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cesiumjs-models-particles

cesiumjs-models-particles is a skill for Claude Code from CesiumGS/cesiumjs-skills. It costs 87 tokens per session (6,004 once invoked), scanned A, original, Apache-2.0.

A reference for working with 3D models and particle effects in CesiumJS, a JavaScript library for interactive 3D globes and maps. It covers glTF and GLB files, which are formats for 3D assets, plus animations, model parts, and effects such as fire or rain.

In plain words
What is it for?
Use it to load compressed or CAD-style models, control model nodes and animations, render edges, and create particle systems with different emitters.
Why use it?
It helps developers choose the right CesiumJS objects and methods for loading, displaying, animating, styling, and positioning these visuals.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the cesiumjs-skills plugin — 15 skills, 1 hook, 1 MCP server shipped together

not rated 194repo +1 changed 1mo ago A scan SkillSpector: pass 87 tokens original Apache-2.0

Good fit Use it to load compressed or CAD-style models, control model nodes and animations, render edges, and create particle systems with different emitters.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/cesiumgs/cesiumjs-skills/cesiumjs-models-particles
View source ↗ CesiumGS/cesiumjs-skills
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add CesiumGS/cesiumjs-skills --skill cesiumjs-models-particles
Clone the repo
git clone --depth 1 https://github.com/CesiumGS/cesiumjs-skills

Made for: Claude Code.

Or install cesiumjs-skills, the plugin that ships this one along with the rest of its 15 skills, 1 hook, 1 MCP server.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for cesiumjs-models-particles

README.md
[![agentmods](https://agentmods.dev/badge/skills/cesiumgs/cesiumjs-skills/cesiumjs-models-particles/github.svg)](https://agentmods.dev/skills/cesiumgs/cesiumjs-skills/cesiumjs-models-particles)
Your own site
<a href="https://agentmods.dev/skills/cesiumgs/cesiumjs-skills/cesiumjs-models-particles"><img src="https://agentmods.dev/badge/skills/cesiumgs/cesiumjs-skills/cesiumjs-models-particles/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

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Your own site · 80×15
<a href="https://agentmods.dev/skills/cesiumgs/cesiumjs-skills/cesiumjs-models-particles"><img src="https://agentmods.dev/badge/skills/cesiumgs/cesiumjs-skills/cesiumjs-models-particles.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 87 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 6,004 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00087 $0.06004
Opus 5.5 $0.00035 $0.02402
Sonnet 5.5 $0.00017 $0.01201
Haiku 4.5 $0.00009 $0.00600

Measured 1mo ago against content hash d7a34ac7ee20, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

cesiumjs-models-particles scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/cesiumjs-models-particles/SKILL.md · 585 lines

How it starts

The opening of the file, as written. The whole thing — 585 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CesiumJS Models, glTF & Particle Effects

Version baseline: CesiumJS v1.144.

Quick Reference

Class Purpose
Model Low-level glTF/GLB primitive; positioned via modelMatrix
ModelAnimation Active animation instance on a model
ModelAnimationCollection Collection at model.activeAnimations
ModelNode Named node with modifiable transform
ModelFeature Per-feature styling/picking for feature-ID models
EdgeDisplayMode Controls draft glTF edge-visibility rendering on Model/Cesium3DTileset
ParticleSystem Billboard-based particle manager (fire, smoke, rain)
Particle Single particle with position, velocity, life
ParticleBurst Scheduled burst of particles
BoxEmitter / CircleEmitter Emit within box volume / flat disk
ConeEmitter / SphereEmitter Emit from cone tip / within sphere

The Entity API exposes models through ModelGraphics (see cesiumjs-entities). The Primitive API uses Model.fromGltfAsync for full control over modelMatrix, animations, and node transforms.

Loading a glTF/GLB Model

Always use the async factory -- never call the constructor directly.

import { Model, Cartesian3, Transforms, HeadingPitchRoll, Math as CesiumMath } from "cesium";

const model = await Model.fromGltfAsync({ url: "path/to/model.glb" });
viewer.scene.primitives.add(model);

Public Sample Models

CesiumJS ships sample models usable without ion tokens:

https://raw.githubusercontent.com/CesiumGS/cesium/main/Apps/SampleData/models/CesiumAir/Cesium_Air.glb
https://raw.githubusercontent.com/CesiumGS/cesium/main/Apps/SampleData/models/CesiumMan/Cesium_Man.glb
https://raw.githubusercontent.com/CesiumGS/cesium/main/Apps/SampleData/models/CesiumMilkTruck/CesiumMilkTruck.glb

CesiumJS 1.143 decodes KHR_meshopt_compression automatically, including the v1 attribute codec and COLOR filter. Do not import a decoder or private loader helper. When loading compressed glTF, CAD-style lines/points/edges, or constant-LOD textures, read REFERENCE.md for the complete support and authoring matrix. The same loader behavior applies to glTF content inside 3D Tiles.

Read the full file on GitHub · 585 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago Changed · +154 lines d7a34ac7ee20
  2. 2mo ago First seen · 431 lines · 87 tokens per session scan A bc9f0f62e1fb

Subscribe to this mod's changes

cesiumjs-models-particles is a skill published in the GitHub repository CesiumGS/cesiumjs-skills (194 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 87 tokens to every session and 6,004 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

FrontendGame developmentclaude-code-pluginclaude-code-skillscodex-skillsgithub-copilot-skills
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