WhatSync
DashboardConnect WhatsApp

Put your WhatsApp chats to work in Claude, ChatGPT, Gemini, Cursor, Grok, and Manus

WhatsApp Business API and personal numbers, connected to your AI agents. Search chats, reply to customers, and send templates from Claude, ChatGPT, or your own code.

Add to ChatGPTConnect WhatsApp
Works withClaudeChatGPTGeminiCursorCodex

Set up in a few minutes

Nothing to install on your phone. Your WhatsApp keeps working exactly as before.

1. Add WhatSync to ChatGPT

Open the app in ChatGPT and connect it. You sign in with your email or Google account.

2. Link your WhatsApp

Link it from Linked devices in WhatsApp on your phone. No password needed.

3. Pick the chats, then ask

Choose which chats and groups ChatGPT can see. Then ask it anything about them.

Add to ChatGPT

What people use it for

Real examples from people who use WhatSync with ChatGPT today.

Shared expenses into a sheet

One person shares costs in a WhatsApp group. ChatGPT reads only that group and keeps their Google Sheet up to date.

Add this week's expenses from the house group to my sheet.

Replies and appointments

Someone with ADHD uses ChatGPT to keep track of who is waiting for a reply and which appointments are coming up.

Who is still waiting on me, and what do I have this week?

Supplier quotes and shipping

A founder running several online stores has ChatGPT track quotes, shipping, and open questions across supplier chats, and draft the replies.

Which suppliers still owe me a quote, and what did they say about shipping?

Invoices and bank reconciliation

Someone in finance at a large glass manufacturer in Brazil gets invoices, payment receipts, and bank statements on WhatsApp. ChatGPT keeps them organised for accounts payable and bank reconciliation.

Which invoices and payment receipts came in this week, and from whom?

You decide what it sees

You choose which chats and groups your AI can work with.

You pick the chats

Choose which chats and groups to share with your AI. You can change this in your settings.

You review before sending

AI apps like ChatGPT ask you to confirm actions such as sending a message. Check it, then approve.

We don't sell your messages

We don't sell your messages or use them for advertising. Details are in our Privacy Policy.

Unlink any time

Remove WhatSync from Linked devices in WhatsApp whenever you like.

What your AI can do on WhatsApp

Search your chats

Find any message, file name, or caption, in plain words.

See who is waiting

List the chats where someone wrote last and nobody has replied yet.

Reply for you

Your AI drafts the message for you to check and confirm.

Summarise a chat

Catch up on a long group or a busy thread without scrolling.

Send templates

Send Meta approved message templates through the WhatsApp Business API.

Run campaigns

Send one message to a list of customers, with the price shown before you send.

Personal WhatsApp or Business API

Start with your personal WhatsApp. Add the Business API to message customers at scale.

Your own number

Personal WhatsApp

  • Link the number and app you already use
  • Best for your own chats and groups
  • Not for messaging many people at once
Link your WhatsApp
Official

WhatsApp Business API, through Meta

  • Send Meta approved templates and campaigns
  • Meta charges per message, by country
  • The only allowed way to message many people at once
Connect the Business API

Building your own agent?

Connect any MCP client to WhatSync and get more than 40 WhatsApp tools. Prefer plain HTTP? Send template messages with our REST API.

Developer docs
https://whatsync.app/api/mcp

Works with Claude Code, Cursor, Codex, and other MCP clients.

search_messageslist_unanswered_conversationssend_messagecreate_campaignand more

Questions people ask

Something else? Email [email protected].

Getting started

What is WhatSync?

WhatSync links your WhatsApp to the AI you already use, like ChatGPT or Claude. Your AI can then read your chats, tell you what you missed, find what people sent you, and draft replies that you approve before they go out.

What do people use it for?

Mostly to keep up. The most common requests are "summarise this group", "what happened in my chats today" and "who is still waiting for my reply". People also use it to find invoices, quotes, photos and order numbers, and to turn chats into a sheet or a to-do list.

