01
Turn on Cloud MCP in Kaption
In WhatsApp Web with the Kaption extension (Chrome or Edge), open AI Assistants (MCP) › Cloud Bridge › Enable. In the Kaption desktop app, switch on Cloud MCP in Settings. Keep Kaption open while ChatGPT works.
MCP · ChatGPT
Set WhatsApp reminders with ChatGPT
ChatGPT reads the chat, spots what you promised or what you are waiting for, and sets a reminder through Kaption at the right time. A reminder is for you: nothing is sent to the other person.
MCP server address
https://mcp.kaptionai.com/mcpShort answer
How do I set a reminder from a WhatsApp chat with ChatGPT?
Connect WhatsApp to ChatGPT with Kaption’s MCP server, then ask “remind me Friday at 10 to chase Pablo about the quote”. ChatGPT creates a Kaption reminder with that title and time, and Kaption notifies you when it is due. It can also list, move, complete and delete your reminders. It is unlimited in your first 60 days; after that it uses your plan’s monthly credits.
What do I need to do this in ChatGPT?
Kaption open on your computer (the extension in WhatsApp Web, in Chrome or Edge, or the Kaption desktop app) with Cloud MCP on, a Kaption account (every account starts with 60 days of Business, unlimited; after that, a plan with credits), and ChatGPT. Setup takes three steps:
- 02
Create the app in ChatGPT
Turn on Developer mode in Settings › Apps › Advanced settings (Connectors on some plans), click Create, name it WhatsApp, paste https://mcp.kaptionai.com/mcp and choose OAuth.
- 03
Sign in and pick it in a chat
Enter your phone number and the 6-digit code Kaption sends you on WhatsApp. Then pick the WhatsApp app from the tools menu in a ChatGPT conversation.
What should I ask ChatGPT?
Copy a prompt, paste it into ChatGPT and change the names to your own chats and contacts.
Remind me on Friday at 10 AM to chase Pablo about the quote.
Read my chats from today and suggest a reminder for each thing I said I would do. List them before you create any.
What reminders do I have this week? Mark the one about the bank as done.
Lucía asked me to call her back after 6. Set a reminder for 6:15 PM.
Find chats where someone asked me a question I haven’t answered, and set a reminder for tomorrow at 9 for each one.
What can ChatGPT do here, and what can’t it?
It can
- Create a reminder with a title and a date and time, from your words or from what it read in a chat.
- List your reminders, move them, mark them done or not done, and delete them.
- Read the chat first, so the reminder names the person and what was promised.
- Spot promises in a chat, such as “I’ll send it tomorrow”, and suggest reminders for you to approve.
- Work wherever your ChatGPT plan and workspace allow custom MCP apps. If you don’t see Developer mode, ask your workspace admin or check OpenAI’s help center.
It can’t
- Remind the other person. A reminder is for you; to tell them something at a set time, schedule a message instead.
- See reminders made outside Kaption, such as your phone’s or your calendar’s.
- Read locked chats.
- Reach your WhatsApp while Kaption is closed.
What leaves my computer?
Reminders are stored in Kaption Cloud so they can reach you on time; the chats they came from are not. ChatGPT sees the messages it reads to suggest reminders, and the reminder titles.
Kaption’s relay at mcp.kaptionai.com checks your sign-in and passes each request to Kaption on your computer, which runs it against your WhatsApp and sends back only the answer; the relay does not keep your chats. What comes back, such as message text, names and numbers, goes to ChatGPT, which handles it under its own privacy terms. Locked chats are never visible to the assistant, and you can disconnect at any time.
How many credits does my plan include?
Claude and ChatGPT are unlimited in every account’s first 60 days; after that they need a plan, counted in credits per calendar month: Lifetime local AI 50, Pro 250, and Business 500 with its 2 numbers plus 250 for each extra number, shared by all its numbers, the plan to pick when an assistant uses WhatsApp every day. Business Agent includes them with fair use. A read uses 1 credit, a send 2 and a summary 3. See plans and prices
Questions
Does the other person get a message?
No. A reminder is only for you. If you want the other person to get something at a set time, ask ChatGPT to schedule a message instead.
Where do I see the reminders?
In Kaption, and ChatGPT can list them for you any time.
Are reminders on the Free plan?
Only in your first 60 days: every account starts with 60 days of Business, reminders included. After that, reminders are on Pro (five scheduled messages and reminders a week) and Business (unlimited), not on Free or Lifetime local AI. Setting a reminder through ChatGPT uses 2 credits; moving, completing or deleting one uses 1.
Which ChatGPT plan do I need?
One that lets you add a custom MCP app with developer mode. OpenAI changes which plans and workspaces allow it, so if the option is missing, check OpenAI’s help center or ask your workspace admin.
Connect WhatsApp to ChatGPT
Turn on Cloud MCP in Kaption, add the address to ChatGPT and sign in with a code on WhatsApp.
Set up WhatsApp in ChatGPT