landing-3d

landing-3d is a skill for Claude Code from vivekkachhadiyatech/skills. It costs 204 tokens per session (3,891 once invoked), scanned A, original, MIT.

A skill for building landing pages with live 3D graphics in the browser, using one self-contained HTML file. It includes guidance for visual direction, references, device limits, and reduced motion.

In plain words
What is it for?
Use it to create scrollable landing pages with rotating objects, particle fields, or other real-time 3D scenes. It is intended for pages that need browser-based 3D rather than ordinary HTML and CSS.
Why use it?
It helps avoid 3D pages that fail on weak devices or look generic. It also provides checks for cases where 3D should be replaced with a simpler fallback.

Skill for Claude Code

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

Part of the interactive-landing-page plugin — 2 skills shipped together

Good fit Use it to create scrollable landing pages with rotating objects, particle fields, or other real-time 3D scenes. It is intended for pages that need browser-based 3D rather than ordinary HTML and CSS.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/vivekkachhadiyatech/skills/landing-3d
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 vivekkachhadiyatech/skills --skill landing-3d
Clone the repo
git clone --depth 1 https://github.com/vivekkachhadiyatech/skills

Made for: Claude Code.

Or install interactive-landing-page, the plugin that ships this one along with the rest of its 2 skills.

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 landing-3d

README.md
[![agentmods](https://agentmods.dev/badge/skills/vivekkachhadiyatech/skills/landing-3d/github.svg)](https://agentmods.dev/skills/vivekkachhadiyatech/skills/landing-3d)
Your own site
<a href="https://agentmods.dev/skills/vivekkachhadiyatech/skills/landing-3d"><img src="https://agentmods.dev/badge/skills/vivekkachhadiyatech/skills/landing-3d/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.

agentmods 80×15 button for landing-3d

Your own site · 80×15
<a href="https://agentmods.dev/skills/vivekkachhadiyatech/skills/landing-3d"><img src="https://agentmods.dev/badge/skills/vivekkachhadiyatech/skills/landing-3d.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 204 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,891 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00204 $0.03891
Opus 5 $0.00102 $0.01946
Sonnet 5 $0.00041 $0.00778
Haiku 4.5 $0.00020 $0.00389

Measured 10d ago against content hash 3bafd5be8584, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

landing-3d scanned grade A with 1 finding 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 10d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

**The signature shader beat (flagship briefs).** Once the direction wants glass/atmosphere/dense particles/a lit world, build it from `../knowledge/shader-craft.md` (dispersion glass, FBM domain-warp fog, GPGPU particles
plugins/design/interactive-landing-page/skills/landing-3d/SKILL.md · 111 lines

How it starts

The opening of the file, as written. The whole thing — 111 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Landing 3D

Build a real-time 3D/WebGL scroll landing page. Knowledge lives in ../knowledge/ — do not answer from memory. Read three-3d-webgl.md (reliability: init, fallback, perf, dispose, the self-diagnosing gate) AND three-3d-craft.md (scene craft: bloom/lighting/material/motion discipline, the ANTI-TROPE list, concept-first grounding, references/libraries). For a flagship/cinematic brief also read shader-craft.md (hand-GLSL recipes — dispersion glass, FBM fog, GPGPU particles, baked lighting, cinematic post; the highest-leverage premium move, made safe via LYGIA includes + real-GL compile) and asset-pipeline.md (bespoke/generated visual as the default hero; GLB+Draco+KTX loading; stock reads generic). Reliability makes it run; craft makes it not look generic — the recurring miss is engineering-sound but mediocre-looking 3D. This is a specialization of landing-page; reuse its art-direction, reference-grounding, and gate discipline, and add the 3D-specific gates below.

Scope check first. Real-time 3D is expensive and fails on weak devices. Use this skill ONLY when the brief genuinely needs live 3D (a rotating/explorable object, a reactive particle field, generative geometry, a scroll-driven camera through a scene). If the effect is a fixed cinematic that could be a video, STOP — that is media-asset:generate (pre-rendered), not this. scroll-world-style pre-rendered scroll video is NOT this skill.


1. Zero-assumption intake gate

Do not emit until unambiguous. Ask (with a recommended default) if any is unknown:

  • What is the 3D subject, concretely? (product mesh + source .glb? procedural geometry? particle field?) A 3D page with no real subject is decoration — reject or downgrade to landing-page.
  • Performance budget + audience devices? (desktop-first vs must-run-on-mid-mobile). This sets the DPR cap and whether the mobile fallback is poster-only.
  • Asset: is there a .glb/.gltf model (and its poly/texture budget), or is geometry generated in-code?
  • Motion appetite: idle auto-rotate only, or full scroll-driven camera/scrubbing?
  • Brand/tokens: reuse existing (scan first) or net-new?

Read the full file on GitHub · 111 lines

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. 10d ago First seen · 111 lines · 204 tokens per session scan A 3bafd5be8584

Subscribe to this mod's changes

landing-3d is a skill published in the GitHub repository vivekkachhadiyatech/skills (2 stars, last pushed 1mo ago), licensed MIT. It adds 204 tokens to every session and 3,891 once invoked, about $0.0010 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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