Open Design

The open-source alternative to Claude Design. Local-first, web-deployable, BYOK at every layer — 11 coding-agent CLIs auto-detected on your PATH (Claude Code, Codex, Cursor Agent, Gemini CLI, OpenCode, Qwen, GitHub Copilot CLI, Hermes, Kimi, Pi, Kiro) become the design engine, driven by 31 composable Skills and 72 brand-grade Design Systems. No CLI? An OpenAI-compatible BYOK proxy is the same loop minus the spawn.

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Why this exists

Anthropic's Claude Design (released 2026-04-17, Opus 4.7) showed what happens when an LLM stops writing prose and starts shipping design artifacts. It went viral — and stayed closed-source, paid-only, cloud-only, locked to Anthropic's model and Anthropic's skills. There is no checkout, no self-host, no Vercel deploy, no swap-in-your-own-agent.

Open Design (OD) is the open-source alternative. Same loop, same artifact-first mental model, none of the lock-in. We don't ship an agent — the strongest coding agents already live on your laptop. We wire them into a skill-driven design workflow that runs locally with pnpm tools-dev, can deploy the web layer to Vercel, and stays BYOK at every layer.

Type make me a magazine-style pitch deck for our seed round. The interactive question form pops up before the model improvises a single pixel. The agent picks one of five curated visual directions. A live TodoWrite plan streams into the UI. The daemon builds a real on-disk project folder with a seed template, layout library, and self-check checklist. The agent reads them — pre-flight enforced — runs a five-dimensional critique against its own output, and emits a single <artifact> that renders in a sandboxed iframe seconds later.

That's not "AI tries to design something". That's an AI that has been trained, by the prompt stack, to behave like a senior designer with a working filesystem, a deterministic palette library, and a checklist culture — exactly the bar Claude Design set, but open and yours.

OD stands on four open-source shoulders:

• alchaincyf/huashu-design — the design-philosophy compass. Junior-Designer workflow, the 5-step brand-asset protocol, the anti-AI-slop checklist, the 5-dimensional self-critique, and the "5 schools × 20 design philosophies" idea behind our direction picker — all distilled into apps/web/src/prompts/discovery.ts.
• op7418/guizang-ppt-skill — the deck mode. Bundled verbatim under skills/guizang-ppt/ with original LICENSE preserved; magazine-style layouts, WebGL hero, P0/P1/P2 checklists.
• OpenCoworkAI/open-codesign — the UX north star and our closest peer. The first open-source Claude-Design alternative. We borrow its streaming-artifact loop, its sandboxed-iframe preview pattern (vendored React 18 + Babel), its live agent panel (todos + tool calls + interruptible generation), and its five-format export list (HTML / PDF / PPTX / ZIP / Markdown). We deliberately diverge on form factor — they are a desktop Electron app bundling pi-ai; we are a web app + local daemon that delegates to your existing CLI.
• multica-ai/multica — the daemon-and-runtime architecture. PATH-scan agent detection, the local daemon as the only privileged process, the agent-as-teammate worldview.

At a glance

	What you get
Coding-agent CLIs (11)	Claude Code · Codex CLI · Cursor Agent · Gemini CLI · OpenCode · Qwen Code · GitHub Copilot CLI · Hermes (ACP) · Kimi CLI (ACP) · Pi (RPC) · Kiro CLI (ACP) — auto-detected on PATH, swap with one click
BYOK fallback	OpenAI-compatible proxy at /api/proxy/stream — paste baseUrl + apiKey + model and any vendor (Anthropic-via-OpenAI, DeepSeek, Groq, MiMo, OpenRouter, your self-hosted vLLM, or any other OpenAI-compatible provider) becomes the engine. Internal-IP/SSRF blocked at the daemon edge.
Design systems built-in	129 — 2 hand-authored starters + 70 product systems (Linear, Stripe, Vercel, Airbnb, Tesla, Notion, Anthropic, Apple, Cursor, Supabase, Figma, Xiaohongshu, …) from awesome-design-md, plus 57 design skills from awesome-design-skills added directly under design-systems/
Skills built-in	31 — 27 in prototype mode (web-prototype, saas-landing, dashboard, mobile-app, gamified-app, social-carousel, magazine-poster, dating-web, sprite-animation, motion-frames, critique, tweaks, wireframe-sketch, pm-spec, eng-runbook, finance-report, hr-onboarding, invoice, kanban-board, team-okrs, …) + 4 in deck mode (guizang-ppt · simple-deck · replit-deck · weekly-update). Grouped in the picker by scenario: design / marketing / operation / engineering / product / finance / hr / sale / personal.
Media generation	Image · video · audio surfaces ship alongside the design loop. gpt-image-2 (Azure / OpenAI) for posters, avatars, infographics, illustrated maps · Seedance 2.0 (ByteDance) for cinematic 15s text-to-video and image-to-video · HyperFrames (heygen-com/hyperframes) for HTML→MP4 motion graphics (product reveals, kinetic typography, data charts, social overlays, logo outros). 93 ready-to-replicate prompts gallery — 43 gpt-image-2 + 39 Seedance + 11 HyperFrames — under prompt-templates/, with preview thumbnails and source attribution. Same chat surface as code; outputs a real .mp4 / .png chip into the project workspace.
Visual directions	5 curated schools (Editorial Monocle · Modern Minimal · Warm Soft · Tech Utility · Brutalist Experimental) — each ships a deterministic OKLch palette + font stack (apps/web/src/prompts/directions.ts)
Device frames	iPhone 15 Pro · Pixel · iPad Pro · MacBook · Browser Chrome — pixel-accurate, shared across skills under assets/frames/
Agent runtime	Local daemon spawns the CLI in your project folder — agent gets real Read, Write, Bash, WebFetch against a real on-disk environment, with Windows ENAMETOOLONG fallbacks (stdin / prompt-file) on every adapter
Imports	Drop a Claude Design export ZIP onto the welcome dialog — POST /api/import/claude-design parses it into a real project so your agent can keep editing where Anthropic left off
Persistence	SQLite at .od/app.sqlite: projects · conversations · messages · tabs · saved templates. Reopen tomorrow, todo card and open files are exactly where you left them.
Lifecycle	One entry point: pnpm tools-dev (start / stop / run / status / logs / inspect / check) — boots daemon + web (+ desktop) under typed sidecar stamps
Desktop	Optional Electron shell with sandboxed renderer + sidecar IPC (STATUS / EVAL / SCREENSHOT / CONSOLE / CLICK / SHUTDOWN) — drives tools-dev inspect desktop screenshot for E2E
Deployable to	Local (pnpm tools-dev) · Vercel web layer · packaged Electron (placeholder, in-flight)
License	Apache-2.0

