Show HN: Chorono – Open-source 2D animation editor controllable via MCP

Chorono, an open-source, local-first 2D animation and motion graphics editor from developer codie1982, launched on Show HN with an MCP interface that lets Claude Code or Codex create editable scenes that users then refine in a browser. The editor requires Node.js 20+, npm, Git and a modern browser, and its bundled first-animation example contains a four-second scene with eight named layers and 51 editable keyframes. Setup installs MCP client settings and skills for Codex, Claude Code and Claude Desktop by default, and the local MCP workflow needs no model-provider API key.

Create animations with your AI agent. Refine every layer and keyframe visually. Chorono is an open-source, local-first 2D animation and motion graphics editor. Use Claude Code or Codex through MCP to create editable scenes, then adjust layers, keyframes, easing and timing in the browser. - Create with an agent or by hand. Work through MCP or use the visual editor directly. - Keep creative control. Refine shapes, text, particles and animation timing in the same scene. - Continue where you left off. Save a portable editable project and reopen it for the next revision. The editor runs on your computer with Node.js 20+, npm, Git and a modern browser. Install Chorono https://github.com/codie1982/chorono-editor/blob/main/docs/en/installation.md · Türkçe kurulum https://github.com/codie1982/chorono-editor/blob/main/docs/tr/installation.md · Editable example https://github.com/codie1982/chorono-editor/blob/main/examples/first-animation/README.md · Documentation https://github.com/codie1982/chorono-editor/blob/main/docs/README.md · Get help support Open the first-animation example https://github.com/codie1982/chorono-editor/blob/main/examples/first-animation/README.md to inspect a four-second scene with eight named layers and 51 editable keyframes. Change its headline or a circle's color, save the scene, and reopen it to continue editing. Claude Code or Codex can set up the editor, start it on your computer, and create editable animations through MCP. Start with the installation guide https://github.com/codie1982/chorono-editor/blob/main/docs/en/installation.md Türkçe https://github.com/codie1982/chorono-editor/blob/main/docs/tr/installation.md or the documentation index https://github.com/codie1982/chorono-editor/blob/main/docs/README.md . Install Node.js 20+ , npm, Git, and a modern browser. In Terminal on macOS/Linux or PowerShell on Windows: git clone https://github.com/codie1982/chorono-editor.git cd chorono-editor npm ci npm run cli:build npm run chorono -- setup npm run chorono -- start --background --open setup installs missing editor dependencies, builds missing outputs, prepares MCP client settings, and installs the bundled skills. The default --agent all selects Codex, Claude Code and Claude Desktop for MCP; use --agent codex , --agent claude-code or --agent claude-desktop to select one. Filesystem skills are installed for Codex and Claude Code. Claude Desktop has a separate skill import mechanism. Use --project /path/to/animation-project on setup, start and doctor to keep animation projects separate from the editor checkout. Existing checkouts are preserved; setup never pulls or resets them. The installation guide https://github.com/codie1982/chorono-editor/blob/main/docs/en/installation.md covers paths, client settings, stopping and rebuilding. Open the URL printed by start and choose MCP → Connect this editor . Reload your client's MCP connections or start a new agent session, then check: npm run chorono -- doctor Readiness requires a connected editor tab as well as a running server. Reconnect after a browser reload. Ask your agent: Use Chorono to create a scene with circles and text. Add intro, idle and outro animations, inspect preview frames, and save the editable project. Portable projects are saved under <animation-project /projects/ . This local MCP workflow needs no model-provider API key. See troubleshooting https://github.com/codie1982/chorono-editor/blob/main/docs/en/troubleshooting.md Türkçe https://github.com/codie1982/chorono-editor/blob/main/docs/tr/troubleshooting.md if doctor reports an incomplete connection. | Skill | What it teaches the agent | Source | |---|---|---| | chorono-setup | Install/start the editor, configure MCP clients, diagnose connections and manage skills | SKILL.md https://github.com/codie1982/chorono-editor/blob/main/skills/chorono-setup/SKILL.md | | chorono | Create/edit scenes, keyframes and timelines; inspect preview images; validate and save editable projects | SKILL.md https://github.com/codie1982/chorono-editor/blob/main/skills/chorono/SKILL.md | The source structure keeps the main instructions short and loads topic references when needed: skills/ ├── chorono-setup/ │ ├── SKILL.md │ └── agents/openai.yaml └── chorono/ ├── SKILL.md ├── agents/openai.yaml └── references/ ├── connection.md ├── animation.md ├── interaction.md └── media-and-output.md Setup already installs these skills for the selected agents. To manage only skills from a checkout after npm run cli:build : npm run skills -- list npm run skills -- install --dry-run npm run skills -- install npm run skills -- check npm run skills -- update Project installs go to .agents/skills/ for Codex and .claude/skills/ for Claude Code. Add --global --agent codex for a user-wide Codex install, or choose --agent claude-code . Modified copies are preserved. Alternatively, install only the instructions directly from GitHub with the third-party skills CLI https://github.com/vercel-labs/skills currently requires Node.js 22.20+ : npx skills add codie1982/chorono-editor --skill chorono --skill chorono-setup -a claude-code -a codex --copy Installing skills alone does not install/start the editor or connect MCP. Continue with steps 1–2. See the agent skills guide https://github.com/codie1982/chorono-editor/blob/main/docs/en/agent-skills.md Türkçe https://github.com/codie1982/chorono-editor/blob/main/docs/tr/agent-skills.md for scope, updates and the difference between installation methods. The standalone CLI source is packages/cli https://github.com/codie1982/chorono-editor/blob/main/packages/cli/README.md @codie1982/chorono . This quick start works from GitHub without relying on an npm release. For local tarballs and maintainer packaging, see the distribution guide https://github.com/codie1982/chorono-editor/blob/main/docs/tr/skills.md . WebGL2-accelerated rendering feature/gpu-particle-renderer-v1 : - Particles via WebGL instanced quads — every particle in an emitter draws in a single GPU draw call - 9 SDF particle shapes — Circle, Soft Circle, Rectangle, Rounded Rectangle, Line, Triangle, Star, Smoke Puff, Flame Blob — all anti-aliased in-shader fwidth - GPU post-effects — separable Gaussian blur shared by blur, glow, and shadow - After Effects-quality motion blur — accumulation of many equal-weight sub-frame samples smooth smear, not discrete ghosts - Automatic CPU fallback — graceful degradation to Canvas 2D when WebGL is unavailable - Smart GPU compositor — correct source-over / additive / screen / multiply blending against the scene below - Hardened — event system on every class, error handling, SSR-safe GPU capability probing, WebGL context-loss recovery GPU offloads the render ; particle simulation spawn/evaluate stays on CPU. Particles CPU render GPU render speedup 1,000 1.9 ms 0.01 ms ~140× 10,000 4.9 ms 0.12 ms ~42× 50,000 49.5 ms 0.6 ms ~84× At ~50k particles the CPU draw alone 49.5 ms blows the 16.6 ms/60 FPS budget; the GPU draw stays sub-millisecond. - Natural language animation creation — Describe your animation: "Mavi daire ekle, soldan sağa kay, fade in yap" → instant keyframes - Multi-turn agent loop — AI reasons → mutates scene → verifies → continues max 5 turns, 30 tools - Context-aware AI — Scene state, layer visibility, timeline position fed to every agent turn - Read & Mutate tools — Separate action types; AI can inspect before deciding next steps - Intent classification — Zero-cost system prompt analysis no LLM round-trip - Quality scoring — Automatic overlap detection, off-screen layers, composition balance check - High-level animation actions — create stagger animation , center layer , align layers , fit to canvas , create loop animation - Anthropic Claude — Native tool-use with caching support - OpenAI GPT-4o — tool use id round-trip compatible - Custom providers — Ollama, Groq, Together, Azure, local models - Fallback rendering — Graceful degradation if API unavailable - Editable paths — Circle, Rectangle, Line, Ellipse, Arc, Donut, N-gon, Star - Point editing — Corner, smooth, bezier, bezier-corner types - Segment operations — Insert anchors De Casteljau , delete, reverse, open/close - Text-to-spline — Convert text outlines to editable splines via OpenType.js - Hit-testing — Point, handle, segment, and contour selection with visual feedback - Select Similar — Match by scale, rotation, edge distance, type, opacity - Select by Transform — Rule-based selection AND/OR/NOT logic - Canvas tools — Box, Lasso, Circle, Paint selection modes - Inside vs Touching — 3ds Max Window/Crossing containment toggle - Non-intrusive — Selection state lives in UI layer, doesn't mutate scene - Clone tool — Live instances; source edits propagate automatically - Array patterns — Linear, Grid, Radial, Path, and Repeater non-destructive - Path array — Arc-length distribution along Bézier paths - Instance resolver — Render & hit-test aware of instancing hierarchy - Bake support — Convert instance to independent copy - Gizmos — Move, rotate, scale with live visual feedback - Multi-select rotation/scale — Shared pivot centroid for multiple layers - Snap guides — Vertex, angle, scale, smart guides with numeric display - Transform history — Every gizmo operation undoable - Out-of-range modes — Constant, Cycle, Loop, Ping-pong, Linear interpolation - Work area & markers — Playback regions, navigation markers Cmd+click to create - Keyframe tools — Slide by frame, range select, stagger dialog, spreadsheet editor - Ruler interactions — Shift+drag for range selection, visual feedback - Drive any property — Link layers via expressions and scene parameters - Formula categories — Clamp, Remap, Range, Curve, Phase, Modulo - Live preview — Real-time feedback of wired values - Broken-wire detection — Visual warnings for invalid references - Dock panel — Dedicated wiring panel with enable/edit/delete controls - Track header indicators — Show which parameters are wired - Node-graph editor — Visual state/transition design SVG-based - Per-state timelines — Each state references its own Timeline Rive/Unity Animator model - Guard conditions — Parameter-based transition rules no explicit trigger needed - Blend support — Smooth animation blending between states - Runtime player — ChronoPlayer with multi-state playhead - Export ready — Full .json serialization for headless playback - Sub-mode toggle — ● Animation ○ State Machine within single canvas - Full undo/redo — Scripts operate through command system automatic undo - Scene API — Add layers, update properties, delete, group - Timeline API — Create tracks, add keyframes, evaluate at time - Event system — Listen to layer events transform, visibility, etc. - Expression evaluator — Runtime property calculation with parameter context - MAXScript/Blender Python style — card = scene.add 'rect' syntax - Command wrapping — Every script mutation wrapped in undoable command - Game engine foundation — Extensible for future engine workflows - Headless ChronoPlayer — Standalone animation playback no UI - DevTools-style console — Live event log, REPL, watch expressions - Macro recording — Record user actions as scripts - Trigger system — Time-based, event-based, and manual triggers - Arithmetic — Sine, Pulse, Quantize, Offset, Scale, Clamp - Noise — Fractal, Jitter, Perlin noise-driven variation - Time manipulation — TimeWarp slow/fast , EaseCurve, Multiplier - Spring — Oscillation with damping frequency, damping ratio - Decay — Exponential falloff - Elastic — Overshoot oscillation - Bounce — Elastic collision simulation - Overshoot — Anticipation + follow-through - Separable Gaussian blur — Shared by blur, glow, and shadow - Motion blur — After Effects-style accumulation smooth smear - CSS filter fallback — Graceful degradation on non-GPU browsers - Real-time preview — Effect strength and quality adjustable - 6 emission shapes — Point, Line, Circle, Rectangle, Path, Source Layer - 9 particle types — Circle, Soft Circle, Rectangle, Rounded Rectangle, Line, Triangle, Star, Smoke Puff, Flame Blob - Scene-layer emission — Emit from any layer's geometry live motion - Dedicated dock tab — Separate particle controls from main properties - Density, speed, lifetime — All animatable via keyframes - Rotation, scale, color — Per-particle parameters - Blend modes — Normal, Screen, Additive, Multiply - Particle preview — In-modal SVG ghost preview with preset browser - LifeGradient editor — Animate color/opacity over particle lifetime - Preset browser — Curated particle effect library - Multi-source emitter — Emit from multiple layer geometries - Custom shapes — Polygon, N-gon, spiral, helix - Spawn velocity fields — Direction and speed variation - Tangent-follow orientation — Particles align to motion - File formats — Images JPG, PNG, WebP, etc. , video MP4, WebM , audio MP3, WAV , SVG, Lottie, dotLottie, Chorono scenes - Clipboard support — Paste images directly from