What is mint-threejs-skills?

A collection of instructions for building and checking browser-based Three.js projects, including games, viewers, configurators, simulations, and editors. Three.js is a JavaScript library for displaying interactive 3D graphics in a web browser.

Use it for general 3D applications, game-like experiences, model viewers, asset packs, materials, animated models, and explicitly requested Gaussian-splat worlds.

It gives the agent a defined workflow for choosing the right 3D development route, managing assets, debugging, and verifying the result.

mint-threejs-skills — Skill for Claude Code and Codex by mintdotgg

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 mintdotgg/mint-threejs-skills --skill mint-threejs-skills

Clone the repo

git clone --depth 1 https://github.com/mintdotgg/mint-threejs-skills

Made for: Claude Code, Codex.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/mintdotgg/mint-threejs-skills/mint-threejs-skills/github.svg)](https://agentmods.dev/skills/mintdotgg/mint-threejs-skills/mint-threejs-skills)

Your own site

<a href="https://agentmods.dev/skills/mintdotgg/mint-threejs-skills/mint-threejs-skills"><img src="https://agentmods.dev/badge/skills/mintdotgg/mint-threejs-skills/mint-threejs-skills/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/mintdotgg/mint-threejs-skills/mint-threejs-skills"><img src="https://agentmods.dev/badge/skills/mintdotgg/mint-threejs-skills/mint-threejs-skills.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 57 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,019 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

Socket pass 13 Jul 2026
Snyk pass 13 Jul 2026
NVIDIA SkillSpector warn 7 Sept 2026

SkillSpector: 2 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

medium Agent Snooping · line 20
Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.

Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
medium Agent Snooping · line 22
Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.

Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00057	$0.01019
Opus 5	$0.00028	$0.00509
Sonnet 5	$0.00011	$0.00204
Haiku 4.5	$0.00006	$0.00102

Measured 11d ago against content hash 873d3a092c49, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

mint-threejs-skills 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 11d ago.

The scan reads SKILL.md. This mod also ships 32 executable files (scripts/sync-mint-assets.mjs, scripts/sync-mint-assets.test.mjs, skills/threejs-app-director/assets/threejs-vite-asset-viewer/src/asset-manifest.ts, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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/mint-threejs-skills/SKILL.md · 88 lines

How it starts

The opening of the file, as written. The whole thing — 88 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Mint Three.js Skills

Mint's agent skill suite for browser-based Three.js work. It combines and adapts open source Three.js game, application, and graphics-agent workflows, generalized for 3D apps while retaining deep game workflows.

Choose A Route

Fresh request whose primary deliverable is one generated model, an animated model, a coherent model asset pack, one material, a material pack, or one explicitly requested Mint world: read references/asset-viewer.md, then use the app director. The asset is the product; the viewer is its inspection and download shell.
General 3D app, viewer, configurator, simulation, walkthrough, editor, or interactive experience: read skills/threejs-app-director/SKILL.md.
Game or game-like request with objectives, challenge, scoring, failure, progression, or game feel: read skills/threejs-game-director/SKILL.md.
Mixed experience: start with the app director, then add only the relevant game specialists.

Both routes share visual systems, interaction, debugging, QA, and references/mint-mcp-assets.md. Before the first Mint MCP write for a codebase, read references/mint-project-workspaces.md to resolve one Mint Project for the work. Projects that use Mint assets also use the durable registry in references/asset-pipeline.md.

Existing app or game context wins over asset delivery. Generate and integrate a requested asset into that project instead of scaffolding a separate viewer.

Invariants

Existing project architecture wins. For greenfield work, default to TypeScript, Vite, and Three.js modules.
Vanilla Three.js is the default; support React Three Fiber or another Three.js-based stack when the project or user chooses it.
Mint MCP is the only generated-asset production pipeline. Keep MCP calls out of browser runtime code.
Distinguish the local code project (the folder or repository being edited) from its Mint Project (the remote workspace that owns Mint chats and assets). Resolve or create the Mint Project once, persist it in mint-assets.json, and reuse it for every independent generation started for that codebase.
For every project that imports Mint files or remote world configuration, maintain a project-root mint-assets.json through scripts/sync-mint-assets.mjs. Reuse stable logical keys and preserve the existing project's asset-root conventions.
For every Three.js path that loads Mint-generated GLBs, read references/gltf-runtime-compatibility.md and use a Draco-capable shared loader. Mint-optimized GLBs are not compatible with a bare GLTFLoader.
Prefer discrete generated models and compose them in Three.js. Generate a Mint world only when the user explicitly chooses a generated environment; then read references/mint-world-splats.md.
Use procedural or user-provided assets when they are the right design choice or Mint MCP lacks the required capability. Never create a competing procedural version of a subject that Mint generated successfully.
Before verification, read references/verification-policy.md. Run its automatic minimum, ask before extended desktop/browser QA, and require a separate secondary approval for mobile QA. Its approval boundary overrides broader specialist completion gates.
Do not force game concepts such as objectives, pressure, rewards, or failure onto general 3D apps.

Read the full file on GitHub · 88 lines

Files

What ships with it

60 files 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.

11d ago First seen · 88 lines · 57 tokens per session scan A 873d3a092c49

Subscribe to this mod's changes

mint-threejs-skills is a skill published in the GitHub repository mintdotgg/mint-threejs-skills (111 stars, last pushed 1mo ago), licensed MIT. It adds 57 tokens to every session and 1,019 once invoked, about $0.0003 per session on Opus 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.

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