Demo

Entry view — pick a skill, pick a design system, type the brief. The same surface for prototypes, decks, mobile apps, dashboards, and editorial pages.	Turn-1 discovery form — before the model writes a pixel, OD locks the brief: surface, audience, tone, brand context, scale. 30 seconds of radios beats 30 minutes of redirects.
Direction picker — when the user has no brand, the agent emits a second form with 5 curated directions (Monocle / Modern Minimal / Tech Utility / Brutalist / Soft Warm). One radio click → a deterministic palette + font stack, no model freestyle.	Live todo progress — the agent's plan streams as a live card. in_progress → completed updates land in real time. The user can redirect cheaply, mid-flight.
Sandboxed preview — every <artifact> renders in a clean srcdoc iframe. Editable in place via the file workspace; downloadable as HTML, PDF, ZIP.	72-system library — every product system shows its 4-color signature. Click for the full DESIGN.md, swatch grid, and live showcase.
Deck mode (guizang-ppt) — the bundled guizang-ppt-skill drops in unchanged. Magazine layouts, WebGL hero backgrounds, single-file HTML output, PDF export.	Mobile prototype — pixel-accurate iPhone 15 Pro chrome (Dynamic Island, status bar SVGs, home indicator). Multi-screen prototypes use the shared /frames/ assets so the agent never re-draws a phone.

Skills

31 skills ship in the box. Each is a folder under skills/ following the Claude Code SKILL.md convention with an extended od: frontmatter that the daemon parses verbatim — mode, platform, scenario, preview.type, design_system.requires, default_for, featured, fidelity, speaker_notes, animations, example_prompt (apps/daemon/src/skills.ts).

Two top-level modes carry the catalog: prototype (27 skills — anything that renders as a single-page artifact, from a magazine landing to a phone screen to a PM spec doc) and deck (4 skills — horizontal-swipe presentations with deck-framework chrome). The scenario field is what the picker groups them by: design · marketing · operation · engineering · product · finance · hr · sale · personal.

Showcase examples

The visually distinctive skills you'll most likely run first. Each ships a real example.html you can open straight from the repo to see exactly what the agent will produce — no auth, no setup.

dating-web · prototype Consumer dating / matchmaking dashboard — left rail nav, ticker bar, KPIs, 30-day mutual-matches chart, editorial typography.	digital-eguide · template Two-spread digital e-guide — cover (title, author, TOC teaser) + lesson spread with pull-quote and step list. Creator / lifestyle tone.
email-marketing · prototype Brand product-launch HTML email — masthead, hero image, headline lockup, CTA, specs grid. Centered single-column, table-fallback safe.	gamified-app · prototype Three-frame gamified mobile-app prototype on a dark showcase stage — cover, today's quests with XP ribbons + level bar, quest detail.
mobile-onboarding · prototype Three-frame mobile onboarding flow — splash, value-prop, sign-in. Status bar, swipe dots, primary CTA.	motion-frames · prototype Single-frame motion-design hero with looping CSS animations — rotating type ring, animated globe, ticking timer. Hand-off ready for HyperFrames.
social-carousel · prototype Three-card 1080×1080 social-media carousel — cinematic panels with display headlines that connect across the series, brand mark, loop affordance.	sprite-animation · prototype Pixel / 8-bit animated explainer slide — full-bleed cream stage, animated pixel mascot, kinetic Japanese display type, looping CSS keyframes.

Design & marketing surfaces (prototype mode)

Skill	Platform	Scenario	What it produces
web-prototype	desktop	design	Single-page HTML — landings, marketing, hero pages (default for prototype)
saas-landing	desktop	marketing	Hero / features / pricing / CTA marketing layout
dashboard	desktop	operation	Admin / analytics with sidebar + dense data layout
pricing-page	desktop	sale	Standalone pricing + comparison tables
docs-page	desktop	engineering	3-column documentation layout
blog-post	desktop	marketing	Editorial long-form
mobile-app	mobile	design	iPhone 15 Pro / Pixel framed app screen(s)
mobile-onboarding	mobile	design	Multi-screen mobile onboarding flow (splash · value-prop · sign-in)
gamified-app	mobile	personal	Three-frame gamified mobile-app prototype
email-marketing	desktop	marketing	Brand product-launch HTML email (table-fallback safe)
social-carousel	desktop	marketing	3-card 1080×1080 social carousel
magazine-poster	desktop	marketing	Single-page magazine-style poster
motion-frames	desktop	marketing	Motion-design hero with looping CSS animations
sprite-animation	desktop	marketing	Pixel / 8-bit animated explainer slide
dating-web	desktop	personal	Consumer dating dashboard mockup
digital-eguide	desktop	marketing	Two-spread digital e-guide (cover + lesson)
wireframe-sketch	desktop	design	Hand-drawn ideation sketch — for the "show something visible early" pass
critique	desktop	design	Five-dimensional self-critique scoresheet (Philosophy · Hierarchy · Detail · Function · Innovation)
tweaks	desktop	design	AI-emitted tweaks panel — the model surfaces the parameters worth nudging

Deck surfaces (deck mode)

Skill	Default for	What it produces
guizang-ppt	default for deck	Magazine-style web PPT — bundled verbatim from op7418/guizang-ppt-skill, original LICENSE preserved
simple-deck	—	Minimal horizontal-swipe deck
replit-deck	—	Product-walkthrough deck (Replit-style)
weekly-update	—	Team weekly cadence as a swipe deck (progress · blockers · next)

Office & operations surfaces (prototype mode, document-flavored scenarios)

Skill	Scenario	What it produces
pm-spec	product	PM specification doc with TOC + decision log
team-okrs	product	OKR scoresheet
meeting-notes	operation	Meeting decision log
kanban-board	operation	Board snapshot
eng-runbook	engineering	Incident runbook
finance-report	finance	Exec finance summary
invoice	finance	Single-page invoice
hr-onboarding	hr	Role onboarding plan

Adding a skill takes one folder. Read docs/skills-protocol.md for the extended frontmatter, fork an existing skill, restart the daemon, it appears in the picker. The catalog endpoint is GET /api/skills; per-skill seed assembly (template + side-file references) lives at GET /api/skills/:id/example.

