WhatsApp API For Automations.
Keep Your Flow Stable.
Send and receive WhatsApp messages from Make, n8n, Zapier and your AI agents. Green API compatible, so switching takes minutes. Built for agencies and automation experts.
Only $10/mo per number after trial.
Watch an AI agent get its own WhatsApp number
See it in action
From sign-up to an AI agent sending WhatsApp messages, in about 30 seconds.
Your AI employee never sleeps.
Now it's on WhatsApp.
Your customers already live on WhatsApp. Connect Claude, ChatGPT or Grok to your number, and it answers them like a member of your team: day and night, in their language, with your prices and your tone.
Turn on AI auto-reply
Pick Grok, ChatGPT or Claude, paste your key and write what it should know about your business. Every new message wakes it up.
One MCP link
Paste one link into Claude, ChatGPT, Grok, Cursor or n8n. Your agent gets WhatsApp as a tool: it reads, replies, sends files and checks numbers on its own.
You stay in control. The moment you reply yourself, your AI steps back in that chat.
Why automation experts are moving to Flow API today
Built to stay connected
Sessions restart automatically when they drop, and webhooks retry before falling back to a queue you can poll, so a hiccup doesn't cost you leads.
3-minute migration blueprint
Don't rebuild your entire Make scenario. Use our ready-made blueprints to replace your old modules with Flow API in just a few clicks.
Safer sending
Show "typing…" before you reply and pace messages from your automation so they read like a person. Messaging only people who expect you is what keeps a number safe.
Built for agencies. Control every client. Profit from every account.
The command center for automation experts. Manage all your clients in one place, and get paid for every one of them.
The Agency Master Dashboard
Stop juggling multiple logins. View, manage and control every client's WhatsApp connection from one screen. Restart sessions and check connection status for each client independently.
The 20% recurring partner program
Every client you connect through your dashboard earns you a 20% recurring commission, whether they pay monthly or annually. One-click payouts, total transparency.
One simple price. Zero hidden fees.
Choose the plan that fits your agency's cash flow. Prefer no subscription? Pay once for 1, 3, 6 or 12 months at $10 per number per month.
- Pay as you go
- Cancel anytime
- Lock in the lowest rate
- Save $20 per year per client
- Our best deal for automation agencies
- Brings your cost down to $6.67/mo per client
- Unlimited text & media messages
- Make, Zapier & n8n integrations
- Full access to the Agency Dashboard
- Auto-enrolled in the 20% affiliate program
- Premium support for migration
Get the most out of Flow API
On your phone? Use a code
Link with an 8-character code instead of the QR. Faster, and it works on the same phone.
Keep a free linked-device slot
WhatsApp allows four linked devices. If all are taken, linking fails.
Dropped? We have you covered
Numbers restart automatically, and you get an email if a rescan is needed. Your token never changes.
Learn it in minutes
Step-by-step guides, each with a short video. Start with the basics or jump straight to your tool.
Getting started
Your first WhatsApp message in 5 minutes
Build an AI bot
Grok, ChatGPT or Claude answering on WhatsApp
Connect your AI agent
Give Claude or ChatGPT your WhatsApp with MCP
Move from Green API
Same API, change one URL
Make
Send WhatsApp messages from a scenario
n8n
A native node with a WhatsApp trigger
Zapier
Connect WhatsApp to 7,000+ apps
Get the most out of it
Tips for a reliable number, smart AI and growth
Developers: every API method has its own page with an example and a video.
Questions, answered
What is Flow API?
Flow API is a WhatsApp HTTP API for automations and AI agents. You link a WhatsApp number by scanning a QR code, get an instance ID and token, and send and receive messages with simple HTTP requests, webhooks, or an MCP server for AI agents.
Is Flow API compatible with Green API?
Yes. Flow API uses the same request format as Green API: the same method names (sendMessage, sendFileByUrl, receiveNotification and the rest), the same request bodies and the same webhook notification format. Existing Green API code and SDKs work after changing the base URL to https://flowapi.pro.
How do I migrate from Green API to Flow API?
Create a Flow API instance, scan the QR code with your WhatsApp, then in your existing integration replace the host api.green-api.com with flowapi.pro and use your new instance ID and token. In Make, n8n or Zapier that is a change to one URL per module.
Does Flow API work with Make, n8n and Zapier?
Yes. Flow API provides ready Make scenarios, an n8n community node with a WhatsApp trigger, and a Zapier app with an instant new-message trigger and send actions. Any tool that can make HTTP requests also works directly.
Can I connect WhatsApp to Claude, ChatGPT or other AI agents?
Yes. Every Flow API number has its own MCP server link. Add it to Claude, ChatGPT, Codex, Cursor or an n8n AI Agent and the agent gets tools to read new messages, reply, send files, check numbers and create groups.
How much does Flow API cost?
Flow API costs $10 per WhatsApp number per month, or $100 per number per year. The Agency 5-Pack is $400 per year for five numbers, about $6.67 per number per month. Every plan includes unlimited text and media messages.
Can I pay once instead of subscribing?
Yes. You can prepay 1, 3, 6 or 12 months at $10 per number per month as a one-time payment that never renews. Subscriptions are also available and can be cancelled any time.
Is there a free trial?
Yes. Every new account gets a 7-day free trial for one WhatsApp number, with no credit card required.
Is Flow API the official WhatsApp Business API?
No. Flow API connects to a regular WhatsApp or WhatsApp Business app account by linking it as a device, like WhatsApp Web. It is not affiliated with WhatsApp or Meta, and it does not need Meta approval or message templates.
Can my WhatsApp number get banned?
WhatsApp can restrict any number that sends spam or messages people who did not ask to hear from you. No API can prevent that. Pace your messages, use typing indicators, and only message people who expect to hear from you.