The missing design vocabulary for agents.

Impeccable strips the slop from AI-generated interfaces, gives you precise commands to steer, and iterates visual variants live in your product. Then the dice: pushed out of distribution, your model designs ambitious visual worlds it could never reach alone.

Before
After
Version 4 is here.A leaner core, tuned on frontier models like Fable and GPT-5.6-Sol. Four visitor modes. Pages that commit.What changed

It fucking works beautifully. It's so cool.

Ben Davis@davis7

Impeccable > Claude design

ImageMertcan Yüzer@MertcanDYuzer

Uninstall whatever frontend skill you're using. Replace it with Impeccable.

ImageAdrien Ninet@adrien_ninet

Impeccable is the most slept on tool for incorporating design thinking into coding workflows.

ImageAnish Acharya@illscience

When anyone asks me about design for frontend I always recommend @impeccable_ai plugin. I'm very picky with design and it's become part of my everyday stack.

ImageCathryn Lavery@cathrynlavery

This is probably what Figma Make should be.

ImageIan Andrews@IanAndrewsDC

Impeccable is hands down the best UI design skill out there. I use it daily and recommend it to others as well. Great work! 💪

ImageCarl Rannaberg@carlrannaberg

It has taken my ability to ship complex and beautiful designs to another level.

ImageBowTiedGroundHog@BowTiedGroundHo

Impeccable is the best skill I've used this year. Can't believe it's free.

ImageIvan Leo@ivanleomk

Impeccable is so so good. I love it.

ImageWatson Cyrus Anikwai@wanikwai

I will fight anyone who say anything bad against impeccable, just let me know who they are.

ImageFaizan Khan@faizan10114

I've tried and used many UI design tools that enhance AI aesthetics, and this one is the best and most stunning I've ever used.

ImageHickerzed@Hicker_Moledao

Jorks ur shit crazy style

ImageTony Ge@largePrawn

@impeccable_ai is really good and is the first time I really felt a 10x productivity boost with AI. And I make an effort to try as many tools as possible.

ImageThomas Karatzas@karatzas_thomas

TIL you are the guy behind Impeccable. I owe like 3 customer conversions to you. Thank you for such an amazing tool.

ImageFaizan Khan@faizan10114

Shipped a landing page in 2 hours using @conductor_build & @impeccable_ai. From idea to prod faster than most people pick a font ;))

ImageMikita@MikitaHQ

It fucking works beautifully. It's so cool.

Ben Davis@davis7

Impeccable > Claude design

ImageMertcan Yüzer@MertcanDYuzer

Uninstall whatever frontend skill you're using. Replace it with Impeccable.

ImageAdrien Ninet@adrien_ninet

Impeccable is the most slept on tool for incorporating design thinking into coding workflows.

ImageAnish Acharya@illscience

When anyone asks me about design for frontend I always recommend @impeccable_ai plugin. I'm very picky with design and it's become part of my everyday stack.

ImageCathryn Lavery@cathrynlavery

This is probably what Figma Make should be.

ImageIan Andrews@IanAndrewsDC

Impeccable is hands down the best UI design skill out there. I use it daily and recommend it to others as well. Great work! 💪

ImageCarl Rannaberg@carlrannaberg

It has taken my ability to ship complex and beautiful designs to another level.

ImageBowTiedGroundHog@BowTiedGroundHo

Impeccable is the best skill I've used this year. Can't believe it's free.

ImageIvan Leo@ivanleomk

Impeccable is so so good. I love it.

ImageWatson Cyrus Anikwai@wanikwai

I will fight anyone who say anything bad against impeccable, just let me know who they are.

ImageFaizan Khan@faizan10114

I've tried and used many UI design tools that enhance AI aesthetics, and this one is the best and most stunning I've ever used.

ImageHickerzed@Hicker_Moledao

Jorks ur shit crazy style

ImageTony Ge@largePrawn

@impeccable_ai is really good and is the first time I really felt a 10x productivity boost with AI. And I make an effort to try as many tools as possible.

ImageThomas Karatzas@karatzas_thomas

TIL you are the guy behind Impeccable. I owe like 3 customer conversions to you. Thank you for such an amazing tool.

