WhatSync
WhatsApp for OpenAI dots
Your dot keeps working after you close ChatGPT. With WhatSync, it can keep an eye on your WhatsApp too.
How do you connect WhatsApp to OpenAI dots?
A dot uses the plugins installed on your ChatGPT account. Add WhatSync once as a custom MCP plugin on ChatGPT web: Plugins, the plus button, then Add custom MCP server. Sign in, install it, link your WhatsApp, and ask your dot to use WhatSync.
- Works in
- Dots in ChatGPT, on Pro, Business Premium and Enterprise
- You need
- ChatGPT Pro (age 18 or over, outside the EEA, UK and Switzerland), Business Premium, or Enterprise with dots turned on by an admin. Permission to add custom MCP plugins in ChatGPT. WhatsApp on your phone, or a WhatsApp Business API number.
- WhatSync server
- Hosted for you. Nothing to run yourself.
What OpenAI dots can do with your WhatsApp
Chats waiting on you
Every morning your dot checks who is waiting on a reply and sends you the list.
Follow-ups that don't slip
It checks a chat each day until the customer answers, then drafts the next step for you.
WhatsApp next to your other tools
A dot can use WhatSync with your other plugins, like turning orders from a group into rows in a sheet.
Add WhatSync to OpenAI dots
You sign in to WhatSync once. No API keys to paste. Check what you need above first.
Add WhatSync to ChatGPT
On ChatGPT Plugins, select the plus button, then Add custom MCP server. Name it WhatSync and paste the server URL. Already use WhatSync in ChatGPT? Skip this: your dot uses the same plugins.
https://whatsync.app/api/mcpSign in and install
Choose OAuth, sign in to WhatSync with Google or your email, select Create as a plugin, then install it and keep it turned on.
Link your WhatsApp
Open your WhatSync dashboard and link your personal WhatsApp from Linked devices on your phone, or connect the WhatsApp Business API. If you ask your agent something first, it replies with a sign-in link that works for 15 minutes.
Choose what it can see
On the What's saved page, enable message saving, pick the groups to include and keep any person out. Groups stay off until you tick them. Your agent sees messages saved from the moment you turn saving on, not your whole WhatsApp history.
Give your dot the job
Open your dot in ChatGPT and tell it what to look after, like a morning list of chats waiting on you. Ask it to show you drafts before anything is sent.
Things to ask OpenAI dots
Copy one, change the names, and try it.
Every weekday at 9, use WhatSync and send me a list of WhatsApp chats waiting on my reply.
Check the Orders group each evening and add any new orders to my sheet.
Until Rahul replies about the quote, check our WhatsApp chat each morning. When he does, draft a reply for me to approve.
Good to know
You choose which chats are saved, and you can unlink WhatsApp from your phone at any time. How we handle your data.
- OpenAI says a dot can use the supported plugins installed and enabled on your account. It doesn't list which custom plugins count, and we haven't tested WhatSync inside a dot yet. If your dot can't see WhatSync, use it in a normal ChatGPT chat.
- A dot decides for each action whether it can go ahead or needs your approval. Tell it to show you drafts first, and check its Activity after the first few runs.
- Sends are real WhatsApp messages. Set the send tool to ask you every time in your AI app's settings. Telling the agent "ask me first" in a chat is not the same thing.
- Messaging many customers? Use the Business API, and only message people who agreed to hear from you. Bulk messages from a personal number can get it restricted by WhatsApp.
- Search looks at message text, file names and captions. It does not read inside documents or images, or transcribe voice notes.
- Groups only work on a personal WhatsApp linked from your phone. The Business API covers customer chats, templates and campaigns.
- "Waiting on you" means the last message in a chat came from the other person. It's a hint to check, not a to-do list.
Personal WhatsApp or the Business API
OpenAI dots can tell which one you have and uses the right tools for it.
Your personal WhatsApp
- Link the WhatsApp you already use, like WhatsApp Web
- Chats, groups, files, polls and reactions
- For normal one-to-one use, not bulk sending
WhatsApp Business API
- Templates and campaigns your agent can send
- Meta reviews templates and charges per message
- Only for customers who opted in
Questions
Something else? Ask us.
What are OpenAI dots?
Do I need to add WhatSync again for my dot?
Can my dot reply on WhatsApp for me?
Can I talk to my dot on WhatsApp?
Do I need to install anything?
Does it work with the WhatsApp Business API?
Is WhatSync made by OpenAI?
How much does it cost?
Sources
We checked these steps against OpenAI dots's own docs on October 16, 2026. Menus change, so a screen may look a little different. WhatSync is not made or endorsed by OpenAI.
Use it in your other AI apps too
One WhatSync account works in all of them. Each guide says what you need.
Add WhatSync to OpenAI dots
Your WhatsApp keeps working on your phone as normal. Unlink it whenever you like.