Guide · Agent skill
How to use the WebGL Background Grid agent skill
Updated · written with AI from the project's own documentation and checked against our catalogue data
The background-grid-webgl skill is a set of instructions that teaches an AI coding agent to build an animated, atmospheric 3D background for a web page: a receding perspective grid of thin lines, a faint field of floating particles, slow forward drift, and a calm camera shift that follows the mouse. This guide covers what the skill changes, how to install it, how to ask for it, and what to watch for. By the end you will be able to add the skill to your agent and request a tuned WebGL background for a landing page or hero section.
WebGL Background GridMengTo/Skills · MIT Download the skill Quick start
- 1Download and unzip. Download the skill ZIP from this page and unzip the background-grid-webgl folder.
- 2Place the folder. Move it into ~/.claude/skills/ for personal use, or into your project's .claude/skills/ folder.
- 3Or upload it in the apps. In the Claude apps, go to Settings → Capabilities → Skills and upload the skill instead.
- 4Describe the background. Ask for a perspective WebGL grid background and name the page and feel you want.
- 5Review the output. Open the generated page and check the grid fade, particle density and parallax against the skill's guidance.
- 6Tune the knobs. Ask for changes to density, fade, drift speed, camera height or colour using the tuning knobs in the skill.
What the skill makes the agent do
An agent skill is a folder of instructions (a SKILL.md file plus optional examples) that an AI agent reads when your request matches the skill's purpose. This one is scoped to a single layer: the background behind your page. It does not write your page layout, copy or other content.
The skill guides the agent toward real WebGL, typically using the Three.js library, to render a large ground-plane grid viewed from an elevated camera so the lines recede toward the horizon. The far lines fade with distance, the background is dark, and the lines are thin and understated rather than a loud retro neon floor.
- A perspective grid of thin lines whose opacity fades with distance
- A sparse, low-opacity additive particle field for depth
- Slow forward drift or repeated positional cycling of the grid
- Mouse-responsive camera parallax that is calm and damped
- Use of the design's accent color only as a restrained highlight
Install the skill (ZIP download or Claude apps upload)
Download the skill ZIP from this page and unzip it. The folder contains SKILL.md, plus demo/index.html, demo/PROMPT.md and demo/source.json.
For a personal install, unzip the folder into ~/.claude/skills/. To scope it to one project, unzip it into that project's .claude/skills/ folder instead.
If you use the Claude apps, you can instead upload the skill under Settings → Capabilities → Skills.
- Personal: ~/.claude/skills/background-grid-webgl/
- Single project: .claude/skills/background-grid-webgl/ inside your project
- Claude apps: Settings → Capabilities → Skills → upload
Trigger the skill with a natural request
You do not need a special command. Describe the background you want and mention the effect, and the agent should match the request to the skill. The demo prompt file shows the pattern of naming the skill explicitly with $background-grid-webgl.
Be specific about the page you are building and the feel you want. Mention the primary colour of the design if you have one, because the skill uses it sparingly for glow and particles.
- Explicit: Use $background-grid-webgl to create a responsive standalone HTML hero with a perspective grid background.
- Natural: Add a subtle tech grid background behind my landing page hero, with floating dust particles and gentle mouse parallax.
- Refinement: Make the grid fade out faster toward the horizon and slow the drift down.
Use the included demo as a reference
The package includes demo/index.html, which the demo prompt describes as the visual and interaction reference. You can ask the agent to recreate its look and behaviour as a complete responsive HTML document, or to borrow its structure for your own page.
Look at the tuning knobs the skill names when you want to adjust results: grid density (plane size, divisions, line spacing), fade, motion speeds and camera smoothing, height, distance, tilt and parallax strength, and colour.
What the skill needs and how it stays safe
The skill needs Three.js or an equivalent WebGL rendering library, and a web page or project where the agent can write HTML and JavaScript. The source does not list other requirements.
The skill does not run scripts and does not use the network, according to its listing. It is a set of written instructions and a demo file. Still, review any code the agent writes before deploying it, as you would with any generated code.
- Requires: Three.js or equivalent WebGL library, and a project where HTML and JavaScript can be written
- Runs scripts: no
- Uses network: no
Tips for a tasteful result
Keep the grid behind content. The skill warns against thick linework, high-contrast grids, dense particles or fog, and fast or aggressive mouse tracking, because these compete with foreground text.
Check performance on your own target devices. The skill files do not discuss performance budgets or fallbacks for weaker hardware, so you may need to ask the agent for a lighter version.
- Ask for a neutral white or cool grey grid if your design has no strong accent
- Ask for slower drift if the background distracts from copy
- Test on a low-power laptop or phone before shipping
What people use it for
- A tech or sci-fi style hero background for a web design portfolio
- A subtle animated 3D backdrop behind a SaaS landing page headline
- A starting point for a WebGL background the developer later tunes by hand
- A standalone HTML motion study that uses the included demo as a reference
Frequently asked questions
How do I install the background-grid-webgl skill?
Download the skill ZIP from this page and unzip it. Put the folder in ~/.claude/skills/ for personal use, or in a project's .claude/skills/ folder for one project. In the Claude apps you can instead upload it under Settings → Capabilities → Skills.
What does the background-grid-webgl skill need?
It needs Three.js or an equivalent WebGL rendering library, and a web page or project where the agent can write HTML and JavaScript. Its listing says it runs no scripts and uses no network.
Is the background-grid-webgl skill free?
The skill is published under the MIT licence, according to its listing. Check the licence file in the package for the full terms.
Can the skill build a full website layout?
No. The skill is scoped only to the background layer. It does not handle full page layouts, copy or other non-background elements.
Why does the agent avoid bright neon grids?
The skill's guidance steers away from bright synthwave neon grids unless you explicitly ask for that style, and it recommends thin lines and restrained glow.
Will this work on slow phones or laptops?
The skill files do not discuss performance budgets or fallbacks for low-power devices. Test the result on your target hardware and ask the agent for a lighter version if needed.
What are alternatives to this skill?
The skill's files do not compare it with other tools, so this page cannot make that comparison. You can still write a Three.js background by hand or ask an agent without the skill, but the skill's specific guidance on fade, parallax and restraint is what it adds.
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Our verdict
Choose this skill if you want a calm, tech-style 3D background for a hero or landing page and plan to tune it yourself. Pick something else if you need a loud neon look, a full page layout generator, or a background proven to run on low-power devices, since the files do not cover those cases.
Download the skill