WhatSync
WhatsApp for Cursor
Clients report bugs on WhatsApp. Cursor fixes them. With WhatSync, the agent reads the report itself.
How do you connect WhatsApp to Cursor?
Click Add to Cursor, or add WhatSync to ~/.cursor/mcp.json with the server URL. Then sign in from Cursor's MCP settings and link your WhatsApp. Cursor's agent can then read your chats and send messages you approve.
- Works in
- Cursor's agent
- You need
- Cursor. WhatsApp on your phone, or a WhatsApp Business API number.
- WhatSync server
- Hosted for you. Nothing to run yourself.
What Cursor can do with your WhatsApp
The bug report, verbatim
The agent pulls the client's exact words and steps instead of your paraphrase.
Close the loop
Draft the it-is-fixed message to the client group when the change is done.
Build WhatsApp features
Try templates, sends and webhooks with real tools while you write the code.
Add WhatSync to Cursor
You sign in to WhatSync once. No API keys to paste. Check what you need above first.
Add the server
Click Add to Cursor above, or add this to ~/.cursor/mcp.json for every project, or .cursor/mcp.json for one.
{ "mcpServers": { "whatsync": { "url": "https://whatsync.app/api/mcp" } } }Sign in
Open Cursor Settings, then Tools & MCP (just MCP in older versions). Next to whatsync, click Connect and sign in with Google or your email.
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. The agent can read permitted messages saved since you enabled saving; linking does not import your entire WhatsApp history.
Things to ask Cursor
Copy one, change the names, and try it.
Use WhatSync to read what Vikram said about the login page and fix it.
List every bug the client mentioned in the Acme group this week as a checklist.
Draft a WhatsApp to Vikram saying the login fix is live. Show it to me first.
Show me the variables our order_update template expects.
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.
- Cursor asks before running a tool unless you turn on auto-run. Keep auto-run off for the send tools.
- If the sign-in page does not open, update Cursor and click Connect again.
- Sends are real WhatsApp messages and run when your AI app allows the tool call. Keep send tools on manual approval and review the recipient and text. Asking the agent to wait is not an enforced approval setting.
- Use the Business API for campaigns to customers who opted in. The Business API does not permit unsolicited messages. Linked personal accounts can be restricted for violating WhatsApp's rules.
- Search covers saved message text, file names and captions. WhatSync does not index document contents, transcribe voice notes or read text inside images. A download link is available only when WhatSync saved the file.
- Group searches and replies require a linked personal WhatsApp. WhatsApp Business API tools work with customer conversations, templates and campaigns.
- An unanswered conversation means its latest saved message in the checked period is incoming. It is a follow-up signal, not proof that a question is unanswered or that you owe a reply.
Personal WhatsApp or the Business API
Cursor 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.
How do I add a WhatsApp MCP server to Cursor?
Do I need Node, Python or Docker?
Do I need to install anything?
Does it work with the WhatsApp Business API?
Is WhatSync made by Anysphere?
How much does it cost?
Sources
We checked these steps against Cursor's own docs on October 13, 2026. Menus change, so a screen may look a little different. WhatSync is not made or endorsed by Anysphere.
Use it in your other AI apps too
One WhatSync account works in all of them. Each guide says what you need.
Put your WhatsApp to work in Cursor
Your WhatsApp keeps working on your phone as normal. Unlink it whenever you like.