Which AI apps does it work with?

ChatGPT, Claude, Codex, Cursor and any other AI app or tool that can add an MCP server, such as Lindy, Grok or n8n. There is a setup guide for each one.

How long does setup take?

A few minutes. Add WhatSync to your AI app, then scan a code from Linked devices in WhatsApp on your phone. No password, and nothing to install on your phone.

Does it work with my existing WhatsApp?

Yes. You link the number you already use, on iPhone or Android, including the WhatsApp Business app. You keep using WhatsApp as normal, and linking does not delete or change any chats on your phone.

Does my phone need to stay on?

No. Like WhatsApp Web, the link keeps working while your phone is off. Open WhatsApp on your phone at least once every 14 days, or WhatsApp logs out its linked devices.

What your AI can do

Can it read my older messages?

Yes. The free trial, Plus and Pro show your newest 1,000 older messages: 500 from one-on-one chats and 500 from groups. Max shows your whole history, as far back as your phone has it, and keeps filling in older chats. WhatSync keeps everything your phone sends, so moving to Max shows it all. More on what is saved.

Do group chats work?

Yes. On every paid plan all your groups are saved by default, and you can untick any group to hide it. The free trial shows a sample of your groups (your newest 500 older group messages); saving new group messages needs a paid plan. The WhatsApp Business API has no group chats, because Meta does not offer them there.

Does it understand voice notes and photos?

On Pro and up, yes. Voice notes are turned into text in any language, and photos, receipts and scanned documents are read, so your AI can search and quote them. On Plus your AI sees that a file was sent, with its name or caption.

Can I get a daily summary?

Yes. Many people have their AI check WhatsApp on a schedule, for example a morning task in ChatGPT or Codex that lists what came in and who is waiting for a reply.

Can it send messages for me?

Yes. Your AI writes the message and your AI app asks you to confirm before it goes. Check who it goes to and what it says, because you are responsible for what you approve.

Privacy and safety

Can I choose which chats it sees?

Yes. In your settings you can hide any group, and hide one-on-one chats with certain people (Everyone except), or show only the people you pick. Hidden chats are kept, not deleted, so they come back if you show them again. To delete a chat for good, remove it in Chats.

What do you do with my messages?

We process them to provide the service. We don't sell them or use them for advertising. AI apps you connect, such as ChatGPT, handle data under their own terms. Full details are in our Privacy Policy.

Can my number get blocked?

WhatSync uses WhatsApp's own Linked devices feature, like WhatsApp Web. WhatsApp can restrict numbers that send bulk or unsolicited messages, so AI apps can send at most 15 messages a day from a personal number. To message many customers, use the WhatsApp Business API.

How do I disconnect?

Remove WhatSync from Linked devices in WhatsApp on your phone, whenever you like. It stops receiving your messages straight away.

Plans, Business API and help

Is there a free trial?

Yes, 7 days. The trial saves your first 500 new messages from one-on-one chats, and also shows your newest 1,000 older messages (500 from chats, 500 from groups), which do not count toward the 500. Saving new group messages and your full history come with a paid plan.

How much does it cost?

Plus is $19 a month, Pro $29, Max $49, and Business $79 with the WhatsApp Business API. Paying yearly costs less. See the pricing page.

Do I need the WhatsApp Business API?

Only to message many customers at once, or to send Meta approved templates and campaigns. For your own chats and groups, linking your WhatsApp is enough. Meta charges per Business API message, by country.

Can I use it from my own code?

Yes. Add https://whatsync.app/api/mcp to Claude Code, Cursor or Codex for more than 40 WhatsApp tools. Max includes API keys and webhooks for n8n, Make, Zapier and your own code. See the developer docs.

How do I get help or ask for a feature?

Email [email protected] or use the contact page. Feature requests from people using WhatSync decide what we build next.

Ask your AI what you missed on WhatsApp

Free for 7 days. Link it in a few minutes, pick the chats, then ask.

Add to ChatGPTConnect WhatsApp
WhatSync

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