For developers

Connect your own code — send and manage WhatsApp with the WA.cr API.

Point your existing WhatsApp Cloud API code at WA.crAlready have code that talks to Meta's WhatsApp Cloud API? Send through WA.cr by changing one thing — the web address — and using a WA.cr API key. We handle your real WhatsApp connection, billing and delivery.
Set your one-time-code defaultsChoose how WA.cr sends one-time codes for your workspace — which channels it tries and in what order, how long a code is, how long it lasts and how many wrong tries you allow. Owners can also let an API key read a generated code back.
Connect your AI assistant to WA.cr (MCP)Let Claude, ChatGPT, Cursor or your own agent read conversations, look up contacts and reply on every channel in your WA.cr inbox. Sign in from the assistant, or paste an API key — the same permissions and masking rules apply either way.