Six load-bearing ideas

1 · We don't ship an agent. Yours is good enough.

The daemon scans your PATH for claude, codex, cursor-agent, gemini, opencode, qwen, copilot, hermes, kimi, pi, and kiro-cli on startup. Whichever ones it finds become candidate design engines — driven over stdio with one adapter per CLI, swappable from the model picker. Inspired by multica and cc-switch. No CLI installed? POST /api/proxy/stream is the same pipeline minus the spawn — paste any OpenAI-compatible baseUrl + apiKey and the daemon forwards SSE chunks back, with loopback / link-local / RFC1918 destinations rejected at the edge.

2 · Skills are files, not plugins.

Following Claude Code's SKILL.md convention, each skill is SKILL.md + assets/ + references/. Drop a folder into skills/, restart the daemon, it appears in the picker. The bundled magazine-web-ppt is op7418/guizang-ppt-skill committed verbatim — original license preserved, attribution preserved.

3 · Design Systems are portable Markdown, not theme JSON.

The 9-section DESIGN.md schema from VoltAgent/awesome-design-md — color, typography, spacing, layout, components, motion, voice, brand, anti-patterns. Every artifact reads from the active system. Switch system → next render uses the new tokens. The dropdown ships with Linear, Stripe, Vercel, Airbnb, Tesla, Notion, Apple, Anthropic, Cursor, Supabase, Figma, Resend, Raycast, Lovable, Cohere, Mistral, ElevenLabs, X.AI, Spotify, Webflow, Sanity, PostHog, Sentry, MongoDB, ClickHouse, Cal, Replicate, Clay, Composio, Xiaohongshu… — plus 57 design skills sourced from awesome-design-skills.

4 · The interactive question form prevents 80% of redirects.

OD's prompt stack hard-codes a RULE 1: every fresh design brief begins with a <question-form id="discovery"> instead of code. Surface · audience · tone · brand context · scale · constraints. A long brief still leaves design decisions open — visual tone, color stance, scale — exactly the things the form locks down in 30 seconds. The cost of a wrong direction is one chat round, not one finished deck.

This is the Junior-Designer mode distilled from huashu-design: batch the questions up front, show something visible early (even a wireframe with grey blocks), let the user redirect cheaply. Combined with the brand-asset protocol (locate · download · grep hex · write brand-spec.md · vocalise), it's the single biggest reason output stops feeling like AI freestyle and starts feeling like a designer who paid attention before painting.

5 · The daemon makes the agent feel like it's on your laptop, because it is.

The daemon spawns the CLI with cwd set to the project's artifact folder under .od/projects/<id>/. The agent gets Read, Write, Bash, WebFetch — real tools against a real filesystem. It can Read the skill's assets/template.html, grep your CSS for hex values, write a brand-spec.md, drop generated images, and produce .pptx / .zip / .pdf files that show up in the file workspace as download chips when the turn ends. Sessions, conversations, messages, tabs persist in a local SQLite DB — pop the project open tomorrow and the agent's todo card is right where you left it.

6 · The prompt stack is the product.

What you compose at send time isn't "system + user". It's:

DISCOVERY directives  (turn-1 form, turn-2 brand branch, TodoWrite, 5-dim critique)
  + identity charter   (OFFICIAL_DESIGNER_PROMPT, anti-AI-slop, junior-pass)
  + active DESIGN.md   (72 systems available)
  + active SKILL.md    (31 skills available)
  + project metadata   (kind, fidelity, speakerNotes, animations, inspiration ids)
  + skill side files   (auto-injected pre-flight: read assets/template.html + references/*.md)
  + (deck kind, no skill seed) DECK_FRAMEWORK_DIRECTIVE   (nav / counter / scroll / print)

Every layer is composable. Every layer is a file you can edit. Read apps/web/src/prompts/system.ts and apps/web/src/prompts/discovery.ts to see the actual contract.

Architecture

┌────────────────────── browser (Next.js 16) ──────────────────────┐
│  chat · file workspace · iframe preview · settings · imports     │
└──────────────┬───────────────────────────────────┬───────────────┘
               │ /api/* (rewritten in dev)          │
               ▼                                    ▼
   ┌──────────────────────────────────┐   /api/proxy/stream (SSE)
   │  Local daemon (Express + SQLite) │   ─→ any OpenAI-compat
   │                                  │       endpoint (BYOK)
   │  /api/agents          /api/skills│       w/ SSRF blocking
   │  /api/design-systems  /api/projects/…
   │  /api/chat (SSE)      /api/proxy/stream (SSE)
   │  /api/templates       /api/import/claude-design
   │  /api/artifacts/save  /api/artifacts/lint
   │  /api/upload          /api/projects/:id/files…
   │  /artifacts (static)  /frames (static)
   │
   │  optional: sidecar IPC at /tmp/open-design/ipc/<ns>/<app>.sock
   │  (STATUS · EVAL · SCREENSHOT · CONSOLE · CLICK · SHUTDOWN)
   └─────────┬────────────────────────┘
             │ spawn(cli, [...], { cwd: .od/projects/<id> })
             ▼
   ┌──────────────────────────────────────────────────────────────────┐
   │  claude · codex · gemini · opencode · cursor-agent · qwen        │
   │  copilot · hermes (ACP) · kimi (ACP) · pi (RPC) · kiro (ACP)      │
   │  reads SKILL.md + DESIGN.md, writes artifacts to disk            │
   └──────────────────────────────────────────────────────────────────┘

