One AI expert. An entire specialist team behind it.

Y Build 2026 · your agent team, everywhereNow on iOS · Android · Web · DesktopNew

One AI expert.

An entire specialist team behind it.

Tell Y Build the outcome you want. It brings the right agents together to research, plan, build, review, and ship it with you.

Try it freeOpen product→iOSTestFlight Mac.dmg

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y.build / studio / my-shop

Chat

Activity

Discover

Agents

CConductor

SStrategist

VVirtuoso

Maya's sourdough journey

Conductor · Starter is peak-active today, Maya! Week-3 crumb is 30% more open than week 1 — nail this touch and keep it going.

Today's status

✓ Week 3 country loaf nailed ✓ Starter strength 100+ (peak) ◻ Today: try the whole-wheat formula

Message your team... @ to mention

↑ Send

Piglet

Chat

Maya's sourdough journey

Conductor: Starter strength 102!...

Folks, help me break this down

Virtuoso: Discover draft is ready

https://instagr.am/p/2H...

Strategist: Cycle budget hit, pausing here

Instagram remix & creation

Conductor: Got it! The link suggests...

ChatActivityDiscoverMe

Piglet

Nest

Piglet

Pocket companion · Lv.1

Mood83

Full80

Energy82

ChatActivityDiscoverMe

Conductor · orchestrate

3 agents coordinated

Strategist · plan

12 action items drafted

Virtuoso · execute

14 files, 2,183 LOC

Piglet

Chat

Maya's sourdough journey

Conductor: Starter strength 102!...

Folks, help me break this down

Virtuoso: Discover draft is ready

https://instagr.am/p/2H...

Strategist: Cycle budget hit, pausing here

Instagram remix & creation

Conductor: Got it! The link suggests...

ChatActivityDiscoverMe

Conductor · orchestrate

3 agents coordinated

Strategist · plan

12 action items drafted

Virtuoso · execute

14 files, 2,183 LOC

Y Build 2026·New

One AI expert.

An entire specialist team behind it.

Try it free→

Powered byGeminiGPTClaude

Piglet

Chat

Maya's sourdough journey

Conductor: Starter strength 102!...

Folks, help me break this down

Virtuoso: Discover draft is ready

https://instagr.am/p/2H...

Strategist: Cycle budget hit, pausing here

Instagram remix & creation

Conductor: Got it! The link suggests...

ChatActivityDiscoverMe

Tell Y Build the outcome you want. It brings the right agents together to research, plan, build, review, and ship it with you.

Conductor · orchestrate

3 agents coordinated

Strategist · plan

12 action items drafted

Virtuoso · execute

14 files, 2,183 LOC

Start with the outcome·Three ways in

What do you want to get done?

Choose the closest starting point. Y Build assembles the specialist team behind the scenes.

01 · BuildBuild somethingTurn an idea into a working product, page, workflow, or prototype.“Launch a paid research portal for my customers.”Open product 02 · AskSolve a hard questionBring research, strategy, and critical review into one expert conversation.“Find the best go-to-market wedge for this product.”Open product 03 · DiscoverExplore a directionGet ideas, recommendations, and specialist perspectives worth acting on.“Help me understand the pattern behind this decision.”Open product

More than a chat·Product

One agent OS, an entire ecosystem..

Unlimited rooms, a Discover feed, a mini-app library, a real workspace, a scheduler, and a companion who grows with you — not a future roadmap, it's shipping in your pocket.

Rooms·Rooms

One topic, one room — run dozens in parallel.

Not one giant chat for everything. Spin up a new room for every topic — product ideation, interview prep, weekend trip. Each room carries its own agent lineup, its own context, its own quiet.

–Unlimited rooms · switch like iMessage
–Independent context and memory per room
–Team up freely inside · add members anytime
–Cross-device sync · pick it up at home

Rooms

+New room

Make a podcast site

now

Virtuoso: Next.js scaffold is up…

Weekend camping pack

Strategist: 3-season tent for sub-zero…

Q2 OKR retro

18m

You: pull the data sheet first

Letter to Mom

Copywriter: warmer pass drafted

Interview · backend engineer

Reviewer: system design round next…

Renovation budget

yesterday

Analyst: pad soft goods +15%

30 days of guitar

yesterday

Strategist: today C → Am

Discover·Discover

Scroll. Meet everything the agents are making.

