Developer-ready communications stack

Integrate voice and messaging into your product with a cleaner API experience.

Nuxsol APIs are built for provisioning, outbound voice, messaging workflows, webhooks and account automation so engineering teams can ship faster with less friction.

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Developer overview Nuxsol API Stack

Messaging APIs

Send, track and manage compliant SMS traffic programmatically.

Voice APIs

Initiate calls, manage events and build workflow automation.

Webhooks

Receive delivery and call updates in real time.

Secure access

Bearer token auth and controlled account access.

Quick start

Build against clean endpoints and predictable flows

Use the API to send messages, start calls, monitor events and connect Nuxsol services to your own internal systems.

Base URL

https://api.nuxsol.com

All requests use HTTPS and bearer-token authentication.

Authentication

Authorization: Bearer YOUR_API_KEY

Generate API keys from your account dashboard and rotate them as needed.

Messaging

POST /api/v1/sms/send

Send transactional or campaign traffic with optional callback URLs.

Voice

POST /api/v1/calls/initiate

Launch call workflows and receive call-state events through your callbacks.

SMS API

Messaging endpoints

POST /api/v1/sms/send
  • to recipient number in E.164 format
  • from sender number or shortcode
  • message SMS body
  • callback_url optional delivery update URL
GET /api/v1/sms/status/{message_id}

Retrieve message delivery status and campaign processing feedback.

Voice API

Call automation endpoints

POST /api/v1/calls/initiate
  • to recipient number in E.164 format
  • from caller ID number
  • callback_url real-time call status webhook
GET /api/v1/calls/{call_id}

Inspect call details, outcomes and operational metadata after initiation.

Examples

Code samples

Send SMS

YOUR_API_KEY
Send SMS (PHP)
// Select a language to see code...

Initiate Call

YOUR_API_KEY
Initiate Call (PHP)
// Select a language to see code...
Developer support

Need help planning your integration?

Talk to the Nuxsol team about messaging workflows, voice APIs, coverage constraints and compliance requirements before you build.

Talk to Engineering Support Support Resources