Layer	Stack
Frontend	Next.js 16 App Router + React 18 + TypeScript, Vercel-deployable
Daemon	Node 24 · Express · SSE streaming · better-sqlite3; tables: projects · conversations · messages · tabs · templates
Agent transport	child_process.spawn; typed-event parsers for claude-stream-json (Claude Code), copilot-stream-json (Copilot), json-event-stream per-CLI parsers (Codex / Gemini / OpenCode / Cursor Agent), acp-json-rpc (Hermes / Kimi / Kiro via Agent Client Protocol), pi-rpc (Pi via stdio JSON-RPC), plain (Qwen Code)
BYOK proxy	POST /api/proxy/stream → OpenAI-compatible /v1/chat/completions, SSE pass-through; rejects loopback / link-local / RFC1918 hosts at the daemon edge
Storage	Plain files in .od/projects/<id>/ + SQLite at .od/app.sqlite (gitignored, auto-created). Override the root with OD_DATA_DIR for test isolation
Preview	Sandboxed iframe via srcdoc + per-skill <artifact> parser (apps/web/src/artifacts/parser.ts)
Export	HTML (inline assets) · PDF (browser print, deck-aware) · PPTX (agent-driven via skill) · ZIP (archiver) · Markdown
Lifecycle	pnpm tools-dev start | stop | run | status | logs | inspect | check; ports via --daemon-port / --web-port, namespaces via --namespace
Desktop (optional)	Electron shell — discovers the web URL through sidecar IPC, no port guessing; same STATUS/EVAL/SCREENSHOT/CONSOLE/CLICK/SHUTDOWN channel powers tools-dev inspect desktop … for E2E

Quickstart

git clone https://github.com/nexu-io/open-design.git
cd open-design
corepack enable
corepack pnpm --version   # should print 10.33.2
pnpm install
pnpm tools-dev run web
# open the web URL printed by tools-dev

Environment requirements: Node ~24 and pnpm 10.33.x. nvm/fnm are optional helpers only; if you use one, run nvm install 24 && nvm use 24 or fnm install 24 && fnm use 24 before pnpm install.

For desktop/background startup, fixed-port restarts, and media generation dispatcher checks (OD_BIN, OD_DAEMON_URL, apps/daemon/dist/cli.js), see QUICKSTART.md.

The first load:

1. Detects which agent CLIs you have on PATH and picks one automatically.
2. Loads 31 skills + 72 design systems.
3. Pops the welcome dialog so you can paste an Anthropic key (only needed for the BYOK fallback path).
4. Auto-creates ./.od/ — the local runtime folder for the SQLite project DB, per-project artifacts, and saved renders. There is no od init step; the daemon mkdirs everything it needs on boot.

Type a prompt, hit Send, watch the question form arrive, fill it, watch the todo card stream, watch the artifact render. Click Save to disk or download as a project ZIP.

First-run state (./.od/)

The daemon owns one hidden folder at the repo root. Everything in it is gitignored and machine-local — never commit it.

.od/
├── app.sqlite                 ← projects · conversations · messages · open tabs
├── artifacts/                 ← one-off "Save to disk" renders (timestamped)
└── projects/<id>/             ← per-project working dir, also the agent's cwd

Want to…	Do this
Inspect what's in there	ls -la .od && sqlite3 .od/app.sqlite '.tables'
Reset to a clean slate	pnpm tools-dev stop, rm -rf .od, run pnpm tools-dev run web again
Move it elsewhere	not supported yet — the path is hard-coded relative to the repo

Full file map, scripts, and troubleshooting → QUICKSTART.md.

Repository structure

open-design/
├── README.md                      ← this file
├── README.de.md                   ← Deutsch
├── README.zh-CN.md                ← 简体中文
├── QUICKSTART.md                  ← run / build / deploy guide
├── package.json                   ← pnpm workspace, single bin: od
│
├── apps/
│   ├── daemon/                    ← Node + Express, the only server
│   │   ├── src/                   ← TypeScript daemon source
│   │   │   ├── cli.ts             ← `od` bin source, compiled to dist/cli.js
│   │   │   ├── server.ts          ← /api/* routes (projects, chat, files, exports)
│   │   │   ├── agents.ts          ← PATH scanner + per-CLI argv builders
│   │   │   ├── claude-stream.ts   ← streaming JSON parser for Claude Code stdout
│   │   │   ├── skills.ts          ← SKILL.md frontmatter loader
│   │   │   └── db.ts              ← SQLite schema (projects/messages/templates/tabs)
│   │   ├── sidecar/               ← tools-dev daemon sidecar wrapper
│   │   └── tests/                 ← daemon package tests
│   │
│   └── web/                       ← Next.js 16 App Router + React client
│       ├── app/                   ← App Router entrypoints
│       ├── next.config.ts         ← dev rewrites + prod static export to out/
│       └── src/                   ← React + TypeScript client modules
│           ├── App.tsx            ← routing, bootstrap, settings
│           ├── components/        ← chat, composer, picker, preview, sketch, …
│           ├── prompts/
│           │   ├── system.ts      ← composeSystemPrompt(base, skill, DS, metadata)
│           │   ├── discovery.ts   ← turn-1 form + turn-2 branch + 5-dim critique
│           │   └── directions.ts  ← 5 visual directions × OKLch palette + font stack
│           ├── artifacts/         ← streaming <artifact> parser + manifests
│           ├── runtime/           ← iframe srcdoc, markdown, export helpers
│           ├── providers/         ← daemon SSE + BYOK API transports
│           └── state/             ← config + projects (localStorage + daemon-backed)
│
├── e2e/                           ← Playwright UI + external integration/Vitest harness
│
├── packages/
│   ├── contracts/                 ← shared web/daemon app contracts
│   ├── sidecar-proto/             ← Open Design sidecar protocol contract
│   ├── sidecar/                   ← generic sidecar runtime primitives
│   └── platform/                  ← generic process/platform primitives
│
├── skills/                        ← 31 SKILL.md skill bundles (27 prototype + 4 deck)
│   ├── web-prototype/             ← default for prototype mode
│   ├── saas-landing/  dashboard/  pricing-page/  docs-page/  blog-post/
│   ├── mobile-app/  mobile-onboarding/  gamified-app/
│   ├── email-marketing/  social-carousel/  magazine-poster/
│   ├── motion-frames/  sprite-animation/  digital-eguide/  dating-web/
│   ├── critique/  tweaks/  wireframe-sketch/
│   ├── pm-spec/  team-okrs/  meeting-notes/  kanban-board/
│   ├── eng-runbook/  finance-report/  invoice/  hr-onboarding/
│   ├── simple-deck/  replit-deck/  weekly-update/   ← deck mode
│   └── guizang-ppt/               ← bundled magazine-web-ppt (default for deck)
│       ├── SKILL.md
│       ├── assets/template.html   ← seed
│       └── references/{themes,layouts,components,checklist}.md
│
├── design-systems/                ← 72 DESIGN.md systems
│   ├── default/                   ← Neutral Modern (starter)
│   ├── warm-editorial/            ← Warm Editorial (starter)
│   ├── linear-app/  vercel/  stripe/  airbnb/  notion/  cursor/  apple/  …
│   └── README.md                  ← catalog overview
│
├── assets/
│   └── frames/                    ← shared device frames (used cross-skill)
│       ├── iphone-15-pro.html
│       ├── android-pixel.html
│       ├── ipad-pro.html
│       ├── macbook.html
│       └── browser-chrome.html
│
├── templates/
│   ├── deck-framework.html        ← deck baseline (nav / counter / print)
│   └── kami-deck.html             ← kami-flavored deck starter (parchment / ink-blue serif)
│
├── scripts/
│   └── sync-design-systems.ts     ← re-import upstream awesome-design-md tarball
│
├── docs/
│   ├── spec.md                    ← product spec, scenarios, differentiation
│   ├── architecture.md            ← topologies, data flow, components
│   ├── skills-protocol.md         ← extended SKILL.md od: frontmatter
│   ├── agent-adapters.md          ← per-CLI detection + dispatch
│   ├── modes.md                   ← prototype / deck / template / design-system
│   ├── references.md              ← long-form provenance
│   ├── roadmap.md                 ← phased delivery
│   ├── schemas/                   ← JSON schemas
│   └── examples/                  ← canonical artifact examples
│
└── .od/                           ← runtime data, gitignored, auto-created
    ├── app.sqlite                 ← projects / conversations / messages / tabs
    ├── projects/<id>/             ← per-project working folder (agent's cwd)
    └── artifacts/                 ← saved one-off renders

