CesiumJS Agent Skills
Curated agent skills for CesiumJS development — 14 domain skills covering ~551 public symbols across the CesiumJS v1.143 API surface.
See the July 2026 / CesiumJS 1.143 coverage matrix for the exact skill owner of every release addition, runtime fix, and announced workflow surface.
Quick Start
Claude Code
One-Liner from the terminal (recommended):
claude plugin marketplace add CesiumGS/cesiumjs-skills
From inside Claude Code:
- Type
/pluginand press Enter - Select Add Marketplace
- Enter
CesiumGS/cesiumjs-skills - Once the marketplace is added, type
/pluginagain - Select Install Plugin
- Choose cesiumjs-skills from the list
After installing, run /reload-plugins to activate the skills in your current session.
Any Agent Skills-Compatible Tool
These skills follow the Agent Skills open standard. Copy or symlink the skills/ directory into your workspace — skills are discovered automatically from skills/<name>/SKILL.md.
Table of Contents
Skills Catalog
| Skill | Activates when... |
|---|---|
| cesiumjs-viewer-setup | Initializing a CesiumJS app, configuring widgets, setting Ion tokens, bootstrapping a globe |
| cesiumjs-camera | Positioning the camera, flyTo animations, constraining navigation, entity tracking |
| cesiumjs-entities | Adding graphics and time-segmented paths; loading GeoJSON/KML/CZML/GPX through DataSources |
| cesiumjs-3d-tiles | Loading tilesets, compressed/CAD glTF, or MVT; styling, metadata, voxels, clipping |
| cesiumjs-imagery | Adding/swapping base map layers, configuring imagery providers, split-screen comparisons |
| cesiumjs-terrain-environment | Configuring terrain, querying heights, atmosphere/sky/fog/lighting/shadows, panoramas |
| cesiumjs-primitives | Performance-critical static/vector geometry, GeoJsonPrimitive, BufferPrimitive collections |
| cesiumjs-materials-shaders | Fabric materials, ImageBasedLighting, post-processing effects, bloom, tonemapping |
| cesiumjs-custom-shader | Writing GLSL shader bodies for Model/Cesium3DTileset/VoxelPrimitive; feature IDs, EXT_structural_metadata |
| cesiumjs-time-properties | Dynamic properties, simulation clock, interpolation, and interval/sampled path materials |
| cesiumjs-spatial-math | Coordinate conversions, ellipsoid geometry, model matrices, intersection tests, projections |
| cesiumjs-interaction | User clicks on the globe, multi-modifier shortcuts, entity/feature selection, hover, drag |
| cesiumjs-models-particles | Compressed/CAD glTF/GLB loading, edge display, animations, and particle effects |
| cesiumjs-core-utilities | HTTP requests via Resource, Color, Event, error handling, helper functions |
Domain Mapping
Every public class, function, and enum in CesiumJS is assigned to exactly one skill. Cross-domain ownership rules and the full symbol map are documented in docs/DOMAINS.md.
Compatibility
The Agent Skills format is an open standard originally developed by Anthropic and adopted by leading AI development tools including Claude Code, GitHub Copilot, and many others.
By popular demand, this repository also ships as a Claude Code plugin with a SessionStart hook and Chrome DevTools MCP integration for browser-based verification.
Repository Layout
cesiumjs-skills/
├── skills/ # The product
│ ├── cesiumjs-*/SKILL.md # 14 domain skills (CesiumJS v1.143)
│ └── using-cesiumjs-skills/ # Bootstrap orientation skill
├── docs/
│ ├── DOMAINS.md # Symbol ownership map
│ └── skills-catalog.md # Skills catalog
├── .claude-plugin/
│ ├── plugin.json # Claude Code plugin manifest
│ └── marketplace.json # Plugin marketplace catalog
├── .mcp.json # Chrome DevTools MCP server
├── hooks/ # SessionStart hook + runner
└── LICENSE