LazyCodex is an agent harness for working on complex codebases, combining project memory, planning, execution, and completion checks inside Codex. It is for developers who want structured, repeatable assistance when handling substantial software projects. The catalogue contains the skills, hook, and MCP integration that provide its workflow inside Codex.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add code-yeongyu/lazycodex --skill frontendgit clone --depth 1 https://github.com/code-yeongyu/lazycodexWrote 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.
[](https://agentmods.dev/skills/code-yeongyu/lazycodex/frontend)<a href="https://agentmods.dev/skills/code-yeongyu/lazycodex/frontend"><img src="https://agentmods.dev/badge/skills/code-yeongyu/lazycodex/frontend/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.
<a href="https://agentmods.dev/skills/code-yeongyu/lazycodex/frontend"><img src="https://agentmods.dev/badge/skills/code-yeongyu/lazycodex/frontend.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00049 | $0.05014 |
| Opus 5.5 | $0.00020 | $0.02006 |
| Sonnet 5.5 | $0.00010 | $0.01003 |
| Haiku 4.5 | $0.00005 | $0.00501 |
Grade A, and why
frontend scanned grade A with 1 finding 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 9d ago.
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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
| Interaction or motion work — micro-interactions, animated components, transitions, gestures, hover/press/state feedback, "make it feel alive" | ALSO `references/design/interaction-skill.md`. The beui.dev catalog is the How it starts
The opening of the file, as written. The whole thing — 157 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Frontend
This file is a router, not a rulebook. The rules live in four rulesets under references/, and reading them is the work, not the preamble to it. Before touching any file, name the references the request routes to and the one reason each is needed, then read exactly those. Declaring the set first is what makes the choice reviewable: a reference you never named is one you decided to skip, and a reference you named but never opened is a gap you still owe. Freestyling past the routed set produces the generic AI-slop output this skill exists to prevent.
The bar is not clean-and-correct — it is work a senior designer at Linear, Stripe, or Supabase would ship. Correct-but-flat is a failure, not a finish. Protect the surface as hard as you protect the build: design is a first-class deliverable, not a one-shot decision you lock and walk away from.
Phase 0 — Route (before any UI work)
| Request involves… | Read |
|---|---|
| ANY UI implementation, styling, redesign, mockup, or visual decision | references/design/README.md FIRST. It enforces two mandatory gates — the Design System Gate (a DESIGN.md must exist before any component is written) and the React Dev Tooling Gate (react-grab / react-scan / react-doctor installed by default) — then routes to the taste and brand references below. |
| Spatial structure — app shells, scroll ownership, "what goes where", "this layout breaks at X" | ALSO references/design/layout-skill.md for the mechanics, then references/design/stylegallery.md to fetch a named pattern contract for that exact spatial problem. Both stack on the style skill and add no visual direction. |
| Paged output — a PDF report, a print stylesheet, a headless-Chrome print pipeline, an HTML deck printed to paper, or any "why is this page half empty" break defect | ALSO references/design/print-paged-media.md for the page box, the fragmentation properties, the atomic-block set, and the keep-together side effect that strands a block on a near-empty page. It adds no visual direction and stacks on the routed style skill. |
| Interaction or motion work — micro-interactions, animated components, transitions, gestures, hover/press/state feedback, "make it feel alive" | ALSO references/design/interaction-skill.md. The beui.dev catalog is the mandatory interaction reference: find the nearest pattern, read its real source through the file's curl recipe, and adapt the mechanism to DESIGN.md motion tokens. It stacks on the routed style skill — never replaces it. |
| Hero atmosphere or ambience — an animated, shader, particle, or grid background; a typographic reveal (split, blur, shimmer, typewriter, count-up, marquee); scroll storytelling; spotlight / tilt / glare / glowing-border card surfaces; "make the hero stunning", "add a living background", "animate the headline" | ALSO references/design/ambience-skill.md. The react-bits catalog is the mandatory ambience reference: find the nearest pattern in its intent map, read its real source through the file's curl recipe, extract the mechanism, and run its retrofit checklist (reduced motion, off-screen pause, compositor-only, tokens, budget) before shipping. It stacks on the routed style skill — never replaces it, and never vendors react-bits code. |
| The brief's tone or surface falls outside both anchors — AI-agent UI, charts, landing sections, a brutalist or Tailwind-only build — or an anchor has no nearest pattern | ALSO references/design/component-catalogs.md: which catalog to read for that tone, the exploration procedure, and the licence and terms gate for every other catalog. |
| Writing or modifying frontend code, OR auditing performance / SEO / accessibility / quality | ALSO references/perfection/README.md. Lighthouse 100 in every category, measured on real Playwright Chromium (never the lighthouse CLI), achieved through architecture — never by dropping animations or hiding content. |
| Looking up a concrete style, palette, font pairing, chart type, landing structure, or UX guideline — or generating a design system from keywords | references/ui-ux-db/README.md. A searchable CSV database with a CLI: a lookup tool, not a posture. design stays the source of truth for taste and the DESIGN.md contract. |
ANY implementation or redesign that creates or updates DESIGN.md — plus explicit operating-layer asks (personas, critique, debt, handoff, synthetic user testing) |
references/designpowers/README.md + lane-c-review.md. lane-c is the Phase Final flatness/critique reviewer and fills the accessibility-constraint and accepted-debt sections DESIGN.md requires. Load other lanes only when their phase applies. |
What ships with it
60 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.
