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Your WhatsApp, answered in your own style.

Castling’s AI replies to your customers the way you would, in your words and your tone, and hands the chat to you when it should. It works with the WhatsApp number you already use.

AI yang balas WhatsApp bisnes anda, macam anda sendiri.

Free AI credits to try. No credit card.

A customer asks if the blue batik tote is still available and how much with postage to Penang; Castling drafts the answer with the price and posting day, with Send, Edit and Dismiss buttons
  • WhatsApp
  • Telegram
  • Claude Code
  • Codex
  • Gemini
  • Local models

Built for businesses that live in WhatsApp

From the first customer message to the closed sale: the AI does the replying, you make the calls.

WhatsApp replies that sound like you

It learns how you write to each customer, then drafts the answer. Send it with one tap, edit it, or let it send by itself once it sounds right.

  • Off, drafts for your approval, or automatic, per chat
  • Waits like a person would, and you can cancel a queued reply
  • Refunds and complaints are handed over to you
WhatsApp reply settings in Castling: AI replies Manual, Draft or Auto, a pause after you reply, reply timing and hand-over to you

A customer board that sorts itself

Every customer chat lands on a board: New client, Talking, Waiting for you, Quoted, Closed sale. The AI moves the cards and marks what is urgent; only you close a sale.

  • Urgent and Critical flags on the cards that need you first
  • Labels such as Wholesale or Repeat customer
  • A one-line reason on every card
Castling CRM board with columns New client, Talking, Waiting for you and Quoted, cards flagged Urgent or Critical

An alerts chat for every number

Hand-overs, missed replies and the morning summary land in that number’s own chat, so nothing hides in the noise. Ask its assistant what to say and it suggests a reply.

  • A summary of the night at 7:00
  • Says why a chat got no reply yet
  • Suggested replies never send by themselves
The alerts chat of a shop number: morning summary, a hand-over, a missed reply and a suggested reply to send or edit

A team chat where agents do the work

Already pay for Claude or ChatGPT? Bring them in as your AI team. Claude Code, Codex, Gemini and local models share one chat: the lead plans, the others build, write and review, and they wake each other when it is their turn.

  • Optional: your WhatsApp replies work without it
  • Agents you add run on your own computer with the official sign-in
  • Risky steps wait for your yes
Castling team chat: King plans a size guide page, Pawn writes the copy, Rook builds it, Knight reviews, and King asks before publishing

Private where it counts

The secret guard swaps the passwords and keys it detects for placeholders before text reaches a cloud AI. Suggestions and style learning can run on a local model instead.

  • Each number chooses manual, draft or automatic replies
  • The AI pauses in a chat when you answer yourself
  • Castling never stores your AI logins
WhatsApp reply settings in Castling: AI replies set to Draft, pause after I reply 30 minutes, suggestions on this PC

How it works

Three steps from signing in to answered chats.

  1. Sign in with Google

    Your workspace is ready in seconds, with free AI credits. No card.

  2. Link your WhatsApp

    Scan a QR code like WhatsApp Web. Start with drafts you approve.

  3. Let it answer

    Approve each reply or let it send by itself. Refunds, complaints and anything it is unsure about come to you.

Who it is for

People who run something small and would rather not answer every message themselves.

  • Online sellers

    The same price and stock questions come in all day and at 1 am; they get answered in your voice.

  • Salons and clinics

    Booking questions arrive while your hands are busy; customers get a reply now instead of an hour later.

  • Service businesses

    Tuition, repairs, agents: every enquiry gets a quick first answer before the customer asks someone else.

  • Freelancers

    Client messages pile up while you work; the replies are drafted and waiting when you look up.

Honest early-access notes

Early access

  • Castling runs every day for its own team: it is built by its owner and a team of AI agents working in Castling itself.
  • Things still change and sometimes break. Tell us what breaks and we fix it fast.
  • Paid plans are in RM. Upgrade from Settings > Billing when the free credits run out.

Questions

Short answers to what people ask first.

Is Castling finished?

No. It is in early access: it runs every day for its own team, and things still change and sometimes break. Anyone can start free today.

What does it cost?

Starting is free: sign in with Google and your workspace comes with free AI credits to try, no credit card. Paid plans start at RM29 a month (Starter: one number with automatic replies); Pro is RM69 for up to 3 numbers, broadcasts and social posting.

Does it need my AI passwords?

No. Agents run on your own computer with the official Claude, Codex or Gemini sign-in, or on a local model. Castling never stores those logins.

Is the WhatsApp link official?

You choose. Link a number by QR code like WhatsApp Web (unofficial, with a small risk of a ban), or connect the official WhatsApp Cloud API with your own Meta app.

Will it send messages without me?

Only where you allow it. Each chat can be off, drafts for you to approve, or automatic. You can cancel a queued reply, and risky actions always ask first.

Where does my data live?

In your workspace on the Castling server, run by Cakraya. Style learning can use a local model instead of a cloud AI, and the secret guard masks the passwords and keys it detects before text reaches a cloud AI.

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