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 Claude works.
MCP · Claude
Schedule WhatsApp messages with Claude
Tell Claude who, what and when. It drafts the message, checks it with you, and schedules it through Kaption, or queues it to go out now from your computer. One message to one chat at a time: Kaption does not do bulk sending.
MCP server address
https://mcp.kaptionai.com/mcpShort answer
How do I schedule a WhatsApp message with Claude?
Connect WhatsApp to Claude with Kaption’s MCP server and say “schedule a message to Sam for 9 AM tomorrow: happy birthday!”. Claude finds the chat, shows you the text and the time, and schedules it once you confirm: one message to one person, up to 800 characters. From Kaption 0.94 it can also send now from your computer, on by default, within 8 messages an hour and 20 a day, and you can turn that off in Kaption.
What do I need to do this in Claude?
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 Claude. Setup takes three steps:
- 02
Add the connector in Claude
Go to Customize › Connectors, click + Add › Add custom connector, name it WhatsApp and paste https://mcp.kaptionai.com/mcp.
- 03
Sign in and switch it on
Enter your phone number and the 6-digit code Kaption sends you on WhatsApp. Then, in a Claude chat, click + › Connectors and turn WhatsApp on.
What should I ask Claude?
Copy a prompt, paste it into Claude and change the names to your own chats and contacts.
Schedule a WhatsApp message to Sam for tomorrow at 9 AM: “Happy birthday! Have a great day.” Show me before you schedule it.
Schedule a message to the plumber for Monday at 8 AM confirming Wednesday for the repair. Draft it and let me confirm.
What messages do I have scheduled this week? Move the one to Laura to Friday at 10.
Cancel the scheduled message to the dentist.
Reply to Carla’s last message saying I’ll be 15 minutes late, and send it now once I approve the text.
What can Claude do here, and what can’t it?
It can
- Schedule one message to one person at a set date and time, up to 800 characters.
- List, edit and cancel your scheduled messages.
- Queue a message now from your computer to an existing person chat or an eligible group, with one attachment up to 8 MiB.
- Draft the text from the conversation, so the message fits what the other person said.
- Work on Claude Free, Pro, Max, Team and Enterprise. Free can add one custom connector, which is enough for Kaption.
- Work in Claude Code too: claude mcp add --transport http whatsapp https://mcp.kaptionai.com/mcp
It can’t
- Send in bulk or to lists of people. Kaption does not do mass messaging, and bulk or unsolicited messages break the terms.
- Go past the limits: 8 messages an hour and 20 a day from your computer, plus group limits and delays. “Queued” is not proof of delivery.
- Schedule a timed message to a group: scheduled messages are for one-to-one chats.
- Turn sending back on. If you switch off “Let assistants send messages from this computer” in Kaption → AI assistants → Connections, the assistant cannot change it.
What leaves my computer?
A scheduled message is stored in Kaption Cloud until it goes out; your chats are not. A message sent now goes out from WhatsApp on your computer, which must stay on with WhatsApp open. Claude sees the text you agree on and the chat it goes to.
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 Claude, 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
Will Claude send a message without asking me?
It should confirm the text and the recipient with you first, and Kaption tells you the first time an assistant sends. Sending from your computer is on by default from Kaption 0.94; to stop it, turn off “Let assistants send messages from this computer” in Kaption → AI assistants → Connections. With it off, Claude can still schedule one message to one 1:1 chat.
Can it message someone I have never chatted with?
Sending now works only to an existing person chat or an eligible group, so start the conversation in WhatsApp yourself first.
Can I use it to send a campaign?
No. Kaption is for one-to-one messages people expect. It has no bulk or mass sending, and the limits keep it that way.
Do I need a paid Claude plan?
No. Claude Free can add one custom connector, which is enough for Kaption. On Team and Enterprise, an owner adds the connector once in Organization settings › Connectors and each member clicks Connect.
Connect WhatsApp to Claude
Turn on Cloud MCP in Kaption, add the address to Claude and sign in with a code on WhatsApp.
Set up WhatsApp in Claude