Log inCreate account

Your WhatsApp number, as an API

Link a WhatsApp number by scanning a QR code. Then connect it the way you work: call the API from your code, add our cloud MCP server to ChatGPT or Claude, or run our MCP server on your own computer.

Create accountSee the API
Works with WhatsApp and WhatsApp BusinessSeveral numbers on one account
send a message
curl -X POST "$APISAPP/v1/messages" \
  -H "Authorization: Bearer wat_••••••••" \
  -d '{"recipient": "14155550132",
       "message": "Your order has shipped 📦"}'

# → 200
{ "ok": true, "wa_message_id": "3EB0CB97F37F91F563B0" }
Your order has shipped 📦14:32
Webhook received
message.read · 3EB0CB97F37F…

Three ways to connect

Same account, same numbers. Pick the one that fits how you work, or use more than one.

For developers

API

Call our HTTP API from your code or from n8n, Make and similar tools. Send, read, and get every reply on your webhook.

POST /v1/messagesAPI docs →
For ChatGPT and Claude

Cloud MCP

Paste one link into ChatGPT, Claude or Claude Code and sign in. Nothing to install. Works with every number on your account.

app.api-supp.com/api/mcpSetup guide →
On your computer

Local MCP

Our open-source server runs on your own computer, for one number. It adds files, voice notes and media download. Works with Claude Desktop, Cursor and Muse.

github.com/yehudashtein/wa-bridge-mcpSetup guide →

Everything your number can do in WhatsApp

One HTTP API for sending, receiving and keeping track of conversations.

Text messages

Send to any phone number or group, with the delivery status of each message.

type: "text"

Images, video and files

Upload once, then send the same file to as many chats as you need.

POST /v1/media

Polls, lists and buttons

Ask a question with 2 to 12 options, or offer a menu people tap instead of type.

type: "poll"

Webhooks

Incoming messages, deliveries, reads and connection changes, each signed so you know it came from us.

message.received

Chats and history

Look up chats, contacts and past messages, and catch up on events you missed.

GET /v1/chats

Contacts

Look up the people this number knows, by name or phone, and the chats they are in.

GET /v1/contacts

Live in a few minutes

No phone to host and no app to install. Your number stays on your phone.

First

Create an account

Sign up with your email and confirm it.

Then

Add a number

Give it a name, like “Sales line”.

Then

Scan the QR code

In WhatsApp: Settings → Linked devices → Link a device.

Done

Connect it

Use the API token in your code, or connect your AI agent with the cloud or local MCP.

Built for developers

Plain JSON over HTTPS with one bearer token per number.

  • Each number has its own API token, and you can replace it at any time.
  • Webhook calls carry a signature header you check with your secret.
  • Numbers are fully separated: one number's token never reaches another's data.
POST /v1/messages
{
  "recipient": "14155550132",
  "type": "poll",
  "question": "Which day suits you?",
  "options": ["Monday", "Tuesday", "Wednesday"]
}

One simple price

Pay for each WhatsApp number you link. No setup fee.

Per number

$7.50 per WhatsApp number / month

  • Text, media, polls, lists and buttons
  • Webhooks for replies, deliveries and reads
  • Chats, contacts and message history
  • Its own API token, replaceable at any time
Create account

Billed monthly in advance. VAT added where the law requires it. Cancel any time. Cancellation and refunds

Get started

Create an account, add a number, scan the code.

Adding a number takes an activation code. Our sales team will set you up.

Contact salessales@api-supp.com