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Script Update Or Create

CommunityPopular
IvanMurzak
script-update-or-create

Write a `.cs` script file (create or overwrite) with the provided C# code. Validates syntax via Roslyn before write — invalid code is rejected with error details and the file is left untouched. Refreshes the AssetDatabase and delivers the final result via `requestId` after Unity finishes the triggered compilation. Use 'script-read' to inspect existing content first.

Overview

PublisherIvanMurzak
RepositoryUnity-MCP
Skill namescript-update-or-create
Stars
4.4K
Forks
387
Bundled files
Instructions only
LicenseApache-2.0
Links
Skill sourceRepositoryHomepage
  • 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.

  • Self-contained

    Everything the model needs lives in the instructions — no extra files to sync.

  • Open source

    Published by IvanMurzak on GitHub. Read the source before you install it.

Installation

Install the Script Update Or Create AI skill in TypingMind to use it with any LLM, or drop it into another agent that reads SKILL.md.

1

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.

  1. Open the app and go to Plugins → Skills.
  2. Choose "Install from GitHub".
  3. Paste the skill folder URL below and confirm.
    https://github.com/IvanMurzak/Unity-MCP/tree/main/Unity-MCP-Plugin/.claude/skills/script-update-or-create
  4. 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.
2

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/IvanMurzak/Unity-MCP.git /tmp/Unity-MCP
mkdir -p .claude/skills
cp -r /tmp/Unity-MCP/Unity-MCP-Plugin/.claude/skills/script-update-or-create .claude/skills/script-update-or-create
Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Script Update Or Create 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 Script Update Or Create 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 Script Update Or Create 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.

Script / Update or Create

Updates or creates script file with the provided C# code. Does AssetDatabase.Refresh() at the end. Provides compilation error details if the code has syntax errors. Use 'script-read' tool to read existing script files first.

Inputs

  • filePath — required .cs path.
  • content — C# source. MUST pass ScriptUtils.IsValidCSharpSyntax.
  • requestId — required for the processing/delivered-later contract.

Behavior

Creates any missing parent directories, writes the file, then calls AssetDatabase.Refresh and schedules a post-compilation notification so the final response is delivered after Unity finishes the recompile.

How to Call

bash
unity-mcp-cli run-tool script-update-or-create --input '{
  "filePath": "string_value",
  "content": "string_value"
}'

For complex input (multi-line strings, code), save the JSON to a file and use:

bash
unity-mcp-cli run-tool script-update-or-create --input-file args.json

Or pipe via stdin (recommended):

bash
unity-mcp-cli run-tool script-update-or-create --input-file - <<'EOF'
{"param": "value"}
EOF

Troubleshooting

If unity-mcp-cli is not found, either install it globally (npm install -g unity-mcp-cli) or use npx unity-mcp-cli instead. Read the /unity-initial-setup skill for detailed installation instructions.

Input

NameTypeRequiredDescription
filePathstringYesThe path to the file. Sample: "Assets/Scripts/MyScript.cs".
contentstringYesC# code - content of the file.

Input JSON Schema

json
{
  "type": "object",
  "properties": {
    "filePath": {
      "type": "string"
    },
    "content": {
      "type": "string"
    }
  },
  "required": [
    "filePath",
    "content"
  ]
}

Output

This tool does not return structured output.

Frequently asked questions

What does the Script Update Or Create AI skill do?

Write a `.cs` script file (create or overwrite) with the provided C# code. Validates syntax via Roslyn before write — invalid code is rejected with error details and the file is left untouched. Refreshes the AssetDatabase and delivers the final result via `requestId` after Unity finishes the triggered compilation. Use 'script-read' to inspect existing content first.

Why use Script Update Or Create on TypingMind?

Because you install it once and use it with any model. Script Update Or Create 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 Script Update Or Create in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/IvanMurzak/Unity-MCP/tree/main/Unity-MCP-Plugin/.claude/skills/script-update-or-create. TypingMind reads its SKILL.md and installs it as a skill you can enable per chat.

Which AI models can use Script Update Or Create?

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 Script Update Or Create?

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

Is the Script Update Or Create AI skill free?

Yes. It is published on GitHub by IvanMurzak under the Apache-2.0 license. 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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