clipboard - Asset registry — Centralized collection, inventory, orphan cleanup - Preview & preflight — Single-file modal preview before import - Atomic transactions — All-or-nothing import undo fully supported - SVG sanitization — Strip scripts, XXE protection, external-ref blocking - HTTPS-only validation — No mixed-content imports - URL validator — Prevent data: and javascript: URIs - 6 align operations — Left, Right, Top, Bottom, Center H/V - 3 reference modes — Selection bounds, Canvas bounds, Key Object - Distribute centers/spacing — Equal distribution with gap control - Pack & tidy — Auto-arrange with configurable spacing - Smart guides — Live center, edge, spacing overlays CSS-filter fallback - Auto-key — Automatically add keyframes when aligning animated layers - Right-click actions — LayerPanel, SceneCanvas, AssetsPanel, ParametersPanel, EventsPanel - Quick access — Add Layer, Fit/Zoom, Delete, Duplicate workflows Embed animations in any website: <script src="https://cdn.chorono.io/web-sdk/latest.js" </script <div id="animation-container" </div <script const player = new ChronoPlayer { container: ' animation-container', sceneUrl: 'https://cdn.example.com/my-animation.json', autoplay: true, loop: true } ; </script Features: - Lightweight bundle — ~45KB gzipped , lazy-loaded WebGL/Canvas - Event system — play , pause , seek , complete events - Property binding — Drive DOM attributes with animation values - Headless playback — ChronoPlayer with zero UI - Responsive — Auto-scale to container - Browser support — Chrome, Firefox, Safari 12+, Edge, mobile browsers API: player.play ; player.pause ; player.seek timeMs ; player.setPlaybackRate 1.5 ; player.setProperty 'layer.id', { opacity: 0.5 } ; player.on 'complete', = console.log 'Done ' ; Headless playback for Node.js and CLI: npm install @chorono/runtime See npm package https://www.npmjs.com/package/@chorono/runtime for latest version. Features: - Headless ChronoPlayer — Standalone animation playback no UI - Server-side rendering — Render frames to PNG/WebP for video generation - CLI tool — Export scenes to MP4, GIF, or frame sequences - Full Scene API — Manipulate scenes programmatically - Event system — Listen to animation events Native animation playback on Android: // Gradle dependencies { implementation 'io.chorono:chorono-android:1.0.0' } // Usage val player = ChronoPlayer context player.loadScene uri // File, Uri, or Stream player.play // Listen to events player.onEvent { event - when event { is PlayEvent - Log.d "Chorono", "Playing" is CompleteEvent - Log.d "Chorono", "Finished" } } // Control playback player.pause player.seek 2000 // ms player.setPlaybackRate 1.5 Features: - Native Canvas rendering — Android Canvas API CPU + OpenGL ES 3.0 GPU particles optional - Efficient — Frame-skipping on low-end devices, adaptive quality - Kotlin-first API — Coroutines support, lifecycle-aware - File & Network — Load from assets, Uri, InputStream - Scene composition — Merge multiple scenes, layer visibility control - Event forwarding — Animation events to app logic | Repository | Platform | Language/Framework | |---|---|---| | chorono-ios-sdk https://github.com/codie1982/chorono-ios-sdk | iOS / macOS | Swift | | chorono-macos https://github.com/codie1982/chorono-macos | macOS native | Swift | | chorono-flutter https://github.com/codie1982/chorono-flutter | iOS + Android | Flutter/Dart | | chorono-react-native https://github.com/codie1982/chorono-react-native | iOS + Android | React Native | | chorono-kmp https://github.com/codie1982/chorono-kmp | iOS + Android | Kotlin Multiplatform | | chorono-desktop https://github.com/codie1982/chorono-desktop | Windows / Linux / macOS | Electron | | chorono-qt https://github.com/codie1982/chorono-qt | Embedded / Desktop | Qt / C++ | | chorono-python https://github.com/codie1982/chorono-python | Server / scripting | Python | | chorono-node https://github.com/codie1982/chorono-node | Server / CLI | Node.js | | chorono-embed https://github.com/codie1982/chorono-embed | Lightweight embed | Vanilla JS | | chorono-wechat https://github.com/codie1982/chorono-wechat | WeChat Mini Program | JS | | chorono-tizen https://github.com/codie1982/chorono-tizen | Samsung Smart TV | Tizen JS | | chorono-webos https://github.com/codie1982/chorono-webos | LG Smart TV | webOS JS | | chorono-harmony https://github.com/codie1982/chorono-harmony | Huawei devices | HarmonyOS | | chorono-core https://github.com/codie1982/chorono-core | Cross-platform engine | C++ | | chorono-gpu https://github.com/codie1982/chorono-gpu | GPU rendering module | WGSL / GLSL | | chorono-runtime https://github.com/codie1982/chorono-runtime | Headless playback | TypeScript | The local MCP server is implemented in this repository. It connects Claude Desktop, Claude Code and Codex to the actual editor, with isolated QuickJS scripting, multi-timeline control, PNG previews, portable project persistence and the native ActionRegistry tools. Run npm run mcp:build , npm run mcp:setup , then npm run dev:mcp or build and npm run start:mcp . Open http://127.0.0.1:2000 , then click MCP → Connect this editor . Generated client configurations are in .chorono/client-configs/ . See the MCP setup and tool reference https://github.com/codie1982/chorono-editor/blob/main/docs/tr/mcp.md for configuration, all capabilities, security boundaries and smoke tests. Claude Desktop, Cursor, VS Code Copilot integration: - Native tools — Layer, keyframe, path, spline, particle, parameter and state-machine actions - Live scene — Tools read and mutate a connected browser tab with revision checks and undo/redo - Isolated scripting — QuickJS memory/time limits, atomic edits and commit-without-replay plans - Multiple animations — Explicit timelines, modifiers, controllers, preview isolation and runtime controls - Persistence — Portable scene JSON with embedded local media, runtime JSON, SVG and image sequence exports - Node.js 20+ and npm - Git - Modern browser with WebGL2 support Chrome, Firefox, Safari 15+, Edge git clone https://github.com/codie1982/chorono-editor.git cd chorono-editor npm ci npm run dev Open http://localhost:2000 http://localhost:2000 the dev server runs on port 2000 This starts the manual editor. For agent control, follow Set up and control Chorono from an agent set-up-and-control-chorono-from-an-agent , which also configures MCP and installs skills. Stop any running Next server before installing dependencies or building. Provider keys are for the editor's built-in AI panel. The external Claude/Codex MCP workflow above uses the model client and needs no provider key in the editor. ANTHROPIC API KEY=sk-... OPENAI API KEY=sk-... ChronoScene → Layer → Timeline → Track → Keyframe src/lib/render/gpu/ ├── GPUCapabilities.ts WebGL2/WebGL1 + extension detection SSR-safe ├── GPUCompositor.ts Identity-transform blend & blit to 2D canvas ├── GPUEvents.ts Shared typed event emitter base ├── particles/ │ ├── ParticleGPUBackend.ts Abstract backend │ ├── WebGLInstancedQuadBackend.ts Instanced-quad particle renderer │ ├── WebGLParticleShader.ts 9-shape SDF shaders WebGL2/1 │ └── ParticleBufferPacker.ts Per-frame instance staging buffer └── effects/ ├── GPUEffectShaders.ts Blur + motion-blur GLSL ├── GPUImageEffects.ts Separable Gaussian blur engine └── GPUMotionBlur.ts Accumulation motion-blur engine src/lib/render/renderMotionBlurAccumulated.ts Motion-blur orchestration - src/lib/core/ — Data model Layer, Timeline, ChronoScene - src/lib/editor/ — Commands and state management - src/lib/ai/ — AI integration ActionRegistry, AgentLoop - src/lib/render/ — Canvas + GPU rendering pipeline - src/components/ — UI panels and canvas npm test Run all tests npm test -- --watch Watch mode npm test -- --coverage Coverage report 1,000+ tests 1,086 covering core features, GPU buffer/transform logic, particle physics, and animation. npm run build npm start Critical: Never run next build while dev server is running — it corrupts .next/ . - OOP with abstract base classes - Private properties + getter/setters - Event emission for all new classes - Self-documenting code minimal comments Browse the documentation index https://github.com/codie1982/chorono-editor/blob/main/docs/README.md for the full guide list. | Guide | English | Türkçe | |---|---|---| | Computer installation and MCP connection | Installation https://github.com/codie1982/chorono-editor/blob/main/docs/en/installation.md | Bilgisayara kurulum https://github.com/codie1982/chorono-editor/blob/main/docs/tr/installation.md | | Skill structure, installation and updates | Agent skills https://github.com/codie1982/chorono-editor/blob/main/docs/en/agent-skills.md | Ajan skill'leri https://github.com/codie1982/chorono-editor/blob/main/docs/tr/agent-skills.md | | Connection and installation problems | Troubleshooting https://github.com/codie1982/chorono-editor/blob/main/docs/en/troubleshooting.md | Sorun giderme https://github.com/codie1982/chorono-editor/blob/main/docs/tr/troubleshooting.md | | First animation in the