Best prototyping skills for Claude Code, Codex and other agents.

Builds single-file interactive HTML prototypes rendered with the real LobeHub UI components and written as production-style React, so they can later be split into files.

lobehub/lobehub

Maintains the Vuetify repo's local Playground.vue so contributors get a realistic reproduction and a short demo they can paste into a pull request description.

vuetifyjs/vuetify

A skill your agent uses when the user is designing, prototyping, or rewriting a desktop app that must run on multiple OSes (macOS + Windows, optionally Linux) AND feel indistinguishable from a…

yetone/native-feel-skill

Create videos from a text prompt using HeyGen's Video Agent.

calesthio/OpenMontage

Builds a throwaway prototype at just the fidelity needed to settle a specific how-it-should-work-or-feel question, before committing to an approach other work will treat as fixed.

EveryInc/compound-engineering-plugin

Delegates coding tasks to Codex CLI for prototyping, debugging, and code review.

GuDaStudio/collaborating-with-codex

Use the Claude Code CLI to consult Claude and delegate coding tasks for prototyping, debugging, and code review.

appautomaton/latex-arxiv-SKILL

Guided workflow for authorized penetration testing, vulnerability validation, security reporting, CTF/local sandbox reverse engineering, and user-directed vulnerability research.

lingbol088-spec/ReiPenFlow

Puts four real design variations of one project file on your localhost behind a small card you flip with the arrow keys, then acts on your verdict.

Nutlope/variate

Use with the dstack skill for model-serving work when the image, serving command, resources, backend/fleet choice, or service behavior is not proven.

dstackai/dstack

Create or redesign self-contained single-file HTML artifacts with a visual direction shaped by the user's brief, project, and subject.

plannotator/effective-html

Use the Gemini CLI to consult Gemini and delegate coding tasks for prototyping, debugging, and code review.

appautomaton/latex-arxiv-SKILL

Search DigiKey for electronic components and download datasheets — primary source for prototype orders and the preferred API method for fetching datasheets.

aklofas/kicad-happy

A skill your agent uses to generate well-branded interfaces and assets for fast-agent, either for production or throwaway prototypes/mocks/etc.

evalstate/fast-agent

Generates parametric, print-ready 3D models in Python and exports them as STL files sized to real connectors, devices and mounting hardware.

flowful-ai/cad-skill

Builds a website page by page with Stitch in an autonomous loop, passing a baton file from one iteration to the next that names the next page and prompt.

google-labs-code/stitch-skills

Delegates coding tasks to Gemini CLI for prototyping, debugging, and code review.

haoyu-haoyu/Multi-AI-Workflow

Builds a risk-matched whitebox or an approved production game candidate from a game design for its target runtime, with replayable evidence.

zenstory-ai/novel-to-game

Look up Spectrum 2 (S2) component documentation, design guidelines, and usage patterns when building with React Spectrum or Spectrum Web Components.

adobe/spectrum-design-data

A skill your agent uses to generate well-branded interfaces and assets for Baby Menu, either for production or throwaway prototypes/mocks/etc.

kunchenguid/baby-menu

Explores a feature idea through HTML mocks that match the project's existing UI, keeping every earlier version and logging each requested tweak in a context file.

imbue-ai/bouncer

Converts a working code prototype into a structured Figma file with one frame per interaction state, mapped to your design system and annotated with transitions.

alima-max/prototype-to-figma-skill

Direct-invocation specialist for polished, responsive, self-contained HTML mockups and interactive prototypes grounded in the user's conversation, product context, and design language.

plannotator/effective-html

Delegate tasks to Google's Antigravity CLI (agy) for prototyping, debugging, code review, and research.

appautomaton/agent-designer

Build a throwaway prototype to flesh out a design — a runnable terminal app for state/business-logic questions, or several radically different UI variations toggleable from one route.

fossasia/eventyay-interpretation

Self-contained app generator — invoke this skill directly, do not decompose into sub-steps.

popmechanic/VibesOS

Expert patterns for simplifying 3D games to 2D including dimension reduction strategies, 2.5D fake-depth, isometric ports, camera flattening, physics conversion, 3D-to-sprite art pipeline, and…

thedivergentai/GD-Agentic-Skills

Builds a clickable low-fidelity prototype of one flow from a product brief during discovery, with simulated data and browser checks, before detailed design.

open-mercato/skills

Delegate tasks to Claude Code CLI for prototyping, debugging, and code review.

appautomaton/agent-designer

Guides building Gradio web UIs and ML demos in Python, covering Interface, Blocks, ChatInterface, event listeners, layouts and chatbots.

huggingface/skills

Settles a feasibility question with the smallest throwaway build that could disprove it, in an isolated worktree, ending in a verdict backed by evidence instead of a PR.

Wirasm/prp

Builds a single-file HTML explorer with visual controls, a live preview and a copyable prompt, using one of six templates chosen to fit the topic.

anthropics/claude-plugins-official

Applies the reasoning, principles, and frameworks of Andrew Ng (machine learning pioneer, co-founder of Coursera and DeepLearning.AI, Stanford University, and former Google Brain lead).

K-Dense-AI/mimeo

Delegate tasks to Codex CLI for prototyping, debugging, code review, implementation handoff, cross-model second opinions, and multi-turn Codex sessions via SESSIONID.

appautomaton/agent-designer

Activate this skill when authoring DataJunction (DJ) nodes via the REST API directly (curl, HTTP clients) — typically for exploration, ad-hoc prototyping, or namespaces that aren't repo-backed.

DataJunction/dj

A skill your agent uses to generate well-branded interfaces and assets for Honeycomb (shared AI agent memory, a Legion Code × Activeloop product), either for production or throwaway…

legioncodeinc/honeycomb

Asks one clarifying question at a time, then builds two or three single-file HTML prototypes checked across phone, tablet, and desktop widths.

huiliyi37/Tianshu-harness

Framework for building LLM-powered applications with agents, chains, and RAG.

Orchestra-Research/AI-Research-SKILLs

Settles a feasibility or fit question by building the smallest throwaway artifact that could prove it wrong, in an isolated worktree, ending in a PROVEN, DISPROVEN or CONDITIONAL verdict.

Wirasm/prp

Run a structured 5-day process to prototype, test, and validate product ideas with real users.

wondelai/skills

Collaboratively write a feature spec with the developer. An agent skill from bartstc/vite-ts-react-template.

bartstc/vite-ts-react-template

A skill your agent uses to generate well-branded interfaces and assets for beava (beava.dev, an open-source single-binary feature server for stream processing), either for production or throwaway…

beava-dev/beava

Idea to AI-generated prototype to customer validation to engineering handoff.

borghei/Claude-Skills

Delegate tasks to Grok CLI (xAI) for prototyping, debugging, code review, research, and cross-model second opinions.

appautomaton/agent-designer

A skill your agent uses to generate well-branded interfaces and assets for nxv (Nix Version Index) — either for production or throwaway prototypes/mocks.

utensils/nxv

Provision instant temporary Postgres databases via Claimable Postgres by Neon (pg.new).

henryalouf/ruflow

Help users build functional product prototypes from natural language or visual mocks using AI coding tools.

RefoundAI/lenny-skills

Settles stalled design questions by building a throwaway artifact: either a pure logic module in a clickable shell, or three structurally different UI variants.

Yeachan-Heo/oh-my-claudecode