daily
Environment Validation: Ensure correct environment URLs
Accessibility Testing: Test webhook URL accessibility
Provider Sync: Compare with provider console settings

Error Handling

def safe_get_webhooks(phone_number, retries=3):
    """Get webhooks with retry logic"""
    
    for attempt in range(retries):
        try:
            return get_phone_webhooks(phone_number)
        except Exception as e:
            if attempt == retries - 1:
                raise
            time.sleep(2 ** attempt)  # Exponential backoff

Caching Strategy

class WebhookConfigCache {
  constructor(ttl = 300000) { // 5 minutes TTL
    this.cache = new Map();
    this.ttl = ttl;
  }
  
  async get(phoneNumber) {
    const cached = this.cache.get(phoneNumber);
    
    if (cached && Date.now() - cached.timestamp < this.ttl) {
      return cached.data;
    }
    
    const fresh = await getPhoneWebhooks(phoneNumber);
    this.cache.set(phoneNumber, {
      data: fresh,
      timestamp: Date.now()
    });
    
    return fresh;
  }
}

This endpoint is essential for maintaining visibility into your webhook configurations and ensuring your phone numbers are properly connected to your application’s event handling endpoints.

API Documentation

Assistants

Assistant Phone Numbers

Assistant Documents (RAG)

Calls

Messaging

Phone Number Management

Call Data

Organization

Webhooks & System

WebSockets

​How It Works

​Path Parameters

​Query Parameters

​Response

​Response Fields

​Error Responses

​400 Bad Request

​404 Not Found

​500 Internal Server Error

​Provider-Specific Responses

​Twilio Response Example

​Telnyx Response Example

​Use Cases

​Configuration Audit

​Environment Verification

​Debugging Call Issues

​Integration Examples

​Node.js

​Python

​PHP

​Batch Operations

​Check Multiple Numbers

​Environment Comparison

​Monitoring and Alerting

​Webhook Health Check

​Configuration Drift Detection

​Best Practices

​Regular Auditing

​Error Handling

​Caching Strategy

How It Works

Path Parameters

Query Parameters

Response

Response Fields

Error Responses

400 Bad Request

404 Not Found

500 Internal Server Error

Provider-Specific Responses

Twilio Response Example

Telnyx Response Example

Use Cases

Configuration Audit

Environment Verification

Debugging Call Issues

Integration Examples

Node.js

Python

PHP

Batch Operations

Check Multiple Numbers

Environment Comparison

Monitoring and Alerting

Webhook Health Check

Configuration Drift Detection

Best Practices

Regular Auditing

Error Handling

Caching Strategy