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Vonage (Nexmo)

Communications

Voice calls, SMS, and video Communications APIs

Vonage provides SMS, voice, and video APIs for building communication-enabled applications. Formerly Nexmo.

Details

Auth Type
API Key + Secret
Rate Limit
30 req/s
Pricing
$0.0079 per SMS, $0.01/min calls
Full Docs
Step 1: Save your provider key

This is NOT your Callio key. Enter the API key from the provider's dashboard (e.g. OpenAI/SendGrid).

API Key + Secret

1. Go to https://dashboard.nexmo.com 2. Copy your API Key and API Secret 3. Use both as credentials

Get API Credentials

Getting Started

1

Try It Instantly

Click "Try It" above to test the API in the playground

2

Add to Your Agent

Click "Add to Agent" to get your API key and integrate

Common Use Cases

Voice calling
SMS notifications
Two-factor authentication
Number masking
Video conferencing

💻 Code Examples

Get started quickly with these code examples in your favorite language

curl -X GET \
  'https://www.callio.dev/api/proxy/vonage-sms/endpoint' \
  -H 'Authorization: Bearer YOUR_CALLIO_KEY' \
  -H 'Content-Type: application/json'

💡 Tip: Replace YOUR_CALLIO_KEY with your actual Callio API key from the dashboard.

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