Design Systems

72 systems out of the box, each as a single DESIGN.md:

Full catalog (click to expand)

AI & LLM — claude · cohere · mistral-ai · minimax · together-ai · replicate · runwayml · elevenlabs · ollama · x-ai

Developer Tools — cursor · vercel · linear-app · framer · expo · clickhouse · mongodb · supabase · hashicorp · posthog · sentry · warp · webflow · sanity · mintlify · lovable · composio · opencode-ai · voltagent

Productivity — notion · figma · miro · airtable · superhuman · intercom · zapier · cal · clay · raycast

Fintech — stripe · coinbase · binance · kraken · mastercard · revolut · wise

E-Commerce — shopify · airbnb · uber · nike · starbucks · pinterest

Media — spotify · playstation · wired · theverge · meta

Automotive — tesla · bmw · ferrari · lamborghini · bugatti · renault

Other — apple · ibm · nvidia · vodafone · sentry · resend · spacex

Starters — default (Neutral Modern) · warm-editorial

The product-system library is imported via scripts/sync-design-systems.ts from VoltAgent/awesome-design-md. Re-run to refresh. The 57 design skills are sourced from bergside/awesome-design-skills and added directly in design-systems/.

Visual directions

When the user has no brand spec, the agent emits a second form with five curated directions — the OD adaptation of huashu-design's "5 schools × 20 design philosophies" fallback. Each direction is a deterministic spec — palette in OKLch, font stack, layout posture cues, references — that the agent binds verbatim into the seed template's :root. One radio click → a fully specified visual system. No improvisation, no AI-slop.

Direction	Mood	Refs
Editorial — Monocle / FT	Print magazine, ink + cream + warm rust	Monocle · FT Weekend · NYT Magazine
Modern minimal — Linear / Vercel	Cool, structured, minimal accent	Linear · Vercel · Stripe
Tech utility	Information density, monospace, terminal	Bloomberg · Bauhaus tools
Brutalist	Raw, oversized type, no shadows, harsh accents	Bloomberg Businessweek · Achtung
Soft warm	Generous, low contrast, peachy neutrals	Notion marketing · Apple Health

Full spec → apps/web/src/prompts/directions.ts.

Media generation

OD doesn't stop at code. The same chat surface that produces <artifact> HTML also drives image, video, and audio generation, with model adapters wired into the daemon's media pipeline (apps/daemon/src/media-models.ts, apps/web/src/media/models.ts). Every render lands as a real file in the project workspace — .png for image, .mp4 for video — and shows up as a download chip when the turn ends.

Three model families carry the load today:

Surface	Model	Provider	What it's for
Image	gpt-image-2	Azure / OpenAI	Posters, profile avatars, illustrated maps, infographics, magazine-style social cards, photo restoration, exploded-view product art
Video	seedance-2.0	ByteDance Volcengine	15s cinematic t2v + i2v with audio — narrative shorts, character close-ups, product films, MV-style choreography
Video	hyperframes-html	HeyGen / OSS	HTML→MP4 motion graphics — product reveals, kinetic typography, data charts, social overlays, logo outros, TikTok-style verticals with karaoke captions

A growing prompt gallery at prompt-templates/ ships 93 ready-to-replicate prompts — 43 image (prompt-templates/image/*.json), 39 Seedance (prompt-templates/video/*.json excluding hyperframes-*), 11 HyperFrames (prompt-templates/video/hyperframes-*.json). Each carries a preview thumbnail, the prompt body verbatim, the target model, the aspect ratio, and a source block for license + attribution. The daemon serves them at GET /api/prompt-templates, the web app surfaces them as a card grid in the Image templates and Video templates tabs of the entry view; one click drops a prompt into the composer with the right model preselected.

gpt-image-2 — image gallery (sample of 43)

3D Stone Staircase Evolution Infographic 3-step infographic, hewn-stone aesthetic

Illustrated City Food Map Editorial hand-illustrated travel poster

Cinematic Elevator Scene Single-frame editorial fashion still

Cyberpunk Anime Portrait Profile avatar — neon face text

Glamorous Woman in Black Portrait Editorial studio portrait

Full set → prompt-templates/image/. Sources: most pull from YouMind-OpenLab/awesome-gpt-image-prompts (CC-BY-4.0) with author attribution preserved per template.

