not a chatbot. not another ai agent.

The chief of staff you were never going to hire.

Mantrin does the job a great one does: knows your people, holds your promises, guards your calendar and closes the loops you forget. You just say it out loud, to whatever you're near.

Book a call 15 minutes, with the person building it.

“Move my five thirty, and tell Tanay I'll call after.”

Calendar moved, Tanay told. Your laptop and watch already know.

Everyone is building AI tools. We're building the one who uses them for you.

A memory store remembers. A voice app listens. A chatbot answers. None of them run your day.

  • A tool waits to be opened. Mantrin is already working while you're busy with something else.
  • A tool answers the question you asked. Mantrin closes the loop you forgot about.
  • A tool starts over every time. Mantrin has been paying attention for months.

Say it once. It turns into something that gets done.

you said

“I'm vegetarian, and Tanay is my co-founder.”

mantrin remembers
  • You're vegetarian
  • Tanay, co-founder
so later, it just

Booked dinner for two. Veg-friendly kitchen, 8pm, Tanay invited.

Remembers

Every conversation makes it know you better: your people, preferences and promises. Memory that compounds instead of resetting.

Understands

It connects what's happening across your world. Who matters, what's due, what you're actually trying to get done. Context, not answers.

Acts

It sends the message, holds the slot, chases the loose end. It does the thing, and asks first when the stakes are real.

It doesn't wait to be asked.

A good chief of staff notices before you do. Mantrin watches what's slipping, works out what actually needs you, and speaks up while there's still time to fix it.

Not more notifications. Fewer things for you to carry. And when something touches other people, it asks first: you stay in charge of anything that matters.

mantrin, unprompted

“You told Tanay the deck lands before Friday. It's Thursday and it's still in drafts. Want me to send it?”

Thursday, 9:40am. You hadn't thought about it yet.

man·trin

/ˈmʌn.trɪn/noun, Sanskrit

Today the job has other names: chief of staff, executive assistant, the person who runs your life so you can do your work. You still have to be rich or senior to get one. That's the part we're changing.

Everyone deserves a chief of staff.

We're building it for one person at a time. Tell us how your days actually run, and we'll tell you exactly where it is.

No signup, no waitlist. Just a conversation.