YOUR PERSONAL AGENT ON WHATSAPP
César doesn't answer — he acts. On WhatsApp he does the grocery run, picks up the phone, messages people on your behalf, logs into websites and fills in what's needed, finds you something to do this weekend and brings you the bill with its Pix ready on the due date. You ask the way you'd ask a person — and he comes back with it done.
Or save the number: +55 31 99210-9863
Also on Telegram
we're out of Thor's dog food and coffee
Found both at your stores: N&D 10.1 kg and your usual coffee. R$ 213.40, delivered today. Shall I place the order?
go ahead
Order placed ✅ Your Pix for R$ 213.40 is right here: QR code and copy-and-paste. Pay it and I'll confirm with the store, then tell you when it's out for delivery.
what did I miss on WhatsApp today?
4 chats with unread messages: Building manager (3) — meeting Tuesday 7pm, asking if you're going; Mum (1); Build 2026 (12, group); Dr. Paulo (1).
tell the manager I'll be there
Sent from your WhatsApp ✅ “I'll be there, Tuesday 7pm.”
call the clinic and cancel my appointment tomorrow
Just called: spoke to the front desk and tomorrow's appointment is canceled. They offered Thursday at 2pm — take it? The full transcript is right here.
take it
chase Carla for the R$ 350 for the cake, gently
Sent. I introduced myself, mentioned Saturday's cake and shared your payment code. You can see the whole conversation here.
Carla: Oh no, I forgot! Just paid, sorry 🙏
check my car's road tax and get a copy of the power bill
I logged into both sites. The second road-tax instalment, due the 20th, and the power bill, R$ 130.16. Both slips are here.
paid both
what's on this saturday near me? something with live music, under R$ 100
Three good ones: a gig at Mercado das Borboletas (R$ 60, 9pm), live samba at Parque Municipal (free) and stand-up at Teatro Bradesco. Add one to your calendar?
the gig. remind me about the ticket today
0:04 Voice note: spent 48 90 on lunch, on the card
“spent 48 90 on lunch, on the card”
Logged: R$ 48.90 under Food, on the card. You've used 62% of this month's budget — and on the 1st the monthly summary arrives ready.
make an 8-slide deck with the quarter's results, use the spreadsheet I sent you
Ready: q3-results.pptx, 8 slides — revenue, margin, top 3 clients and the month-by-month chart. Want a PDF too?
WHERE HE ACTS
Groceries, pharmacy, pet shop, delivery, marketplaces, subscriptions, tickets, travel, real estate: César talks to each of these services for you — finds the product, fills the order, confirms it with you and hands back the Pix, ready to pay. You never open the site.
123 stores, apps and services he already handles for you
And the list keeps growing: new stores and services land most weeks. Can't find yours? Ask for it by name and César tells you right away whether he's already there.
WHAT YOU CAN DELEGATE
All by message, on WhatsApp, in your own words. He runs it end to end and only comes back with the news — and anything that spends your money or acts outside the chat waits for your go-ahead.
“We're out of dog food and coffee.” He finds them at your stores, fills the cart, confirms the price with delivery and, once you say yes, places the order and hands you the Pix ready to pay — all that's left is paying it. Groceries, pet shop, pharmacy, drinks: ordered, with a ping when it's out for delivery.
Canceling the dentist, confirming the booking, asking whether the order is ready: César actually calls, talks to whoever answers and comes back with the answer and the full transcript.
Connect your own account and ask “what did I miss on WhatsApp?”: he tells you which chats have unread messages and what each person wants, groups included. “Tell them I'll be there” goes out from your number, with the text in front of you before it sends. And when you prefer, he talks to someone from his own number: introduces himself, gets it done, and you see both sides.
Road tax, duplicate slips, invoices, forms, that portal that only works on a desktop: he navigates, fills it in and brings back the slip or the receipt. Biometrics and captchas he hands to you; the rest is his.
