Talk to the people who build WhatSync

Setup, billing, privacy or a feature you need. You reach the builders directly.

Email

Best for setup, billing, privacy and anything that needs a written answer.

hello@whatsync.app

WhatsApp

Best for a quick question. Say what you expected to happen and what you saw instead.

Message us on WhatsApp

Please leave out passwords, QR codes, sign-in codes, API keys and the contents of customer chats. The page you were on, roughly when it happened, and a phone number with some digits hidden are usually enough.

What WhatSync does

WhatsApp for the AI agents you already use.

Your WhatsApp in your AI apps

Link your number and ask ChatGPT, Claude, Cursor or Codex about your chats: who is waiting on you, what a group decided, what a customer asked for. Your AI can draft and send replies you approve.

The WhatsApp Business API

Connect a number through Meta to send templates and campaigns to customers who opted in, from your AI app or your own code.

A CLI and an API for builders

Agents that run terminal commands use npx whatsync. Your own code uses the REST API and webhooks.

Free WhatsApp tools

Link and QR code generators, a text formatter, a template builder, cost calculators and more. They run in your browser with no account.

Who builds it

Anish Jain, founder

Anish is a full-stack developer who builds business software, from Shopify and monday.com apps to WhatsApp automation. WhatSync is a product of Appstronauts, his studio. Email and WhatsApp both reach him and the team directly.

Key facts

Product
WhatSync, by Appstronauts
What it is
WhatsApp for AI agents: a hosted WhatsApp MCP server, CLI and API
Works with
ChatGPT, Claude, Cursor, Codex and any app that can add a remote MCP server
WhatsApp connections
Personal WhatsApp (Linked devices) and the official WhatsApp Business API
Pricing
Personal $19 a month, Business $39, Team $79 (up to 5 numbers) and Agency $149 (up to 20 numbers). About 20% less billed yearly. Prices in USD. See pricing
Founder
Anish Jain
Support
Email and WhatsApp, in English

Questions

What is WhatSync?

WhatSync connects your WhatsApp to AI apps like ChatGPT and Claude, and to your own code. Your AI can search your chats, show who is waiting on you, and help you reply.

Which plan do I need?

Personal ($19 a month) links your personal WhatsApp to your AI apps. Business ($39 a month) adds the WhatsApp Business API, API keys and webhooks. Team and Agency run up to 5 or 20 numbers. See the pricing page.

How do I get help with setup?

Email hello@whatsync.app or message us on WhatsApp. Tell us the page you were on, roughly when it happened, and what you expected. Leave out passwords, QR codes, sign-in codes, API keys and the contents of customer chats.

Does WhatSync still work with Attio?

Yes. The Attio integration saves your WhatsApp chats to the right people in Attio. See the Attio guide and the other integrations.

Can I ask for a feature?

Yes. Tell us what you need and how you would use it. Requests from people using WhatSync help us decide what to build next.