ChatKazi API docs

Connect your WhatsApp number, create an API key, and send customer messages from your own system.

These docs cover the API endpoints you need to connect sessions and send WhatsApp messages.

Build with ChatKazi

API keys

Authenticate requests with an API key from your ChatKazi account.

WhatsApp sessions

Start, inspect, connect, and log out WhatsApp numbers using named sessions.

Text and media messages

Send WhatsApp text, image, video, audio, and document messages from your own application.

QR and pairing code login

Use either QR code login or phone pairing codes to connect WhatsApp devices.

Usage limits and safe errors

Handle plan limits, disconnected sessions, and failed sends with predictable responses.

Backend-first integration

Keep API keys on your server and call ChatKazi from your backend.