Seedance 2.0 — video gallery (sample of 39)

Music Podcast & Guitar Technique 4K cinematic studio film

Emotional Face Close-up Cinematic micro-expression study

Luxury Supercar Cinematic Narrative product film

Forbidden City Cat Satire Stylised satire short

Japanese Romance Short Film 15s Seedance 2.0 narrative

Click any thumbnail to play the actual rendered MP4. Full set → prompt-templates/video/ (the *-seedance-* and Cinematic-tagged entries). Sources: YouMind-OpenLab/awesome-seedance-2-prompts (CC-BY-4.0) with original tweet links and author handles preserved.

HyperFrames — HTML→MP4 motion graphics (11 ready-to-replicate templates)

heygen-com/hyperframes is HeyGen's open-source agent-native video framework — you (or the agent) write HTML + CSS + GSAP, HyperFrames renders it to a deterministic MP4 via headless Chrome + FFmpeg. Open Design ships HyperFrames as a first-class video model (hyperframes-html) wired into the daemon dispatch, plus the skills/hyperframes/ skill that teaches the agent the timeline contract, scene-transition rules, audio-reactive patterns, captions/TTS, and the catalog blocks (npx hyperframes add <slug>).

Eleven hyperframes prompts ship under prompt-templates/video/hyperframes-*.json, each one a concrete brief that produces a specific archetype:

5s minimal product reveal · 16:9 · push-in title card with shader transition	30s SaaS product promo · 16:9 · Linear/ClickUp-style with UI 3D reveals	TikTok karaoke talking-head · 9:16 · TTS + word-synced captions	30s brand sizzle reel · 16:9 · beat-synced kinetic typography, audio-reactive
Animated bar-chart race · 16:9 · NYT-style data infographic	Flight map (origin → dest) · 16:9 · Apple-style cinematic route reveal	4s cinematic logo outro · 16:9 · piece-by-piece assembly + bloom	$0 → $10K money counter · 9:16 · Apple-style hype with green flash + burst
3-phone app showcase · 16:9 · floating phones with feature callouts	Social overlay stack · 9:16 · X · Reddit · Spotify · Instagram in sequence	Website-to-video pipeline · 16:9 · captures site at 3 viewports + transitions

Pattern is the same as the rest: pick a template, edit the brief, send. The agent reads the bundled skills/hyperframes/SKILL.md (which carries the OD-specific render workflow — composition source files into a .hyperframes-cache/ so they don't clutter the file workspace, daemon dispatches npx hyperframes render to dodge the macOS sandbox-exec / Puppeteer hang, only the final .mp4 lands as a project chip), authors the composition, and ships an MP4. Catalog block thumbnails © HeyGen, served from their CDN; the OSS framework itself is Apache-2.0.

Also wired but not surfaced as templates yet: Kling 2.0 / 1.6 / 1.5, Veo 3 / Veo 2, Sora 2 / Sora 2-Pro (via Fal), MiniMax video-01 — all live in VIDEO_MODELS (apps/web/src/media/models.ts). Suno v5 / v4.5, Udio v2, Lyria 2 (music) and gpt-4o-mini-tts, MiniMax TTS (speech) cover the audio surface. Templates for these are open contributions — drop a JSON into prompt-templates/video/ or prompt-templates/audio/ and it shows up in the picker.

Beyond chat — what else ships

The chat / artifact loop gets the spotlight, but a handful of less-visible capabilities are already wired and worth knowing before you compare OD to anything else:

• Claude Design ZIP import. Drop an export from claude.ai onto the welcome dialog. POST /api/import/claude-design extracts it into a real .od/projects/<id>/, opens the entry file as a tab, and stages a continue-where-Anthropic-left-off prompt for your local agent. No re-prompting, no "ask the model to re-create what we just had". (apps/daemon/src/server.ts — /api/import/claude-design)
• OpenAI-compatible BYOK proxy. POST /api/proxy/stream takes { baseUrl, apiKey, model, messages }, normalises the path (…/v1/chat/completions), forwards SSE chunks back to the browser, and rejects loopback / link-local / RFC1918 destinations to head off SSRF. Anything that speaks the OpenAI chat schema works — Anthropic-via-OpenAI shim, DeepSeek, Groq, MiMo, OpenRouter, your self-hosted vLLM. MiMo gets tool_choice: 'none' automatically because its tool schema misbehaves on free-form generation.
• User-saved templates. Once you like a render, POST /api/templates snapshots the HTML + metadata into the SQLite templates table. The next project picks it from a "your templates" row in the picker — same surface as the shipped 31, but yours.
• Tab persistence. Every project remembers its open files and active tab in the tabs table. Reopen the project tomorrow and the workspace looks exactly the way you left it.
• Artifact lint API. POST /api/artifacts/lint runs structural checks on a generated artifact (broken <artifact> framing, missing required side files, stale palette tokens) and returns findings the agent can read back into its next turn. The five-dim self-critique uses this to ground its score in real evidence, not vibes.
• Sidecar protocol + desktop automation. Daemon, web, and desktop processes carry typed five-field stamps (app · mode · namespace · ipc · source) and expose a JSON-RPC IPC channel at /tmp/open-design/ipc/<namespace>/<app>.sock. tools-dev inspect desktop status \| eval \| screenshot drives that channel, so headless E2E works against a real Electron shell without bespoke harnesses (packages/sidecar-proto/, apps/desktop/src/main/).
• Windows-friendly spawning. Every adapter that would otherwise blow CreateProcess's ~32 KB argv limit on long composed prompts (Codex, Gemini, OpenCode, Cursor Agent, Qwen, Pi) feeds the prompt over stdin instead. Claude Code and Copilot keep -p; the daemon falls back to a temp prompt-file when even that overflows.
• Per-namespace runtime data. OD_DATA_DIR and --namespace give you fully isolated .od/-style trees, so Playwright, beta channels, and your real projects never share a SQLite file.

