A complete REST API for WhatsApp messaging. JSON responses, Bearer token authentication, real-time webhooks, and full OpenAPI documentation.
Quick Start
Sign in to your CloudSingh dashboard, go to Settings → API Keys, and generate a new key. Each key can be scoped to specific permissions and rate limits.
Use a simple curl command to send a WhatsApp message through the API:
curl -X POST https://api.cloudsingh.in/v1/messages \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"sessionId": "your-session-id",
"to": "919876543210",
"text": "Hello from CloudSingh API!"
}'Register a webhook URL to receive real-time events when messages are sent, delivered, fail, or when new inbound messages arrive. Configure webhooks in the dashboard or via the API.
API Overview
All endpoints return JSON. Authenticate with Bearer YOUR_API_KEY in the Authorization header.
/v1/messages
Send a text, image, document, or media message to any WhatsApp number through a connected session.
/v1/instances
List all WhatsApp sessions (instances) in your workspace, including connection status and QR codes.
/v1/webhooks
Register a webhook URL to receive real-time delivery receipts, inbound messages, and session events.
/v1/api-keys
Create and manage scoped API keys with custom permissions, rate limits, and expiration dates.
/v1/contacts
List, search, create, and manage your contact database. Supports tags, custom fields, and bulk import.
/v1/campaigns
Create and manage bulk messaging campaigns with scheduling, templates, and delivery tracking.
Webhooks
Get notified instantly when something happens in your workspace.
message.sentmessage.failedmessage.inboundsession.connectedsession.disconnectedExplore the full API reference with request/response examples for every endpoint.