A set of methods for designing and improving frontend interfaces, including websites, dashboards, forms, settings, and app screens. It uses project context and a confirmed design brief before code changes are made.

Use it to design, redesign, critique, audit, clarify, polish, optimize, animate, or adapt frontend interfaces and their components.

It helps prevent interface work from becoming a generic visual makeover disconnected from the product. Required context and review steps make the intended shape and visual direction explicit before implementation.

How theexperiencecompany/gaia-ui configures Codex

Reuse

Borrowing it

Nothing to install: this file belongs to theexperiencecompany/gaia-ui. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/theexperiencecompany/gaia-ui/main/.agents/skills/impeccable/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/theexperiencecompany/gaia-ui

Made for: Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/theexperiencecompany/gaia-ui/impeccable/github.svg)](https://agentmods.dev/skills/theexperiencecompany/gaia-ui/impeccable)

Your own site

<a href="https://agentmods.dev/skills/theexperiencecompany/gaia-ui/impeccable"><img src="https://agentmods.dev/badge/skills/theexperiencecompany/gaia-ui/impeccable/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/theexperiencecompany/gaia-ui/impeccable"><img src="https://agentmods.dev/badge/skills/theexperiencecompany/gaia-ui/impeccable.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 189 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 3,220 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin 81% copy Near-identical to another mod in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00189	$0.03220
Opus 5	$0.00095	$0.01610
Sonnet 5	$0.00038	$0.00644
Haiku 4.5	$0.00019	$0.00322

Measured 11d ago against content hash e03437497832, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

impeccable scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.

The scan reads SKILL.md. This mod also ships 14 executable files (scripts/cleanup-deprecated.mjs, scripts/design-parser.mjs, scripts/detect-csp.mjs, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

81% identical to impeccable — 34 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.agents/skills/impeccable/SKILL.md · 176 lines

How it starts

The opening of the file, as written. The whole thing — 176 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Designs and iterates production-grade frontend interfaces. Real working code, committed design choices, exceptional craft.

Setup (non-optional)

Before any design work or file edits, pass these gates. Skipping them produces generic output that ignores the project.

Gate	Required check	If fail
Context	The PRODUCT.md / DESIGN.md loader result is known from `node .agents/skills/impeccable/scripts/load-context.mjs`.	Run the loader before continuing.
Product	PRODUCT.md exists and is not empty or placeholder (`[TODO]` markers, <200 chars).	Run `$impeccable teach`, refresh context, then resume. Never synthesize PRODUCT.md from the user's original prompt alone.
Command	The matching command reference is loaded when a sub-command is used.	Load the reference before continuing.
Craft	`$impeccable craft` has a user-confirmed shape brief for this task. `teach` / PRODUCT.md never counts as shape.	Run `$impeccable shape` and wait for explicit brief confirmation.
Image	Required visual probes / mocks are generated or skipped with a reason.	Resolve the image-generation gate in `shape.md` or `craft.md` before code.
Mutation	All active gates above pass.	Do not edit project files yet.

Codex-style agents must state this before editing files:

IMPECCABLE_PREFLIGHT: context=pass product=pass command_reference=pass shape=pass|not_required image_gate=pass|skipped:<reason> mutation=open

For $impeccable craft, shape=pass is only valid after a separate user response approving the shape design brief, or when the user provided an already-confirmed brief in the request. Do not mark shape=pass after writing PRODUCT.md, summarizing assumptions, or drafting an unconfirmed brief yourself.

Other harnesses should follow the same checklist when they can expose this state.

1. Context gathering

Two files, case-insensitive. The loader looks at the project root by default and falls back to .agents/context/ and docs/ if the root is clean. Override with IMPECCABLE_CONTEXT_DIR=path/to/dir (absolute or relative to cwd).

Read the full file on GitHub · 176 lines

Files

What ships with it

51 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

11d ago First seen · 176 lines · 189 tokens per session scan A e03437497832

Subscribe to this mod's changes

impeccable is a skill published in the GitHub repository theexperiencecompany/gaia-ui (219 stars, last pushed 7d ago), licensed MIT. It adds 189 tokens to every session and 3,220 once invoked, about $0.0009 per session on Opus 5. A static security scan graded it A with 0 findings. It is 81% identical to impeccable, differing in 34 lines, and is treated as a copy.

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gaia-ui: Skill for Codex