Guide · Agent skill
How to use the Ambient Section Particles agent skill
Updated · written with AI from the project's own documentation and checked against our catalogue data
The ambient-section-particles skill teaches an AI agent to build a decorative particle layer, such as falling petals, leaves, snow or confetti, confined to one section of a web page. It is written for front-end developers and designers who want that atmosphere without a page-wide animation or a heavy library. After following this guide you will know how to install the skill, ask for the effect in plain language, and check the code the agent produces.
Ambient Section ParticlesMengTo/Skills · MIT Download the skill Quick start
- 1Download and unzip. Download the ZIP from the page and unzip the ambient-section-particles folder into ~/.claude/skills/ or a project's .claude/skills/ directory.
- 2Or upload in Claude. In the Claude apps, open Settings, go to Capabilities and upload the skill under Skills.
- 3Confirm your project can run it. Make sure the web project lets the agent write HTML, CSS and JavaScript and that you will test in a modern browser.
- 4Describe the section and particle type. Name the section, the particle style such as petals, snow or confetti, and the mood you want the effect to support.
- 5Set limits. State any constraints, such as keeping text readable, pausing off-screen, or providing a still fallback for reduced motion.
- 6Review and test. Read the generated code, then test entry and exit pausing, narrow and wide widths, reduced motion and console errors.
What the skill makes the agent do
The skill is a set of written instructions the agent reads before writing code. Its goal is a bounded atmosphere layer: particles sit behind the content, never block clicks, and stop running when the section is off-screen. The instructions cover choosing a rendering method (canvas, DOM or inline SVG, or WebGL for very large counts), configuring motion such as gravity, wind, sway and rotation, and choosing an end mode: recycle, exit, settle or static.
The skill also covers pausing when the section is not visible or the tab is hidden, pointer disturbance that settles back naturally, and a still-image fallback for visitors who prefer reduced motion.
Install the skill (ZIP download or Claude Settings)
Download the ZIP for agent-skills/web-design/ambient-section-particles from the page. Unzip it so that the ambient-section-particles folder, containing SKILL.md, sits in one of these locations: ~/.claude/skills/ for your personal use, or .claude/skills/ inside a project for that project only.
If you use the Claude apps instead, open Settings, go to Capabilities, and upload the skill under Skills.
- Personal: ~/.claude/skills/ambient-section-particles/
- Project: .claude/skills/ambient-section-particles/ in your project root
Trigger the skill with a natural request
You do not need a special command. Describe the effect and the section it belongs to, and mention the skill by name if you want to be sure it is used. The demo prompts in the package use the form $ambient-section-particles followed by the request.
Name the particle type, the section, and any limits you care about, such as reduced motion or keeping text readable.
- Use $ambient-section-particles to add falling petals behind the hero section without competing with the headline.
- Use $ambient-section-particles to add slow snow to the pricing section, paused when it is off-screen.
- Use $ambient-section-particles to add a few branded icons drifting in the footer, with a static fallback for reduced motion.
Review the code the agent writes
The skill's reference is demo/index.html, a working example, and demo/PROMPT.md, which holds prompts for recreating or remixing it. The skill suggests a single configuration object covering count, gravity, wind, sway, speed, size, opacity, rotation, mode, pointer radius and a maximum device pixel ratio. Density is scaled by container area and clamped for mobile and low-power devices.
Before accepting the output, check that the layer has pointer-events set to none, that there is one animation loop, that observers and listeners are removed on teardown, and that the effect is hidden from assistive technology. The skill's verification list includes entry and exit pausing, background-tab recovery, 390, 768 and 1440 pixel widths, touch input, reduced motion and console errors.
What people use it for
- Falling petals or leaves behind a hero section on a landing page
- Slow snow in a seasonal promotion section, paused when scrolled away
- Sparks or confetti that appear around a call to action after a celebratory event
- Faint brand fragments or dots drifting behind a features section
- A restrained paper or dot texture in a long-form article chapter
Frequently asked questions
Is the ambient-section-particles skill free?
The skill is published under the MIT licence, as stated on the item page. Check the licence file in the downloaded package for the full terms.
Do I need to install a particle library?
No. The skill teaches the agent to write the front-end code itself, using browser features such as canvas, ResizeObserver and IntersectionObserver. You do not need to install a ready-made widget.
Does the skill run scripts or use the network?
According to the item listing, it does not run scripts and does not use the network. It is a set of instructions and a demo.
What does the project need to use it?
A web project where the agent can write HTML, CSS and JavaScript, and a modern browser environment that supports canvas, ResizeObserver and IntersectionObserver. No API keys or accounts are mentioned in the provided files.
Can I use it for a full-page animated background?
Not really. The skill deliberately keeps effects confined to one section. It only suggests WebGL for thousands of particles, depth or real 3D behaviour, so a full-page 3D scene is outside its scope.
How is this different from a ready-made particle library?
A library gives you a finished component. This skill gives the agent guidance to write custom code for one section, with pausing and reduced-motion handling built in. The output still needs review and testing.
Why does my agent not pick up the skill?
Check that the folder containing SKILL.md is inside ~/.claude/skills/ or the project's .claude/skills/, or that you uploaded it under Settings, Capabilities, Skills. Then mention the skill name in your request.
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Our verdict
Use this skill if you are a front-end developer or designer who wants a bounded, accessible particle effect for one section and is comfortable reviewing generated code. Pick a ready-made widget or a full WebGL scene instead if you need a finished component to paste in without review, or a page-wide 3D background.
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