ImageFaizan Khan@faizan10114

Shipped a landing page in 2 hours using @conductor_build & @impeccable_ai. From idea to prod faster than most people pick a font ;))

ImageMikita@MikitaHQ

THIS. This shit works.

ImageServando@vandotorres

This is the best plugin ever created imo.

ImageVishveshwar Jatain@eclecticV

Claude skills are mostly BS. These ones are the rare, truly useful ones.

ImageNik@nik_ska

How is this free?? 🔥🔥

ImageZohaib A.@HeyZohaib

It's crazy that @impeccable_ai is free. It replaces some paid products while being better than them.

ImageSankalp Mukim@IceCreamChai

@impeccable_ai has been a huge help at all levels from prototyping to production. It has really upped our game. I can't see anything out-of-the-box like this replacing it.

ImageMichael Hedgpeth@michaelhedgpeth

Impeccable is the best frontend design skill I've used rn. It clears the alternatives by a mile.

Imagemartta_xu@littlemartta

This is incredible. Developer and Designer workflows are changing so quickly and for the better.

ImagePaul Kinlan@Paul_Kinlan

Recently used this skill for my personal portfolio and was blown away. Iterated multiple times on Claude code and hardly touched Figma.

ImageJashan Gupta@JASHANGUPTA15

This is 🔥. My landing page looked 100% vibe coded. I think it looks very decent now. I had fun in the process.

ImageSidney Hori Hawthorne@sid_hori

I'm glad that we never need to touch Figma again. Just run 8 agents using @paper w/ Impeccable's Claude skills.

Imagebillzh@billzh

Impeccable is such a great skill. I use it multiple times a day every day and it makes a huge difference.

ImageJohn Ennis@johnennis

Upgraded an internal tool with better UI, UX, branding and reduced AI slop. This established a standard for the project itself.

ImageSomesh@devsome_sh

It's so good.

ImageAlejandro Reyes@alejandroreyes

This is the only set of agent skills I ever found use in. Thanks for making this.

ImageEmre Coklar@EmreCoklar

THIS. This shit works.

ImageServando@vandotorres

This is the best plugin ever created imo.

ImageVishveshwar Jatain@eclecticV

Claude skills are mostly BS. These ones are the rare, truly useful ones.

ImageNik@nik_ska

How is this free?? 🔥🔥

ImageZohaib A.@HeyZohaib

It's crazy that @impeccable_ai is free. It replaces some paid products while being better than them.

ImageSankalp Mukim@IceCreamChai

@impeccable_ai has been a huge help at all levels from prototyping to production. It has really upped our game. I can't see anything out-of-the-box like this replacing it.

ImageMichael Hedgpeth@michaelhedgpeth

Impeccable is the best frontend design skill I've used rn. It clears the alternatives by a mile.

Imagemartta_xu@littlemartta

This is incredible. Developer and Designer workflows are changing so quickly and for the better.

ImagePaul Kinlan@Paul_Kinlan

Recently used this skill for my personal portfolio and was blown away. Iterated multiple times on Claude code and hardly touched Figma.

ImageJashan Gupta@JASHANGUPTA15

This is 🔥. My landing page looked 100% vibe coded. I think it looks very decent now. I had fun in the process.

ImageSidney Hori Hawthorne@sid_hori

I'm glad that we never need to touch Figma again. Just run 8 agents using @paper w/ Impeccable's Claude skills.

Imagebillzh@billzh

Impeccable is such a great skill. I use it multiple times a day every day and it makes a huge difference.

ImageJohn Ennis@johnennis

Upgraded an internal tool with better UI, UX, branding and reduced AI slop. This established a standard for the project itself.

ImageSomesh@devsome_sh

It's so good.

ImageAlejandro Reyes@alejandroreyes

This is the only set of agent skills I ever found use in. Thanks for making this.

ImageEmre Coklar@EmreCoklar

Detects and removes AI slop.

58 checks catch the defaults agents keep reaching for before they become your design.

Explore all 58

The Language

23 commands give you a shared design vocabulary with your AI. Each names one kind of intervention: /typeset for type, /distill for complexity, /audit for production quality. Pick any to see it in action, or browse the full reference →

Give direction in chat. Refine the result on the page.