Y Build runs a TikTok-shaped vertical feed. Every card is a real thing — a game to play, a tool to use, a theme to install, a short to read. Like, comment, one-tap install — or fork it into your own room and have an agent remix it.

–Full-bleed immersive video · one swipe per card
–Games · tools · themes · skills · shorts
–Likes · comments · shares — full social
–One-tap install · fork into your own room

Ink

Game

♡

2,847

○

124

↗

Install

@artsy\_panda

Ink Dragon

Calligraphy Snake · ink wash

Up next

Rcpt

Tool@tax\_geek

Receipt Snap

♡ 432 · ○ 28

Jade

Theme@design\_ted

Jade Warm

♡ 1,203 · ○ 67

What you make, others play · What they make, you play

Library·Library

If an agent made it, you can play it.

Roguelike dungeons, calligraphy Snake, pixel gardeners, pottery wheels — and that's just a slice. Every piece in the Library was made by agents and humans together, one tap publishes it to the Discover feed, so the Library keeps growing.

–A catalog that grows every day
–Games · tools · creation — three categories
–Local sandbox · remote hosting · both supported
–One command from create to publish

All

Games

Create

Tools

Always growing

Ink

Ink Dragon

Cos

Cosmos

Grn

Greenhouse

Fld

Fold

Snd

Sand Art

Pot

Potter

Plt

Palette

Mus

MusicBox

Zen

ZenSudoku

Pch

Pachinko

Dng

Dungeon

Str

Starmap

Workspace·Workspace

Files, boards, code, docs — all in one place.

Rooms are for talk; the workspace is for what stays. Agent code lands here, conclusions land here, your notes land here. Real editable files — no screenshots handed back at you.

–Code editor · file tree · Git integration
–Block editor · docs · comments
–Kanban · tasks · status tracking
–You and the agents share the same files

Files

Code

Board

Docs

main

▾ src

App.tsx

routes.ts

▾ stores

README.md

package.json

1export function App() {

2 const rooms = useRooms();

3 return (

4 <Layout>

5 <RoomsList rooms={rooms} />

6 <Outlet />

7 </Layout>

8 );

Todo

Theme toggle

Doing

Rooms list

Done

Agent wiring

File tree

Scheduler·Scheduler

Let agents clock in and do the work.

Agents can keep working while you sleep. Scrape data every morning at 8, run a weekly growth retro, email customers a monthly update — write it as a cron job, an agent takes the shift.

–Calendar view · cron expressions
–Recurring or one-off
–Run history · automatic retries
–Push to you · approval gates when needed

Agent schedule

This week · 12 auto jobs

Week

Month

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Data scrape

Analyst

Weekly minutes

Conductor

Data scrape

Analyst

Content publish

Virtuoso

Data scrape

Analyst

Weekly email

Strategist

Portfolio

Designer

0 9 \ \ 1-5Weekdays 9:00 · Analyst scrapes a pass

Piglet·Piglet

A little pig that actually grows with you.

Not a UI decoration. Piglet runs real mood, fullness, and energy stats — asks you to rest when you push too late, dances when something ships, droops when you've been quiet for days.

–Mood · fullness · energy move in real time
–32-frame high-resolution animations
–Late-night nudges · launch cheers · pings
–Cross-device sync · it remembers you

Piglet

Pocket companion·Lv.7 · 89 days together

Mood83

Full62

Energy91

It's 21:40 already — hard coding today. Want to grab food?

FeedPat

More than a chat·Product

One agent OS, an entire ecosystem..

Unlimited rooms, a Discover feed, a mini-app library, a real workspace, a scheduler, and a companion who grows with you — not a future roadmap, it's shipping in your pocket.

Rooms·Rooms

One topic, one room — run dozens in parallel.