Anti-AI-slop machinery

The whole machinery below is the huashu-design playbook, ported into OD's prompt-stack and made enforceable per-skill via the side-file pre-flight. Read apps/web/src/prompts/discovery.ts for the live wording:

• Question form first. Turn 1 is <question-form> only — no thinking, no tools, no narration. The user chooses defaults at radio speed.
• Brand-spec extraction. When the user attaches a screenshot or URL, the agent runs a five-step protocol (locate · download · grep hex · codify brand-spec.md · vocalise) before writing CSS. Never guesses brand colors from memory.
• Five-dim critique. Before emitting <artifact>, the agent silently scores its output 1–5 across philosophy / hierarchy / execution / specificity / restraint. Anything under 3/5 is a regression — fix and rescore. Two passes is normal.
• P0/P1/P2 checklist. Every skill ships a references/checklist.md with hard P0 gates. The agent must pass P0 before emitting.
• Slop blacklist. Aggressive purple gradients, generic emoji icons, rounded card with left-border accent, hand-drawn SVG humans, Inter as a display face, invented metrics — explicitly forbidden in the prompt.
• Honest placeholders > fake stats. When the agent doesn't have a real number, it writes — or a labelled grey block, not "10× faster".

Comparison

Axis	Claude Design (Anthropic)	Open CoDesign	Open Design
License	Closed	MIT	Apache-2.0
Form factor	Web (claude.ai)	Desktop (Electron)	Web app + local daemon
Deployable on Vercel	❌	❌	✅
Agent runtime	Bundled (Opus 4.7)	Bundled (pi-ai)	Delegated to user's existing CLI
Skills	Proprietary	12 custom TS modules + SKILL.md	31 file-based SKILL.md bundles, droppable
Design system	Proprietary	DESIGN.md (v0.2 roadmap)	DESIGN.md × 129 systems shipped
Provider flexibility	Anthropic only	7+ via pi-ai	10 CLI adapters + OpenAI-compatible BYOK proxy
Init question form	❌	❌	✅ Hard rule, turn 1
Direction picker	❌	❌	✅ 5 deterministic directions
Live todo progress + tool stream	❌	✅	✅ (UX pattern from open-codesign)
Sandboxed iframe preview	❌	✅	✅ (pattern from open-codesign)
Claude Design ZIP import	n/a	❌	✅ POST /api/import/claude-design — keep editing where Anthropic left off
Comment-mode surgical edits	❌	✅	🚧 roadmap (lift from open-codesign)
AI-emitted tweaks panel	❌	✅	🟡 partial — tweaks skill ships, dedicated chat-side panel UX still on roadmap
Filesystem-grade workspace	❌	partial (Electron sandbox)	✅ Real cwd, real tools, persisted SQLite (projects · conversations · messages · tabs · templates)
5-dim self-critique	❌	❌	✅ Pre-emit gate
Artifact lint	❌	❌	✅ POST /api/artifacts/lint — findings fed back to the agent
Sidecar IPC + headless desktop	❌	❌	✅ Stamped processes + tools-dev inspect desktop status | eval | screenshot
Export formats	Limited	HTML / PDF / PPTX / ZIP / Markdown	HTML / PDF / PPTX (agent-driven) / ZIP / Markdown
PPT skill reuse	N/A	Built-in	guizang-ppt-skill drops in (default for deck mode)
Minimum billing	Pro / Max / Team	BYOK	BYOK — paste any OpenAI-compatible baseUrl

Supported coding agents

Auto-detected from PATH on daemon boot. No config required. Streaming dispatch lives in apps/daemon/src/agents.ts (AGENT_DEFS); per-CLI parsers live alongside it. Models are populated either by probing <bin> --list-models / <bin> models / ACP handshake, or from a curated fallback list when the CLI doesn't expose a list.

Agent	Bin	Stream format	Argv shape (composed prompt path)
Claude Code	claude	claude-stream-json (typed events)	claude -p <prompt> --output-format stream-json --verbose [--include-partial-messages] [--add-dir …] --permission-mode bypassPermissions
Codex CLI	codex	json-event-stream + codex parser	codex exec --json --skip-git-repo-check --full-auto [-C cwd] [--model …] [-c model_reasoning_effort=…] - (prompt on stdin)
Gemini CLI	gemini	json-event-stream + gemini parser	gemini --output-format stream-json --skip-trust --yolo [--model …] - (prompt on stdin)
OpenCode	opencode	json-event-stream + opencode parser	opencode run --format json --dangerously-skip-permissions [--model …] - (prompt on stdin)
Cursor Agent	cursor-agent	json-event-stream + cursor-agent parser	cursor-agent --print --output-format stream-json --stream-partial-output --force --trust [--workspace cwd] [--model …] - (prompt on stdin)
Qwen Code	qwen	plain (raw stdout chunks)	qwen --yolo [--model …] - (prompt on stdin)
GitHub Copilot CLI	copilot	copilot-stream-json (typed events)	copilot -p <prompt> --allow-all-tools --output-format json [--model …] [--add-dir …]
Hermes	hermes	acp-json-rpc (Agent Client Protocol)	hermes acp --accept-hooks
Kimi CLI	kimi	acp-json-rpc	kimi acp
Kiro CLI	kiro-cli	acp-json-rpc	kiro-cli acp
Pi	pi	pi-rpc (stdio JSON-RPC)	pi --mode rpc --no-session [--model …] [--thinking …] (prompt sent as RPC prompt command)
OpenAI-compatible BYOK	n/a	SSE pass-through	POST /api/proxy/stream → <baseUrl>/v1/chat/completions; SSRF-guarded against loopback / link-local / RFC1918

Adding a new CLI is one entry in apps/daemon/src/agents.ts. Streaming format is one of claude-stream-json, copilot-stream-json, json-event-stream (with a per-CLI eventParser), acp-json-rpc, pi-rpc, or plain.

