WhatsApp connection as a service · API 2026-08
Pair any number by QR code, send every message type, receive everything as webhooks, manage groups and keep hosted history — on infrastructure that reconnects itself.
session acmemaincurl -X POST "https://api.meowsapp.com/send-message" \
-H "Authorization: Bearer $SN_TOKEN" \
-H "Content-Type: application/json" \
-d '{
"clientId": "acmemain",
"to": "+60123456789",
"body": "Hi Jane — your viewing is confirmed for Saturday, 3 pm.",
"metaData": { "fromAI": false, "userId": "agent_7" }
}'
# → { "status": "sent", "messageId": "3EB0A1B2C3D4E5F6" }{
"event": "message.received",
"type": "text",
"clientId": "acmemain",
"chatRoomId": "acmemain-60111111111111-123456789012345",
"clientLid": "123456789012345",
"remoteName": "Jane Lim",
"remotePhone": "60123456789",
"fromMe": false,
"messageId": "3EB0C4D5E6F7",
"body": "See you Saturday!",
"quoted": { "messageId": "3EB0A1B2C3D4E5F6", "type": "text" },
"timestamp": "2026-08-28T05:22:55Z"
}What you get
Built for CRMs, AI agents, support desks and notification pipelines that need a real WhatsApp number behind them.
QR code or 8-digit phone code. No Meta business verification, no template approvals, no per-message fees — the number you already own, driven by API.
Text, replies, mentions, images, video, documents, voice notes, stickers, polls, buttons, reactions, edits, locations and contact cards — send and receive.
Every inbound message, vote, button tap, reaction, edit and delete is POSTed to your URL as one normalised JSON event, with retries and a bearer token.
List, create and manage groups, add or promote members, mint invite links — and opt in to receiving group traffic per session.
Turn on history and we store every chat, copy media to permanent public links, resolve profile pictures and expose it all over read endpoints.
Sessions auto-resume after every deploy or crash, a heartbeat reconnects dropped sessions every two minutes, and terminal states raise alerts instead of silent failures.
How it works
One bearer token for your whole account. Hand out per-session secrets to your own customers later.
POST /start with a clientId you choose and the webhook URL that should receive messages.
Poll GET /qr, show the image, and watch the status flip to connected.
POST /send-message to talk; your webhook receives every reply as JSON.
API reference
Parameters, request and response samples, and the exact error codes — no guesswork.
Get a token, pair a number, and send your first message before your coffee cools.