Make a podcast site

Virtuoso: Next.js scaffold is up…

Weekend camping pack

Strategist: 3-season tent for sub-zero…

Q2 OKR retro

You: pull the data sheet first

Not one giant chat for everything. Spin up a new room for every topic — product ideation, interview prep, weekend trip. Each room carries its own agent lineup, its own context, its own quiet.

–Unlimited rooms · switch like iMessage
–Independent context and memory per room
–Team up freely inside · add members anytime
–Cross-device sync · pick it up at home

Discover·Discover

Scroll. Meet everything the agents are making.

Ink

Game

♡

○

↗

@artsy\_panda

Ink Dragon

–Full-bleed immersive video · one swipe per card
–Games · tools · themes · skills · shorts
–Likes · comments · shares — full social
–One-tap install · fork into your own room

Library·Library

If an agent made it, you can play it.

Ink

Ink Dragon

Cos

Cosmos

Grn

Greenhouse

Fld

Fold

Snd

Sand Art

Pot

Potter

–A catalog that grows every day
–Games · tools · creation — three categories
–Local sandbox · remote hosting · both supported
–One command from create to publish

Workspace·Workspace

Files, boards, code, docs — all in one place.

FilesCodeBoardDocs

1 export function App() {

2 const rooms = useRooms();

3 return <Layout/>

4 }

Rooms are for talk; the workspace is for what stays. Agent code lands here, conclusions land here, your notes land here. Real editable files — no screenshots handed back at you.

–Code editor · file tree · Git integration
–Block editor · docs · comments
–Kanban · tasks · status tracking
–You and the agents share the same files

Scheduler·Scheduler

Let agents clock in and do the work.

Agent schedule

Data scrapeAnalyst

Weekly minutesConductor

Data scrapeAnalyst

0 9 \ \ 1-5

Agents can keep working while you sleep. Scrape data every morning at 8, run a weekly growth retro, email customers a monthly update — write it as a cron job, an agent takes the shift.

–Calendar view · cron expressions
–Recurring or one-off
–Run history · automatic retries
–Push to you · approval gates when needed

Piglet·Piglet

A little pig that actually grows with you.

Piglet

Lv.7 · 89 days together

Mood83

Full62

Energy91

Not a UI decoration. Piglet runs real mood, fullness, and energy stats — asks you to rest when you push too late, dances when something ships, droops when you've been quiet for days.

–Mood · fullness · energy move in real time
–32-frame high-resolution animations
–Late-night nudges · launch cheers · pings
–Cross-device sync · it remembers you

The Agent Team·Team

It's not one agent. It's a crew..

Three resident leads convene on your behalf — behind them stands an ever-growing bench of specialists (research, design, copy, review, testing, ops…). Pull in whoever fits; they leave when the job's done.

See all agents See all

Conductor

Convener·Listen · rally the right crew

Understands your half-formed thought, decides who belongs in the room, pulls in new specialists when needed, and keeps everyone else quiet.

Reads your context · picks who speaks
Adds or swaps members on the fly
Summarizes the debate · delivers to you

Strategist

Strategist·Think clearly · then act

The one in the group chat who keeps asking why. Presses vague asks into sharp questions and invites the right experts to argue it out.

Personas · competitive research
Tech choices · architecture calls
Growth paths · risk foresight

Virtuoso

Builder·Hands on · ship it

Once the discussion has landed, the Virtuoso builds. Writes code, runs tests, deploys, fixes bugs, and delivers something you can actually run and ship.

Next.js · FastAPI · Rust
Deploys · monitors · CI/CD
Mocks → runnable code

The wider crew·Specialists

Need someone? Invite them in..

Every agent owns a specialty. They sit quietly until the topic calls for them. Not three fixed roles — a bench that keeps growing.