- agents/openai.yaml 43 B
- ATTRIBUTION.md 14 KB
- LICENSE-Apache-2.0.txt 11 KB
- references/design/_INDEX.md 17 KB
- references/design/airbnb.md 29 KB
- references/design/airtable.md 3.6 KB
- references/design/ambience-skill.md 18 KB
- references/design/apple.md 17 KB
- references/design/aside.md 13 KB
- references/design/binance.md 18 KB
- references/design/bmw.md 9.7 KB
- references/design/brutalist-skill.md 8.3 KB
- references/design/bugatti.md 26 KB
- references/design/cal.md 17 KB
- references/design/claude.md 20 KB
- references/design/clay.md 17 KB
- references/design/clickhouse.md 15 KB
- references/design/clone-from-url.md 5.3 KB
- references/design/cohere.md 15 KB
- references/design/coinbase.md 5.0 KB
- references/design/component-catalogs.md 8.6 KB
- references/design/composio.md 21 KB
- references/design/cursor.md 19 KB
- references/design/design-system-architecture.md 14 KB
- references/design/elevenlabs.md 15 KB
- references/design/expo.md 18 KB
- references/design/ferrari.md 25 KB
- references/design/figma.md 11 KB
- references/design/framer.md 17 KB
- references/design/gpt-tasteskill.md 7.7 KB
- references/design/hashicorp.md 15 KB
- references/design/ibm.md 19 KB
- references/design/image-to-code-skill.md 36 KB
- references/design/imagegen-brandkit.md 16 KB
- references/design/imagegen-frontend-mobile.md 39 KB
- references/design/imagegen-frontend-web.md 36 KB
- references/design/interaction-skill.md 16 KB
- references/design/intercom.md 6.4 KB
- references/design/kraken.md 4.3 KB
- references/design/lamborghini.md 21 KB
- references/design/layout-skill.md 8.3 KB
- references/design/lazyweb.md 3.8 KB
- references/design/linear.app.md 22 KB
- references/design/lovable.md 17 KB
- references/design/mastercard.md 26 KB
- references/design/meta.md 20 KB
- references/design/minimalist-skill.md 7.7 KB
- references/design/minimax.md 14 KB
- references/design/mintlify.md 17 KB
- references/design/miro.md 4.8 KB
- references/design/mistral.ai.md 15 KB
- references/design/mongodb.md 15 KB
- references/design/nike.md 20 KB
- references/design/notion.md 18 KB
- references/design/nvidia.md 17 KB
- references/design/ollama.md 15 KB
- references/design/opencode.ai.md 15 KB
- references/design/output-skill.md 2.5 KB
- references/design/pinterest.md 12 KB
- references/design/playstation.md 28 KB
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.
- 9d ago Changed · +1 lines 74c493731809
- 11d ago Changed c026be20e773
- 22d ago Changed f5c207e2ec5b
- 24d ago Changed · +1 lines 129a45a52d72
- 1mo ago Changed b870f18de9a6
- 1mo ago Changed · +7 lines · -134 tokens per session 82d4715eb560
- 1mo ago First seen · 148 lines · 183 tokens per session scan A cb3a0ca65af2
frontend is a skill published in the GitHub repository code-yeongyu/lazycodex (3,782 stars, last pushed 3d ago), licensed MIT. It adds 49 tokens to every session and 5,014 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other skills, from other repositories
get-context
Mandatory design-brief gate for clarifying the product and outcome. Use before ideation, image-to-code builds, redesigns, or product UI work to clarify missing product information and play back the brief before proceeding.
deck-graphify-dark
A dark slide-deck template for AI tools, developer tools, and knowledge graphs, using gradients, floating blurred shapes, graph diagrams, code styling, and glass-like cards.
cli-anything-photoshop
A command-line tool that controls Adobe Photoshop through Windows automation. It can work with Photoshop documents, layers, selections, text, image adjustments, and exports.
designlang-tokens
Use when styling UI for cal.com — references the extracted design system tokens instead of inventing colors, spacing, or typography.
omd-apply
A skill that applies a project's DESIGN.md file as visual and brand guidance for interface work. It covers components, colors, fonts, layout, copy, motion, and visual assets.
user-research-cookiy
End-to-end user research assistant — qualitative and quantitative. Use this skill whenever the user mentions user research, user interviews, discussion guides, interview guides, research plans, qualitative research, quantitative research, user surveys, survey design, usability studies, participant recruitment…