Asset Transformer Toolkit

OrganizationPopular

Unity-Technologies

asset-transformer-toolkit

Imports 3D models and point clouds with Asset Transformer Toolkit (formerly Pixyz), and creates, edits, and runs RuleSets, Actions, and LODs. Use for Pixyz or Asset Transformer imports, RuleSets, or ImporterScriptableObjects. Requires toolkit 4.0+.

Overview

Publisher	Unity-Technologies
Repository	`skills`
Skill name	`asset-transformer-toolkit`
Stars	1K
Forks	61
Bundled files	7
Links	Skill source Repository

Markdown instructions
A SKILL.md file the model loads on demand, so it only costs tokens when a request actually matches.
Works with any LLM
AI skills are plain Markdown, not provider-specific code, so this works with GPT, Claude, Gemini, Grok, or a local model.
7 bundled files
Scripts, templates, and references the model can read while it works. Files are read-only and never executed.
Open source
Published by Unity-Technologies on GitHub. Read the source before you install it.

Installation

Install the Asset Transformer Toolkit AI skill in TypingMind to use it with any LLM, or drop it into another agent that reads SKILL.md.

Install in TypingMind

TypingMind installs a skill straight from its GitHub folder — it reads SKILL.md, bundles the resource files, and stores the result locally.

Open the app and go to Plugins → Skills.
Choose "Install from GitHub".
Paste the skill folder URL below and confirm.
https://github.com/Unity-Technologies/skills/tree/main/skills/asset-transformer-toolkit
Enable the skill in any chat where you want it available.

Plugins → Skills → Add skill → From GitHub URL, then paste the folder URL and press Continue.

Install in another agent

Any agent that reads the Agent Skills format can use this skill — copy the folder into that agent's skills directory.

Claude Code — .claude/skills

git clone --depth 1 https://github.com/Unity-Technologies/skills.git /tmp/skills
mkdir -p .claude/skills
cp -r /tmp/skills/skills/asset-transformer-toolkit .claude/skills/asset-transformer-toolkit

Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Asset Transformer Toolkit in any TypingMind chat and the model takes it from there. Its name and description sit in the system prompt, and the moment a request matches, the model loads the full instructions itself — you never invoke it by hand, and it costs no tokens until it is actually used.

The model loads Asset Transformer Toolkit on its own as soon as a request matches it.

Works with any AI model

AI skills are plain Markdown instructions rather than provider-specific code, so Asset Transformer Toolkit is not tied to the model it was written for. Install it once in TypingMind and use it with GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Llama, or a local model you run yourself — all on your own API keys.

Loaded only when it is needed
The system prompt carries just the name and description. The instructions are fetched on the first matching request, so an idle skill costs nothing.
Switch models mid-chat
Because the skill is instructions rather than code, changing model does not break it — the next model reads the same SKILL.md.

Skill instructions

This is the SKILL.md content the model loads. Read it before installing — a skill is instructions your model will follow.

Before you start: check the package version

This skill needs Asset Transformer Toolkit 4.0.0 or later (com.unity.industry.toolkit). Earlier versions don't have the ATTAssistantUtilities API every workflow below relies on.

Read the resolved version of com.unity.industry.toolkit from Packages/packages-lock.json (fall back to Packages/manifest.json).
Not installed: tell the user this workflow needs Asset Transformer Toolkit 4.0 or later, which is an entitled Unity package they may need access to through their Unity plan, and stop. Don't add it to the manifest yourself.
Installed below 4.0.0: tell the user which version you found and that 4.0 or later is required, and ask before upgrading. Don't fall back to older APIs, raw C# against internal types, or reflection.
4.0.0 or later: continue.

API Reference

Tool functions are provided by Unity.Pixyz.Plugin4Unity.Editor.AI.ATTAssistantUtilities. They are documented inline in each reference file below alongside the classes they operate on.

Technical Notes

Pixyz Plugin is the former name of Asset Transformer Toolkit. Prefer using the term 'Asset Transformer Toolkit' when addressing the user, unless the user is using the term 'Pixyz' Most classes and code are in the Unity.Pixyz.Plugin4Unity.Editor assembly. Asset Transformer Toolkit is NOT the same thing as Asset Transformer Studio/Pixyz Studio. NEVER rely on information about Asset Transformer Studio.

Importers

Asset Transformer Toolkit can import 3D file from outside the project. When modifying Importers, NEVER assume it should be immediately followed by a reimport. The import process can be very long, so it must only be launched when the user requests it. Modify fields in Importers using the ScriptableObject API. NEVER use reflection to access or modify Importer fields — reflection is not available. To create a Pixyz/Asset Transformer Toolkit Importer for importing a file, or to reimport a model using an existing ImporterScriptableObject, read references/create-importer

RuleSets and Actions

Read references/rulesets-and-actions Read api-docs/ruleset-api when the RuleSet API is needed. Read api-docs/rule-api when the Rule API is needed. Read api-docs/ruleblock-api when the RuleBlock API is needed, including ActionBase.Id for constructing RuleBlock instances.

Levels of Detail

Read references/lods

Bundled files

The model reads these on demand while the skill is loaded. They are exposed as readable files and are never executed.

Frequently asked questions

What does the Asset Transformer Toolkit AI skill do?

Why use Asset Transformer Toolkit on TypingMind?

Because you install it once and use it with any model. Asset Transformer Toolkit is plain Markdown rather than provider-specific code, so the same skill runs on GPT-5, Claude, Gemini, Grok, or a local model — and you can switch model mid-chat without it breaking. TypingMind runs on your own API keys, so you pay providers directly instead of a per-seat subscription, and your skills and chats stay in your own storage.

How do I install Asset Transformer Toolkit in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/Unity-Technologies/skills/tree/main/skills/asset-transformer-toolkit. TypingMind reads its SKILL.md and bundles its files and installs it as a skill you can enable per chat.

Which AI models can use Asset Transformer Toolkit?

Any model you connect in TypingMind. AI skills are plain Markdown instructions rather than provider-specific code, so GPT, Claude, Gemini, Grok, and local models can all load this skill when a request matches it.

How many AI models can I use with Asset Transformer Toolkit?

As many as you like. As long as a model supports skills, you can use Asset Transformer Toolkit with it — GPT, Claude, Gemini, Grok, DeepSeek, Mistral, Llama and more — all on TypingMind with your own API keys.

Is the Asset Transformer Toolkit AI skill free?

It is published on GitHub by Unity-Technologies. Check the repository for licensing terms. You only pay your own AI provider for the tokens you use.

What are AI skills?

An AI skill is a reusable instruction bundle that teaches an AI model how to do one specific task. It follows the open Agent Skills format: a SKILL.md file with a name and description, plus any scripts, templates or reference files the model may need. The model reads the instructions only when your request matches the skill, so an installed skill costs nothing until it is used.

How are AI skills different from plugins or MCP servers?

A plugin or MCP server gives a model new tools to call — code that runs somewhere and returns a result. An AI skill gives the model knowledge and process instead: how to approach a task, which steps to follow, what good output looks like. Skills are plain Markdown, so they need no server, no API key and no runtime, and they work with any model.

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Overview

Installation

Install in TypingMind

Install in another agent

Use it in TypingMind

Works with any AI model

Skill instructions

Before you start: check the package version

API Reference

Technical Notes

Importers

RuleSets and Actions

Levels of Detail

Bundled files

Frequently asked questions

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