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:

1. Type /plugin and press Enter
2. Select Add Marketplace
3. Enter CesiumGS/cesiumjs-skills
4. Once the marketplace is added, type /plugin again
5. Select Install Plugin
6. 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.

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Table of Contents

• Skills Catalog
• Domain Mapping
• Compatibility
• Repository Layout
• License

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

License

Apache 2.0