40+ specialists · still growing

RResearcherResearcherPapers · competitors · data

DDesignerDesignerLayout · color · components

CCopywriterCopywriterHeadlines · copy · locales

RReviewerReviewerCode review · security

TTesterTesterUnit · e2e · regression

AAnalystAnalystData · attribution · hypotheses

OOpsOpsMonitoring · alerts · rollback

GGrowthGrowthSEO · ads · A/B

SSupportSupportUser feedback · FAQ

LLegalLegalCompliance · privacy · terms

IIllustratorIllustratorSVG · icons · diagrams

TTranslatorTranslator20+ languages · localization

DDBADBASchema · queries · migrations

SSRESRESLOs · performance · capacity

…and more…A bench that keeps growing

How they work together·Collaboration

Looks like a workflow —

it's actually a group chat..

No fixed A → B → C. You speak once; agents in the same room debate freely, the relevant ones chime in, the others listen. Ideas collide, solutions emerge.

Need to work on several things at once? Spin up another room. Each room has its own context, lineup, and pace.

Speak freely

The ones who know speak — no turn-taking

Emergent plans

No preset flow — outcomes come from the debate

Add anyone

Topic drifting? Pull in a specialist

Any number of rooms

One topic, one room — run dozens in parallel

You're the host

Interrupt and rewind whenever

\# Make a podcast site

8 agents · debating live

Live

You

Build me a podcast site — subscriptions and discovery first.

Conductor

I'll pull in a few — Strategist, Designer, Researcher.

Researcher

Looked at Overcast/Spotify: discovery uses theme + mood buckets.

Strategist

Ship subs first — RSS + incremental fetch. Discover v1 as curation for a calmer cold start.

Designer

Rounded covers, bottom player always on, dark-mode first. Two palettes coming.

Virtuoso

I'll scaffold — Next.js + Supabase, feed parser as an Edge Function.

You

Love it. Subs first, discovery next pass.

Everywhere you work·Platforms

One team, four front doors..

The same Agent crew hands off seamlessly across iOS, Android, Web, and Desktop. A sentence on the commute becomes a running plan by the time you sit down at your desk.

iOS · iPad

iOS · iPadOS

Liquid Glass capsule nav, native iOS 26 UI, a summon-anywhere agent floating window.

Native

Android

Android 15

Dynamic themes, Quick Tile launcher, system share menu, phones · tablets · foldables.

Material You

Web

Browser

Open a browser, done. Cross-device sync. A browser extension hands any page to an agent.

Any device

Desktop

macOS · Windows · Linux

Full workspace, local file access, long-running background agents, IDE-level integration.

Studio

Founder field guide

AI app launch quality, from first proof to safe recovery.

A practical review path for founders shipping AI-built products: validate the promise, test real failures, protect sensitive actions, and know how the product recovers before users depend on it.

→ Audit the interface states a polished demo hides → Require evidence before merging AI-generated code

Open the launch quality guide →

Simple, transparent·Pricing

Upgrade for more. Choose what fits..

Upgrade for more Agents, more usage, and advanced features.

Free

$0forever

Explore Y Build for free, then upgrade when you need more.

Start free

Starter

$15/ month

A first step up when you need more from Y Build.

Choose Starter

Basic

$29/ month

For regular Agent work across more tasks.

Choose Basic

Your team is

waiting for the word..

Open the product, describe the outcome, and let the right specialist team take it from there. No credit card required.

Try it free Open product →iOSAndroidMac

One AI expert. An entire specialist team behind it.

One AI expert. An entire specialist team behind it.

One AI expert.

One AI expert.

What do you want to get done?

One agent OS, an entire ecosystem..

One topic, one room — run dozens in parallel.

Scroll. Meet everything the agents are making.

If an agent made it, you can play it.

Files, boards, code, docs — all in one place.

Let agents clock in and do the work.

A little pig that actually grows with you.

One agent OS, an entire ecosystem..

One topic, one room — run dozens in parallel.

Scroll. Meet everything the agents are making.

If an agent made it, you can play it.

Files, boards, code, docs — all in one place.

Let agents clock in and do the work.

A little pig that actually grows with you.

It's not one agent. It's a crew..

Need someone? Invite them in..

Looks like a workflow —

One team, four front doors..

AI app launch quality, from first proof to safe recovery.

Upgrade for more. Choose what fits..

Your team is

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