editor | Getting started https://github.com/codie1982/chorono-editor/blob/main/docs/en/getting-started.md | Başlangıç https://github.com/codie1982/chorono-editor/blob/main/docs/tr/getting-started.md | | JavaScript scene authoring | Scripting https://github.com/codie1982/chorono-editor/blob/main/docs/en/scripting.md | Betik yazımı https://github.com/codie1982/chorono-editor/blob/main/docs/tr/scripting.md | Technical references: MCP tools and limits https://github.com/codie1982/chorono-editor/blob/main/docs/tr/mcp.md , CLI and skill distribution https://github.com/codie1982/chorono-editor/blob/main/docs/tr/skills.md , and CLI package https://github.com/codie1982/chorono-editor/blob/main/packages/cli/README.md . | Feature | Status | Highlights | |---|---|---| | GPU Particle Renderer | ✅ Ready | 10K+ particles @ 60 FPS, 9 SDF shapes, motion blur | | State Machines FSM | ✅ Ready | Node-graph editor, guard conditions, timeline per-state | | Parameter Wiring | ✅ Ready | 17+ presets, broken-wire detection, track-header indicators | | AI Agent Loop | ✅ Ready | Multi-turn reasoning, read/mutate tools, intent classification | | Spline Object System | ✅ Ready | 8 primitives, point editing, text-to-spline conversion | | Smart Selection | ✅ Ready | Select Similar/Transform, canvas tools, Inside/Touching toggle | | Clone & Array | ✅ Ready | Live instances, 5 array patterns, instance resolver | | JavaScript Scripting | ✅ Ready | Full undo/redo, Scene/Timeline/Event APIs | | Branch | Feature | ETA | |---|---|---| | feature/gpu-particle-renderer-v1 | GPU blur + motion blur post-effects | Next | | feature/particle-effect-engine-bl13 | Particle v2 LifeGradient editor, presets, custom shapes | Sprint 2 | | feat/text-element-typography | Per-character animation framework | Sprint 3 | | feat/align-distribute-tools | Advanced composition smart guides, auto-key | Sprint 3 | Chorono is built on a multi-mode architecture. The 2D Animation mode is production-ready today. Additional modes are under active development: | Mode | Description | Status | |---|---|---| | 🎨 Drawing Mode | Vector illustration tools, brush engine, freehand paths | Coming Soon | | 🎮 Game Engine Mode | GameObjects, physics, collision, state-machine-first workflow | Coming Soon | | 🎬 Video Editor Mode | Clip timeline, transitions, color grading, multi-track audio | Coming Soon | | 🧊 3D Modeling Mode | Three.js-based 3D objects, cameras, lighting, GLTF export | Coming Soon | Each mode shares the same AI panel, scripting API, state machine system, and SDK export pipeline — only the scene object type, tools, and renderer change. | Feature | Description | Effort | |---|---|---| | Particle V2+ | Preset browser, physics fields, GPU trails | 3 weeks | | Runtime Console | DevTools-style debugging | 2 weeks | | Export formats | MP4, GIF, Lottie, SVG sequences | 4 weeks | | Drawing Mode | Brush engine + vector illustration | 6 weeks | | Game Engine Mode | Physics + collision + GameObject system | 8 weeks | - Install and connect: Follow the installation guide https://github.com/codie1982/chorono-editor/blob/main/docs/en/installation.md Türkçe https://github.com/codie1982/chorono-editor/blob/main/docs/tr/installation.md . - Resolve setup or MCP problems: Check troubleshooting https://github.com/codie1982/chorono-editor/blob/main/docs/en/troubleshooting.md Türkçe https://github.com/codie1982/chorono-editor/blob/main/docs/tr/troubleshooting.md . - Ask a question, report a bug or suggest a feature: Search existing issues https://github.com/codie1982/chorono-editor/issues or open a new issue https://github.com/codie1982/chorono-editor/issues/new . - Share your first-run experience: Use the first-animation feedback form https://github.com/codie1982/chorono-editor/issues/new?template=first-animation-feedback.yml . - Share your work or discuss workflows: Visit Chorono Discussions https://github.com/codie1982/chorono-editor/discussions . For installation or animation problems, include your operating system, Node.js version, agent client, steps to reproduce, and the expected and actual behavior. If relevant, include the output of npm run chorono -- doctor . Remove API keys, tokens and other private information before sharing logs or project files. 1. Follow OOP style guide CLAUDE.md 2. Write tests for new features 3. Emit events for scripting support 4. Update BACKLOG.md with progress 5. Create PR with detailed description MIT License Made with ❤️ by the Chorono team One platform. Every screen. Every creative tool.