ChatLoop HQ

ChatLoop HQ is designed for software developers, startups, and businesses that need to connect WhatsApp communications to existing applications without building their own messaging infrastructure. Users connect a WhatsApp number by scanning a QR code through WhatsApp Linked Devices, obtain a channel-specific API key, and make authenticated API requests. The platform provides documentation and code examples for multiple programming languages, including JavaScript, Python, PHP, Java, and C#.

Features include sending text messages, images, videos, audio, voice notes, locations, and contacts; receiving incoming-message and delivery-related webhook events; retrieving chats, messages, and contacts; checking WhatsApp number availability; managing groups and participants; posting status updates; and accessing presence and profile operations. Use cases include order notifications, appointment reminders, customer enquiries, booking confirmations, and application-integrated messaging workflows. The service offers a free development tier with usage limits and a paid Developer Pro plan for production workloads. It uses linked WhatsApp sessions rather than Meta WhatsApp Cloud API credentials.