References & lineage

Every external project this repo borrows from. Each link goes to the source so you can verify the provenance.

Project	Role here
Claude Design	The closed-source product this repo is the open-source alternative to.
alchaincyf/huashu-design	The design-philosophy core. Junior-Designer workflow, the 5-step brand-asset protocol, anti-AI-slop checklist, 5-dimensional self-critique, and the "5 schools × 20 design philosophies" library behind our direction picker — all distilled into apps/web/src/prompts/discovery.ts and apps/web/src/prompts/directions.ts.
op7418/guizang-ppt-skill	Magazine-web-PPT skill bundled verbatim under skills/guizang-ppt/ with original LICENSE preserved. Default for deck mode. P0/P1/P2 checklist culture borrowed for every other skill.
multica-ai/multica	The daemon + adapter architecture. PATH-scan agent detection, local daemon as the only privileged process, agent-as-teammate worldview. We adopt the model; we do not vendor the code.
OpenCoworkAI/open-codesign	The first open-source Claude-Design alternative and our closest peer. UX patterns adopted: streaming-artifact loop, sandboxed-iframe preview (vendored React 18 + Babel), live agent panel (todos + tool calls + interruptible), five-format export list (HTML/PDF/PPTX/ZIP/Markdown), local-first storage hub, SKILL.md taste-injection. UX patterns on our roadmap: comment-mode surgical edits, AI-emitted tweaks panel. We deliberately do not vendor pi-ai — open-codesign bundles it as the agent runtime; we delegate to whichever CLI the user already has.
VoltAgent/awesome-claude-design / awesome-design-md	Source of the 9-section DESIGN.md schema and 70 product systems imported via scripts/sync-design-systems.ts.
bergside/awesome-design-skills	Source of 57 design skills added directly as normalized DESIGN.md files under design-systems/.
farion1231/cc-switch	Inspiration for symlink-based skill distribution across multiple agent CLIs.
Claude Code skills	The SKILL.md convention adopted verbatim — any Claude Code skill drops into skills/ and is picked up by the daemon.

Long-form provenance write-up — what we take from each, what we deliberately don't — lives at docs/references.md.

Roadmap

• Daemon + agent detection (10 CLI adapters) + skill registry + design-system catalog
• Web app + chat + question form + 5-direction picker + todo progress + sandboxed preview
• 31 skills + 72 design systems + 5 visual directions + 5 device frames
• SQLite-backed projects · conversations · messages · tabs · templates
• OpenAI-compatible BYOK proxy (/api/proxy/stream) with SSRF guard
• Claude Design ZIP import (/api/import/claude-design)
• Sidecar protocol + Electron desktop with IPC automation (STATUS / EVAL / SCREENSHOT / CONSOLE / CLICK / SHUTDOWN)
• Artifact lint API + 5-dim self-critique pre-emit gate
• Comment-mode surgical edits (click element → instruction → patch) — pattern from open-codesign
• AI-emitted tweaks panel UX — building block (tweaks skill) ships; chat-integrated panel still pending
• Vercel + tunnel deployment recipe (Topology B)
• One-command npx od init to scaffold a project with DESIGN.md
• Skill marketplace (od skills install <github-repo>) and od skill add | list | remove | test CLI surface (drafted in docs/skills-protocol.md, implementation pending)
• Packaged Electron build out of apps/packaged/

Phased delivery → docs/roadmap.md.

Status

This is an early implementation — the closed loop (detect → pick skill + design system → chat → parse <artifact> → preview → save) runs end-to-end. The prompt stack and skill library are where most of the value lives, and they're stable. The component-level UI is shipping daily.

Star us

If this saved you thirty minutes — give it a ★. Stars don't pay rent, but they tell the next designer, agent, and contributor that this experiment is worth their attention. One click, three seconds, real signal: github.com/nexu-io/open-design.

Contributing

Issues, PRs, new skills, and new design systems are all welcome. The highest-leverage contributions are usually one folder, one Markdown file, or one PR-sized adapter:

• Add a skill — drop a folder into skills/ following the SKILL.md convention.
• Add a design system — drop a DESIGN.md into design-systems/<brand>/ using the 9-section schema.
• Wire up a new coding-agent CLI — one entry in apps/daemon/src/agents.ts.

Full walkthrough, bar-for-merging, code style, and what we don't accept → CONTRIBUTING.md (Deutsch, 简体中文).

Contributors

Thanks to everyone who has helped move Open Design forward — through code, docs, feedback, new skills, new design systems, or even a sharp issue. Every real contribution counts, and the wall below is the easiest way to say so out loud.

If you've shipped your first PR — welcome. The good-first-issue label is the entry point.

Repository activity

The SVG above is regenerated daily by .github/workflows/metrics.yml using lowlighter/metrics. Trigger a manual refresh from the Actions tab if you want it sooner; for richer plugins (traffic, follow-up time), add a METRICS_TOKEN repository secret with a fine-grained PAT.

Star History

If the curve bends up, that's the signal we look for. ★ this repo to push it.

Credits

The HTML PPT Studio family of skills — the master skills/html-ppt/ and the per-template wrappers under skills/html-ppt-*/ (15 full-deck templates, 36 themes, 31 single-page layouts, 27 CSS animations + 20 canvas FX, the keyboard runtime, and the magnetic-card presenter mode) — are integrated from the open-source project lewislulu/html-ppt-skill (MIT). The upstream LICENSE ships in-tree at skills/html-ppt/LICENSE and authorship credit goes to @lewislulu. Each per-template Examples card (html-ppt-pitch-deck, html-ppt-tech-sharing, html-ppt-presenter-mode, html-ppt-xhs-post, …) delegates authoring guidance to the master skill so the upstream's prompt → output behavior is preserved end-to-end when you click Use this prompt.

The magazine / horizontal-swipe deck flow under skills/guizang-ppt/ is integrated from op7418/guizang-ppt-skill (MIT). Authorship credit goes to @op7418.

License

Apache-2.0. The bundled skills/guizang-ppt/ retains its original LICENSE (MIT) and authorship attribution to op7418. The bundled skills/html-ppt/ retains its original LICENSE (MIT) and authorship attribution to lewislulu.