Agent skill

Script Update Or Create

Write a .cs script file (create or overwrite) with the provided C code.

Apache-2.0Auto-check passedGame Development

Install Script Update Or Create

skills CLI

$ npx skills add IvanMurzak/Unity-MCP --skill script-update-or-create -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install IvanMurzak/Unity-MCP script-update-or-create --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/IvanMurzak/Unity-MCP.git skills-src && mkdir -p .claude/skills && cp -r skills-src/Unity-MCP-Plugin/.claude/skills/script-update-or-create .claude/skills/script-update-or-create && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "script-update-or-create" agent skill from https://github.com/IvanMurzak/Unity-MCP/tree/main/Unity-MCP-Plugin/.claude/skills/script-update-or-create into .claude/skills/script-update-or-create/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "script-update-or-create", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/IvanMurzak/Unity-MCP/tree/main/Unity-MCP-Plugin/.claude/skills/script-update-or-create

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add IvanMurzak/Unity-MCP --skill script-update-or-create -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install IvanMurzak/Unity-MCP script-update-or-create --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/IvanMurzak/Unity-MCP.git skills-src && mkdir -p .agents/skills && cp -r skills-src/Unity-MCP-Plugin/.claude/skills/script-update-or-create .agents/skills/script-update-or-create && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "script-update-or-create" agent skill from https://github.com/IvanMurzak/Unity-MCP/tree/main/Unity-MCP-Plugin/.claude/skills/script-update-or-create into .agents/skills/script-update-or-create/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "script-update-or-create", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add IvanMurzak/Unity-MCP --skill script-update-or-create -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install IvanMurzak/Unity-MCP script-update-or-create --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/IvanMurzak/Unity-MCP.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/Unity-MCP-Plugin/.claude/skills/script-update-or-create .cursor/skills/script-update-or-create && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "script-update-or-create" agent skill from https://github.com/IvanMurzak/Unity-MCP/tree/main/Unity-MCP-Plugin/.claude/skills/script-update-or-create into .cursor/skills/script-update-or-create/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "script-update-or-create", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/IvanMurzak/Unity-MCP.git --path Unity-MCP-Plugin/.claude/skills/script-update-or-create

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add IvanMurzak/Unity-MCP --skill script-update-or-create -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install IvanMurzak/Unity-MCP script-update-or-create --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/IvanMurzak/Unity-MCP.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/Unity-MCP-Plugin/.claude/skills/script-update-or-create .gemini/skills/script-update-or-create && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "script-update-or-create" agent skill from https://github.com/IvanMurzak/Unity-MCP/tree/main/Unity-MCP-Plugin/.claude/skills/script-update-or-create into .gemini/skills/script-update-or-create/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "script-update-or-create", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install IvanMurzak/Unity-MCP script-update-or-create

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add IvanMurzak/Unity-MCP --skill script-update-or-create -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/IvanMurzak/Unity-MCP.git skills-src && mkdir -p .github/skills && cp -r skills-src/Unity-MCP-Plugin/.claude/skills/script-update-or-create .github/skills/script-update-or-create && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "script-update-or-create" agent skill from https://github.com/IvanMurzak/Unity-MCP/tree/main/Unity-MCP-Plugin/.claude/skills/script-update-or-create into .github/skills/script-update-or-create/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "script-update-or-create", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add IvanMurzak/Unity-MCP --skill script-update-or-create -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install IvanMurzak/Unity-MCP script-update-or-create --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/IvanMurzak/Unity-MCP.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/Unity-MCP-Plugin/.claude/skills/script-update-or-create .opencode/skills/script-update-or-create && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "script-update-or-create" agent skill from https://github.com/IvanMurzak/Unity-MCP/tree/main/Unity-MCP-Plugin/.claude/skills/script-update-or-create into .opencode/skills/script-update-or-create/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "script-update-or-create", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: script-update-or-create
GitHub stars: 4.4k
Used in: 1 other repo
Token cost: ~580 tokens
SKILL.md length: 182 words
Files: 1
Skills in repo: 80
Repo updated: Oct 4, 2026
First seen: Oct 7, 2026
Licence: Apache-2.0

At a glance

Write a .cs script file (create or overwrite) with the provided C code.

Tasks that involve Game development
SKILL.md covers Inputs, Behavior, How to Call and Input, plus 1 more section
Calls npm and npx

What it does

Script Update Or Create is an agent skill from IvanMurzak/Unity-MCP. 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.

Its SKILL.md is about 580 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Game Development, covering Game development. It works with C# and Model Context Protocol. The repository describes itself as: AI Skills, MCP Tools, and CLI for Unity Engine. Full AI develop and test loop. Use cli for quick setup. Efficient token usage, advanced tools. Any C method may be turned into a… The licence is Apache-2.0.

