Onyx WhatsApp API WhatsApp

Onyx WhatsApp API

Send messages, invoices, OTPs & notifications from your CRM, website, app or any software — straight to your customers' WhatsApp. We are the bridge between your system and your number.

   

WhatsApp Messaging API

 

Connect your software to WhatsApp

 

Send messages, invoices, OTPs and notifications from your CRM, website or app — straight to your customers' WhatsApp. One REST API. Your number. Your brand.

   

    Start free — no credit card     View API docs →  

   

What you get

 
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  • Send any message type — Text, images, PDFs, documents, audio, video. Bulk send up to 100 messages per API call.
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  • Connect in seconds — Start cloud service from the dashboard, scan QR with WhatsApp. No app store approval.
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  • Auto-Reply Bot — Reply automatically to incoming messages with keyword rules (text, image or document). Add-on available.
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  • Groups & two-way chat — Send to WhatsApp groups. Read incoming messages via API for chatbots or CRM sync.
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How it works

 

Create an account → Start cloud service in the dashboard → Scan the QR code with your WhatsApp → Use your Client ID and API key in simple HTTP requests. First message in under 5 minutes.

   

Use cases

 

CRM follow-ups and deal updates • E-commerce order and shipping alerts • OTPs and verification codes • PDF invoices and payment reminders • Team and group broadcasts • Keyword-based auto-replies and simple chatbots.

   
   

      99% delivery rate       <3s avg. delivery       24/7 cloud       5+ SDKs (PHP, Node, Python, etc.)    

 
   

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