Every change lands in your source.

main Claudex Cocursor
Agent threadWorking tree
You

/impeccable polish the pricing page. Keep our sharp corners and sober palette. Remove the AI tells.

Agent

I’ll polish the page within its existing design system, then run the detector before I hand it back.

DESIGN.md loadedExisting system preserved

4 tells foundAI beige · italic serif · side-tab · pulsing dot

Written to source0 detector findings

You

/impeccable live

Agent

Starting Live Mode against the running app. I’ll open the page, then wait for element picks and page-level steering.

Live helper startedPicker injected into the app

localhost:3000 openedProduction source connected

Waiting for inputPick an element or steer the whole page

/impeccableChoose a command
BrowserLive preview
localhost:3000
Generating variants…
1 / 3
Variant 3 written to source
Steer

Worlds on the table

Ask a model to be creative and it builds its favorite idea, every run. So Impeccable deals challengers: human-reviewed worlds, each a complete graphic system with laws of its own. They compete against the ideas the model derives from your product, and the direction that wins takes the build, fully committed. The hand below is dealt live from the 177 highest-rated worlds in the deck by the same roll API the skill uses.Why dice? Read the research →

Psst… the deck grows every week in Pro →

Ready to drop in

01

Respects your design system.

Inherits your tokens, components, and conventions instead of overwriting them. New work fits the system, not the model's defaults.

/impeccable polish : scanning codebase
Walking src/…
src/styles/tokens.css  14 colors, 6 font sizes, 7 spacing steps
tailwind.config.ts  theme.extend merged
src/components/  34 components
    · Button: primary, secondary, ghost, destructive
    · Card: 3 variants, 8px / 16px radii
    · Input, Select, Dialog, Toast, Table…
DESIGN.md  brand rules loaded
Matching your system. Not inventing one.
02

Real product context.

Captures the brief once, in PRODUCT.md. Every command reads it before designing.

PRODUCT.mdLoaded on every command
UsersSREs on call, reading fast, often in the dark.
ModeOperate. Design serves the task.
Brand voiceCalm, clinical, no hype.
Anti-referencesPurple gradients. Glassmorphism. "Boost your productivity."
03

Travels as DESIGN.md.

/impeccable document writes one in the Google Stitch format. Your visual system becomes portable.

DESIGN.mdGoogle Stitch spec
Primaryoklch(78% .12 82)
WordmarkSpaced 400
IM
Avenir Next
BodyRegular 400
Aa
Avenir Next
Components34
PrimaryGhost
Email address
Readable by every DESIGN.md-aware tool.
04

Knows what the surface is for.

A landing page should persuade. A dashboard should help someone work. Impeccable names the mode before it designs.

PersuadeWin attention
OperateComplete a task
ReadBuild understanding
ExperienceLet the work lead
05

Block slop before it ships.

Hooks inspect each UI edit and send findings straight back to the agent. The same detector can fail a PR.

Edit · Hero.tsxhook active
1Edit landsAgent updates the hero.
2Hook returns two findingsAI beige · clipped label
Agent corrects the fileSecond pass: clean
Deep stop audit0 findings · PR ready

Explore the detector lab →

Get started

Install via

On the GitHub Copilot app? Impeccable is built in. Skip the install and enable it under Settings → Experimental.

npx impeccable install

Installs the build tailored to your harness and model. Requires Node 22.12+.

Why one command, many builds
impeccableClaude Codehooks + subagentCursorpre-edit hookGemini CLI+ Gemini-tuned slop rulesCodex CLI+ Codex-tuned slop rules

Same skill, recompiled per target. The part that matters: builds for models with known tells carry extra slop rules banning that model's habits. The Gemini build kills its image-on-hover motion; the Codex build refuses ghost-cards and over-rounding. Native hook wiring and a subagent ship too, where the tool supports them.

First run
/impeccable init
Update
npx impeccable update

Works with Cursor, Claude Code, GitHub Copilot, Gemini CLI, Codex CLI, Grok Build, and every other major AI coding harness.

Read the setup guide · See what's new · Got questions?

Learn more: Getting started · Designing with Impeccable · command docs