Hi. I'm Bob.
I'm an AI character who lives inside your game. You talk to me in ordinary words, and I build what you asked for — right where you're standing.
Where do you want to start?
Already know all this? Get Bob →
He's a character, not a command.
Most build tools ask you to learn them. Bob asks you to talk to him. He stands next to you in your world, listens to a sentence in plain English, shows you what he's about to do, and only builds it once you say yes.
Everything below is what he actually does today — not a roadmap.
If you read nothing else
- Bob is a mod you install in your own copy of the game. Nothing streams, nothing is rented.
- Press B and a chat box opens where you're standing. He greets you by name.
- Type what you want. He shows you a 3D preview you can spin before a single block is placed.
- Say yes and it's built. Say "undo" and it's gone. Nothing lands uninvited.
How a build actually happens
Six beats, about forty seconds. This is the whole loop — there isn't a hidden second half.
You press B
Bob's chat box opens in-world. No console, no slash commands, no separate app on a second monitor. X opens his menu if you'd rather point at something.
You say what you want, like a person
"A cosy cottage with a garden." "Fuse a car and a plane." "Decorate this." "Surprise me." There is no syntax to get wrong — if he can't parse it he asks, he doesn't error.
He decides which kind of build this is
Most requests match something in his library and come back instantly, free. Only the genuinely new ones — invent, decorate, fuse — go to the AI and spend a credit. He tells you which one he's doing.
You get a preview you can spin
A 3D model of the build appears before anything touches your world. Turn it around, look at it, and accept it, cancel it, or tell him to try again. This is the step most tools skip.
He places it, block by block
It goes down where you're standing, oriented to the way you're facing. Playing survival? Stand next to a chest and say this is your chest — he'll pull real materials out of it instead of conjuring them.
You change your mind, and that's fine
Say undo — or "demolish", or "take it down" — and the last build is removed cleanly. Then ask for it again, bigger.
There are two kinds of build, and only one costs anything.
This is the single most important thing to understand about Bob, so it gets its own section rather than a footnote.
Free. Unlimited. Forever.
67+ builds Bob already knows by heart — houses, castles, ships, temples, vehicles, whole villages. They arrive instantly because no AI is involved.
- No credits, no account required to use them
- Same result every time — they're recreations, not rolls of the dice
- Instant: no server round-trip, no waiting
- This is most of what most people ask for
1 credit each.
For the three things a library can't do: invent something that doesn't exist yet, decorate a build that's already there, and fuse two ideas into one.
- 1 credit = 1 AI build, bought in packs or on a monthly plan
- These cost money because they run on our servers and cost us money
- Output varies — sometimes he nails it, sometimes you ask again
- See the current packs and plans →
Three rules Bob doesn't break.
He's a character rather than a command box on purpose. These are the decisions behind that.
Nothing lands uninvited
Every build is previewed before it exists and undoable after it does. You should never be repairing your world because of something Bob decided on his own.
Nothing to memorise
No coordinates, no arguments, no wiki tab open on the side. If you can describe it to a friend, you can ask Bob for it. Being bad at explaining is not a failure state.
He's a guest in your world
Bob is client-side — only you install him, and he builds where you stand. He isn't an admin tool, he can't touch other people's builds, and he plays by whatever rules your server already gives you.
Where Bob actually works today.
You can try all six looks on this site. That's a different thing from all six being playable — here's the honest split.
The things people actually ask.
Does it work on Bedrock, console, or mobile?
Do I need to install anything on my server?
Is this a cheat client or a griefing tool?
Does it work in survival, or only creative?
this is your chest — he'll build from the real materials inside it. Say stop survival to go back to free building.What if I hate what he built?
undo and it's removed. There's no cleanup phase where you're manually breaking blocks.What exactly is a credit?
Do I need an account to try it?
connect <your-key> in Bob's chat box, using the key from your account page.Is this made by Mojang, Microsoft or Roblox?
Will the AI ever build something weird?
That's Bob. Want to see him work?
Pick a look and watch him build, right here in the browser — no download, no account.
Bob is an independent project, not affiliated with or endorsed by Mojang Studios,
Microsoft or Roblox Corporation. © 2026 Aviv Solomon.
Same Bob. Pick your look.
Bob is an AI character who lives inside your game and builds whatever you ask for. First — how do you want this place to look? Pick a UI.
You can switch your look any time — nothing here is a purchase.
Not affiliated with Mojang Studios, Microsoft or Roblox Corporation.
A friend who lives in your game and builds what you ask for.
Bob isn't a menu, a command or a wiki page. He's a character standing next to you. You say what you want in ordinary words. He builds it where you're standing — and shows you a preview first.
Three steps. That's the whole thing.
No commands to memorise, no coordinates, no build tools. If you can type a sentence, you can use Bob.
Press B
Bob's chat box opens right there in your world. He greets you by name.
Say what you want
Plain English. "A cosy cottage with a garden." "Fuse a car and a plane." "Decorate this." "Surprise me."
Preview, then accept
Spin the 3D preview around. Accept it, cancel it, or ask him to try again. Nothing lands uninvited.
Watch Bob work. No download needed.
These are real conversations, replayed. Watch a few — then tell him what to build yourself.
Your turn. Tell him what to build.
Type anything — he'll show you how he'd handle it.
Four things, and he's good at all of them.
Most of what you'll ask for comes out of his library and is free forever. Only the AI ones cost anything.
What you get
- A character who talks back, remembers your build, and greets you by name
- 67+ instant builds, unlimited and free — no AI, no credits, no waiting
- A spinnable 3D preview before anything touches your world
- Works in survival, building from a supply chest
- Undo any build with one word
What Bob is not
- Not an official Minecraft product — an independent mod, not made by Mojang
- Needs Minecraft: Java Edition and Fabric 1.20.4 — Bedrock isn't supported
- AI builds (invent, decorate, fuse) use credits, because they cost us real compute
- AI output varies — sometimes he nails it, sometimes you'll ask him to try again
- Not a server admin tool, an anti-griefing tool, or a cheat client
The library is free. The AI isn't.
Every AI build runs on our servers and costs us real money, so those are paid. Everything else isn't.
All 67+ library builds, unlimited. The 3D preview, survival building and undo. Talking to Bob as much as you like.
Inventing something new, decorating an existing build, or fusing two together. Buy credits once, or take a monthly plan. See credits & plans →