مفتاح One API واحد.
كل القنوات.

curl -X POST https://api.slide.cx/v1/messages/send \
  -H "Authorization: Bearer sk_live_YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "to": "+919876543210",
    "channel": "whatsapp",
    "template": {
      "name": "order_confirmation",
      "languageCode": "en",
      "variables": { "1": "John", "2": "ORD-12345" }
    }
  }'

curl -X POST https://api.slide.cx/v1/messages/send \
  -H "Authorization: Bearer sk_live_YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "to": "+919876543210",
    "channel": "whatsapp",
    "fallbackChannels": ["sms"],
    "message": "Your order ORD-12345 has shipped!",
    "template": { "name": "order_shipped", "languageCode": "en" },
    "sms": { "senderId": "ACMEIN" }
  }'

{
  "status": "sent",
  "channelUsed": "sms",
  "messageId": "sms_9f2a1c8e7b3d",
  "attempts": [
    {
      "channel": "whatsapp",
      "status": "failed",
      "error": "Template not delivered to this recipient"
    },
    {
      "channel": "sms",
      "status": "sent",
      "messageId": "sms_9f2a1c8e7b3d"
    }
  ]
}