A bill coming due, a parcel out for delivery, a delayed flight, a price that dropped, a birthday ahead: he watches while you do something else. “Remind me at 6pm” fires at 6pm sharp, on WhatsApp.
A spreadsheet of your spending, an 8-slide deck, a contract summarized, a chart, merged PDFs, an image made from scratch — even a custom app to track clients or rentals. You describe it in the chat; it comes back ready.
And this is just the beginning.
If it fits in a request made in your own words, it fits in César. The limit is your creativity.
— opens a WhatsApp conversationSTART TODAY, BETTER TOMORROW
There's no setup to do. There's a conversation to start — and it gets more useful every day.
You send the first message and ask away: a phone call, an order, a bill. Connect your email and he finds what's due this week.
He already knows your store, your address, who Carla is, what you spend on lunch and when you want to be pinged.
He gets there before you remember. The thing that ran out, the bill, the flight, the birthday: handled before it becomes a to-do.
WHERE YOU ALREADY ARE
You can live entirely on WhatsApp: that's where you ask, where he pings you and where he sorts things out with other people on your behalf. Telegram is there for when you want the same account on another screen.
Message César on his number and your account is born with the first message. It's the shortest way to have an agent getting things done for you.
Prefer Telegram? @UseCesarBot is the same César, with the same account and the same memory.
You decide where he pings you — WhatsApp, Telegram, your phone or nowhere. And every conversation he has with someone else on your behalf stays visible to you, one tap from taking over.
PRICING
César charges for what you use, in César Tokens. Everyone starts with 1 million a month, free, for as long as they like — and a plan gives you more tokens for less than buying them one-off.
$0 /month
1 million César Tokens per month
about 160 conversations a month
Use César every month without paying, with no end date. The allowance renews by itself every 30 days; whatever is left does not carry over.
R$ 29.90 per month
4 million César Tokens per month
about 650 conversations per month
For people already using César daily. 25% cheaper per token than buying one-off.
Most chosen
R$ 299 per year
7.5 million César Tokens per month
about 1,200 conversations per month
For people who really delegate — one charge a year, under R$ 25 a month.
Every allowance — the free one and the plans' — is for the month and does not roll over. When you subscribe, the plan allowance replaces the free one; if you cancel, you go back to Free automatically. Only one-off tokens are kept and never expire. Conversation estimates are averages — real usage depends on how big each request is.
FREQUENTLY ASKED QUESTIONS
Short, straight answers. If your question isn't here, just ask César himself — or talk to us.
No. Tap the button on this page, WhatsApp opens on César's chat and you send a message. He introduces himself, you accept the terms with one tap and the account is created — no email, no password, no card. If you prefer another screen, the same account opens on Telegram.
ChatGPT talks; César does. He's connected to your things — calendar, email, finances, your stores, your WhatsApp — and he acts in the world: “cancel the dentist” doesn't become a text explaining how to cancel, it becomes the dentist canceled. And he remembers you from one day to the next.
He really buys, at the stores that already deliver to your address: he fills the cart, checks the price with delivery and shows you everything first. Not a cent moves without your “go ahead” — and you see the items, total, payment method and delivery window on the same card where you confirm.
Nothing, if you want. Every account gets 1 million César Tokens a month, free and with no end date — about 160 conversations. If they run out early, buy one-off tokens (which never expire) or subscribe from R$ 29.90/month. Every cent of usage is visible on the Usage screen. No catch.
You choose what to connect and can disconnect instantly. And there's one rule with no exceptions: any action with an effect outside the conversation — sending an email, touching an event, buying something, changing a file — only happens after you confirm it. César proposes; you press the button. Your data is not sold, not used for advertising and never trains a model.
It is. The subscription cancels in two clicks, no fee and no call to “understand your reasons”. Leftover one-off tokens stay yours. And account deletion erases your data, right from your profile.
One message on WhatsApp and he's already working for you. Free, no sign-up, in under a minute.
— opens a WhatsApp conversation