When your agent uses it

Tasks that involve Game development

Example prompts

“script-read”
“/script-update-or-create”

Requirements

Node.js

What it can do on your machine

Read from SKILL.md and the folder at commit 4c8056f. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
- npm
- npx
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use npm and npx, which can reach the network depending on how they are called.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Script Update Or Create loads about 580 tokens when it runs. Until then it costs about 98 tokens; SKILL.md has 182 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~98
When it runs · the whole SKILL.md, loaded when a task matches: ~580

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from IvanMurzak/Unity-MCP at commit 4c8056f, republished under its Apache-2.0 licence (© IvanMurzak). 182 words, ~580 tokens.

Download SKILL.mdSave it as .claude/skills/script-update-or-create/SKILL.md (or your agent's skills folder).

name: script-update-or-create
description: 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.

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

Name	Type	Required	Description
`filePath`	`string`	Yes	The path to the file. Sample: "Assets/Scripts/MyScript.cs".
`content`	`string`	Yes	C# 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.

Files

Just SKILL.md in Unity-MCP-Plugin/.claude/skills/script-update-or-create of IvanMurzak/Unity-MCP.

Open the folder on GitHubat commit 4c8056f

Used in 1 other repository

We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in IvanMurzak/Unity-MCP, which our catalogue first saw on October 7, 2026.

majiayu000/claude-skill-registryskills/bash/script-update-or-create

Compare with similar skills

Script Update Or Create next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Script Update Or Create compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Script Update Or Create this skillIvanMurzak/Unity-MCP	4.4k	1 repos	~580	Automated safety check: Pass	Apache-2.0	4 days ago
Unity PluginTomLeeLive/openclaw-unity-plugin	107	—	~5.1k	Automated safety check: Pass	Apache-2.0	29 days ago
Sprite Genaldegad/sprite-gen	2.6k	—	~4.5k	Automated safety check: Pass	Apache-2.0	yesterday
Unreal Blueprint Authoringflopperam/unreal-engine-mcp	1.1k	—	~1.6k	Automated safety check: Pass	None	3 mo ago
Locus Unity BridgeMisaka-Mikoto-Tech/agent-skills	275	—	~4k	Automated safety check: Pass	MIT	17 days ago
MCP DriverRandallLiuXin/GodotMaker	549	1 repos	~1.1k	Automated safety check: Pass	Custom licence	21 days ago

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Questions about Script Update Or Create

What does Script Update Or Create do?

Write a .cs script file (create or overwrite) with the provided C code. Script Update Or Create is an agent skill from IvanMurzak/Unity-MCP.cs script file (create or overwrite) with the provided C code.

When should I use Script Update Or Create?

Script Update Or Create fits situations like: tasks that involve Game development.

How do I install Script Update Or Create in Claude Code?

Run `npx skills add IvanMurzak/Unity-MCP --skill script-update-or-create -a claude-code`. Or copy the skill folder (Unity-MCP-Plugin/.claude/skills/script-update-or-create in IvanMurzak/Unity-MCP) into .claude/skills/script-update-or-create in your project. Claude Code loads it when a task matches its description.

How do I install Script Update Or Create in Codex?

Run `npx skills add IvanMurzak/Unity-MCP --skill script-update-or-create -a codex`. Or copy the skill folder (Unity-MCP-Plugin/.claude/skills/script-update-or-create in IvanMurzak/Unity-MCP) into .agents/skills/script-update-or-create in your project. Codex loads it when a task matches its description.

Can I use Script Update Or Create in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add IvanMurzak/Unity-MCP --skill script-update-or-create -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/script-update-or-create, .gemini/skills/script-update-or-create, .github/skills/script-update-or-create and .opencode/skills/script-update-or-create in your project.

What does Script Update Or Create need to run?

Going by SKILL.md and its folder, Script Update Or Create needs the command-line tools its instructions call (npm and npx). Our summary lists: Node.js.

Does Script Update Or Create access the network?

SKILL.md contains no URLs. Its commands use npm and npx, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Script Update Or Create safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Script Update Or Create use?

Script Update Or Create is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Script Update Or Create use?

About 580 tokens (SKILL.md is roughly 2.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Script Update Or Create?

Skills that share tags, products or a category with Script Update Or Create: Unity Plugin (TomLeeLive/openclaw-unity-plugin, 107 stars), Sprite Gen (aldegad/sprite-gen, 2.6k stars), Unreal Blueprint Authoring (flopperam/unreal-engine-mcp, 1.1k stars) and Locus Unity Bridge (Misaka-Mikoto-Tech/agent-skills, 275 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Script Update Or Create?

IvanMurzak (a GitHub user) maintains it in IvanMurzak/Unity-MCP, which has 4,398 GitHub stars. The repository holds 80 skills in this directory. The repository was last updated on October 4, 2026.

Source: IvanMurzak/Unity-MCP on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Script Update Or Create

Facts

At a glance

What it does

When your agent uses it

Example prompts

Requirements

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Script / Update or Create

Inputs

Behavior

How to Call

Troubleshooting

Input

Input JSON Schema

Output

Files

Used in 1 other repository

Compare with similar skills

Similar skills

More from IvanMurzak/Unity-MCP

Related

Questions about Script Update Or Create