Chatlane API: send WhatsApp messages from your system

1. Make sure the sender number is Pro (or you have fred.my Unlimited).
2. Open API documentation › Create API key, give it a name (e.g. My online store) and copy the key.
3. From your server, POST JSON to the endpoint shown on the page with header Authorization: Bearer <key>: sender_phone, recipient_phone, message_text (and task_type + media_url for media).
4. Use the optional Idempotency-Key header to avoid duplicates when retrying.
5. Check the delivery with the status endpoint or in Reports.

Keep keys on your server only and revoke a key immediately if it leaks. Errors return {"ok":false,"error":"CODE"} (401, 403, 422, 429).