#1 WhatsApp API
For developers
& integrations
Automate reminders, run chatbots & send bulk messages with FastApi.in — India's most reliable unofficial WhatsApp API. No per-message charges. Ever.
Message Delivered
2 seconds ago
Auto Reply Active
Chatbot running
48 Reminders
Scheduled today
Everything you need to
automate WhatsApp
Stop chasing customers manually. Let FastAPI handle reminders, replies, and campaigns — automatically.
Scheduled Sending
Send reminders and messages to unlimited contacts at the exact time you want. No per-message charges, ever.
Smart Chatbot
Build a custom auto-reply bot that responds instantly to your customers — saving time and improving satisfaction.
Auto Confirmation
FastApi confirms appointments automatically before your day begins. No manual follow-ups needed.
Full Personalization
Customize every message template, bot reply, and campaign to match your brand's voice and style.
No Block Risk
Our secure API architecture ensures your messages are delivered safely — without getting your number blocked.
Data Capture
Collect customer info through WhatsApp questions automatically and export the data anytime you need.
More than reminders —
FastApi is a Marketing Tool
Send bulk campaigns in multiple formats. Text, links, files, buttons, lists and more — all via WhatsApp.
Nice to meet you —
We're FastApi's Team
We created FastApi to solve the daily hassle of manual reminders. We know how much time is wasted chasing customers — so we built a smarter solution. We are with you at every step, reachable via WhatsApp or Instagram anytime.
- 24/7 Support
- Smart Solutions
- Regular Updates
- Import & Export
Powerful Bot &
Auto Responder
FastApi's technology lets you build custom autoresponders of any kind. Capture client data, organize appointments, track sales — all through automatic WhatsApp conversations. Fast, easy, and powerful.
- Custom Flows
- Data Collection
- Instant Replies
- No Coding Needed
Simple, transparent pricing
Choose a plan that's right for you. Custom integration support charges extra.
- 1 Device
- Unlimited Messages
- Autoreply Chatbot
- 24x7 Online
- Schedule Messages
- Get & Post API
- 1 Device
- Unlimited Messages
- Autoreply Chatbot
- 24x7 Online
- Schedule Messages
- Get & Post API
- 3 Devices
- Unlimited Messages
- Autoreply Chatbot
- 24x7 Online
- Schedule Messages
- Get & Post API
Start sending smarter
WhatsApp messages today
Try FastApi completely free for 15 days. Automate replies, schedule messages, and connect your apps via API — all from one simple dashboard.