Kapso number
Recommended- US number, ready on signup
- No SIM, no verification codes
- Live in 2 minutes
Trusted by 30,000+ developers WhatsApp
for developers
The fastest way to add official WhatsApp to your product. Ship to 3 billion WhatsApp users today.
Trusted by 30,000+ developers
Connect to WhatsApp
in 2 minutes
Three ways to connect. Pick the one that fits your case.
Use your own SIM
- Any number, any country
- One-time verification
- Full API access
WhatsApp Business Kapso
WhatsApp Business app
- Keep using the app
- Messages sync to Kapso
- No migration
Integrations officially supported by Meta.
Integrate this afternoon
Two simple steps to get started.
send.ts
import { WhatsAppClient } from '@kapso/whatsapp-cloud-api';const client = new WhatsAppClient({ baseUrl: 'https://api.kapso.ai/meta/whatsapp', kapsoApiKey: process.env.KAPSO_API_KEY!});await client.messages.sendText({ phoneNumberId: '647015955153740', to: '1234567890', body: 'Hey! How can I help you today?'});webhook.ts
app.post('/webhook', express.json(), (req, res) => { const events = normalizeWebhook(req.body); const message = events.messages[0]; console.log(`${message.kapso.contact_name}: ${message.kapso.content}`); res.sendStatus(200);});Or let AI build it for you
Use Kapso Agent, Claude Code, Cursor, Codex, or any coding agent you want.
MCP
Give agents live WhatsApp tools: read conversations, send messages, manage templates and webhooks.
CLI
Install @kapso/cli to script numbers, messages, and deploys from your terminal or CI.
Skills
Teach Claude Code, Cursor, and Codex to integrate WhatsApp with one command.
Kapso Agent
Describe what you need and Kapso Agent builds workflows, templates, and fixes inside Kapso.
First-class
developer experience
Built by engineers, for engineers. Test safely, integrate easily, and ship faster.
Sandbox mode
Test with a shared sandbox number. Add your phone, connect an agent, and activate your test session.
WhatsApp webhooks
Receive real-time notifications directly to your server. Track delivery status, retries, and response times.
API logs
Debug with confidence. Every API request logged with its status, timing, and the error when it fails.
Message tracking
Track every message status in real-time. Know exactly when messages are sent, delivered, and read.
Build mini-apps
inside WhatsApp
Kapso makes WhatsApp Flows easy. Describe what you want and our Agent builds, deploys, and debugs it for you. Forms, bookings, catalogs, connected to any API.
Tools for your team
Everything your team needs to manage WhatsApp at scale.
Inbox
Explore →All your WhatsApp conversations in one place, with live chats and automation stats.
Workflows
Explore →Build AI-powered automations visually. Connect 2,700+ apps and call any API.
Broadcasts
Explore →Message thousands of contacts at once. Schedule campaigns and track engagement.
Functions
Explore →Deploy serverless JavaScript for webhooks, workflow steps, and agent tools in one click.
Slack
Explore →Mention @Kapso in Slack to inspect conversations, debug webhooks, and review templates.
Automate WhatsApp
for your customers
Let your customers connect their own WhatsApp in minutes. Skip months of Meta API integration.
1
Send a setup link
Generate a unique onboarding link for each of your customers.
2
They connect WhatsApp
Your customer links their WhatsApp Business number to your app through Kapso.
3
Automate via API
Send messages and run automations on their number with the Kapso API.
Integrate WhatsApp.
Today.
2,000 free messages/month. $2 in credits included. No credit card required.