How do I install the Unity Skill Create skill?

Run npx skillmds@latest add idocohen560/unity-skill-create in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Unity Skill Create safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Unity Skill Create?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Unity Skill Create free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Unity Skill Create?

IdoCohen560 (@idocohen560) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Unity Skill Create by idocohen560 — Agent Skill

Name: Unity Skill Create
Author: IdoCohen560

Unity Skill Create

Create a new skill using C# code. It will be added into the project as a .cs file and compiled by Unity. The skill will be available for use after compilation. It must be a partial class decorated with [McpPluginToolType]. Each tool method must be decorated with [McpPluginTool]. The class name should match the file name. All Unity API calls must use com.IvanMurzak.ReflectorNet.Utils.MainThread.Instance.Run(). Return a data model for structured output, or void for side-effect-only operations. Full sample: ```csharp #nullable enable using System; using System.ComponentModel; using com.IvanMurzak.McpPlugin; using com.IvanMurzak.ReflectorNet.Utils; using com.IvanMurzak.Unity.MCP.Editor.Utils; using com.IvanMurzak.Unity.MCP.Runtime.Data; using UnityEditor; using UnityEngine; namespace com.IvanMurzak.Unity.MCP.Editor.API { [McpPluginToolType] public partial class Tool_Sample { [McpPluginTool("sample-get", Title = "Sample / Get")] [Description("Finds a GameObject and returns its ref data.")] public GameObjectRef Get

IdoCohen560 45de7be 2.8 KB Updated Sep 17, 2026

File contents

Skill (Tool) / Create

How to Call

unity-mcp-cli run-system-tool unity-skill-create --input '{
  "path": "string_value",
  "code": "string_value"
}'

For complex input (multi-line strings, code), save the JSON to a file and use:
unity-mcp-cli run-system-tool unity-skill-create --input-file args.json
Or pipe via stdin (recommended):
unity-mcp-cli run-system-tool unity-skill-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
`path`	`string`	Yes	Path for the C# (.cs) file to be created. Sample: "Assets/Skills/MySkill.cs".
CRITICAL — Assembly Definition placement: If the project uses Assembly Definition files (.asmdef), you MUST place the script inside a folder that belongs to an assembly definition which already references all required dependencies (e.g. com.IvanMurzak.McpPlugin, UnityEditor, UnityEngine). Placing the file in the wrong assembly will cause compile errors due to missing type references. Before choosing a path, inspect existing .asmdef files with the assets-find tool to identify the correct assembly folder.
`code`	`string`	Yes	C# code for the skill tool.

Input JSON Schema

{
  "type": "object",
  "properties": {
    "path": {
      "type": "string"
    },
    "code": {
      "type": "string"
    }
  },
  "required": [
    "path",
    "code"
  ]
}

Output

This tool does not return structured output.

---name: unity-skill-createdescription: Create a new skill using C# code. It will be added into the project as a .cs file and compiled by Unity. The skill will be available for use after compilation. It must be a partial class decorated with [McpPluginToolType]. Each tool method must be decorated with [McpPluginTool]. The class name should match the file name. All Unity API calls must use com.IvanMurzak.ReflectorNet.Utils.MainThread.Instance.Run(). Return a data model for structured output, or void for side-effect-only operations. Full sample: ```csharp #nullable enable using System; using System.ComponentModel; using com.IvanMurzak.McpPlugin; using com.IvanMurzak.ReflectorNet.Utils; using com.IvanMurzak.Unity.MCP.Editor.Utils; using com.IvanMurzak.Unity.MCP.Runtime.Data; using UnityEditor; using UnityEngine; namespace com.IvanMurzak.Unity.MCP.Editor.API { [McpPluginToolType] public partial class Tool_Sample { [McpPluginTool("sample-get", Title = "Sample / Get")] [Description("Finds a GameObject and returns its ref data.")] public GameObjectRef Get---# Skill (Tool) / Create## How to Call```bashunity-mcp-cli run-system-tool unity-skill-create --input '{ "path": "string_value", "code": "string_value"}'```> For complex input (multi-line strings, code), save the JSON to a file and use:> ```bash> unity-mcp-cli run-system-tool unity-skill-create --input-file args.json> ```>> Or pipe via stdin (recommended):> ```bash> unity-mcp-cli run-system-tool unity-skill-create --input-file - <<'EOF'> {"param": "value"}> EOF> ```### TroubleshootingIf `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 ||------|------|----------|-------------|| `path` | `string` | Yes | Path for the C# (.cs) file to be created. Sample: "Assets/Skills/MySkill.cs".CRITICAL — Assembly Definition placement: If the project uses Assembly Definition files (.asmdef), you MUST place the script inside a folder that belongs to an assembly definition which already references all required dependencies (e.g. com.IvanMurzak.McpPlugin, UnityEditor, UnityEngine). Placing the file in the wrong assembly will cause compile errors due to missing type references. Before choosing a path, inspect existing .asmdef files with the assets-find tool to identify the correct assembly folder. || `code` | `string` | Yes | C# code for the skill tool. |### Input JSON Schema```json{ "type": "object", "properties": { "path": { "type": "string" }, "code": { "type": "string" } }, "required": [ "path", "code" ]}```## OutputThis tool does not return structured output.

Frequently asked questions