Install the "gameobject-duplicate" agent skill from https://github.com/IvanMurzak/Unity-MCP/tree/main/Unity-MCP-Plugin/.claude/skills/gameobject-duplicate into .claude/skills/gameobject-duplicate/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gameobject-duplicate", 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.
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 gameobject-duplicate -a codex
Project install goes to .agents/skills/; add -g for ~/.codex/skills/.
Install the "gameobject-duplicate" agent skill from https://github.com/IvanMurzak/Unity-MCP/tree/main/Unity-MCP-Plugin/.claude/skills/gameobject-duplicate into .agents/skills/gameobject-duplicate/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gameobject-duplicate", 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 gameobject-duplicate -a cursor
Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.
Install the "gameobject-duplicate" agent skill from https://github.com/IvanMurzak/Unity-MCP/tree/main/Unity-MCP-Plugin/.claude/skills/gameobject-duplicate into .cursor/skills/gameobject-duplicate/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gameobject-duplicate", 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.
--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 gameobject-duplicate -a gemini-cli
Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.
Install the "gameobject-duplicate" agent skill from https://github.com/IvanMurzak/Unity-MCP/tree/main/Unity-MCP-Plugin/.claude/skills/gameobject-duplicate into .gemini/skills/gameobject-duplicate/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gameobject-duplicate", 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.
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 gameobject-duplicate -a github-copilot
Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.
Install the "gameobject-duplicate" agent skill from https://github.com/IvanMurzak/Unity-MCP/tree/main/Unity-MCP-Plugin/.claude/skills/gameobject-duplicate into .github/skills/gameobject-duplicate/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gameobject-duplicate", 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 gameobject-duplicate -a opencode
OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
Install the "gameobject-duplicate" agent skill from https://github.com/IvanMurzak/Unity-MCP/tree/main/Unity-MCP-Plugin/.claude/skills/gameobject-duplicate into .opencode/skills/gameobject-duplicate/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gameobject-duplicate", 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
gameobject-duplicate
GitHub stars
4.4k
Token cost
~1.3k tokens
SKILL.md length
175 words
Files
1
Skills in repo
80
Repo updated
First seen
Licence
Apache-2.0
At a glance
Duplicate a batch of GameObjects in the currently opened Prefab or active Scene.
Game Development work in your project
SKILL.md covers Inputs, Behavior, How to Call and Input, plus 1 more section
Calls npm and npx
What it does
Gameobject Duplicate is an agent skill from IvanMurzak/Unity-MCP. Duplicate a batch of GameObjects in the currently opened Prefab or active Scene. Marks each affected scene as dirty after duplication. Use 'gameobject-find' to locate the source GameObjects first.
Its SKILL.md is about 1.3k 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. It works with 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
Game Development work in your project
Example prompts
“gameobject-find”
“/gameobject-duplicate”
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
Gameobject Duplicate loads about 1.3k tokens when it runs. Until then it costs about 54 tokens; SKILL.md has 175 words of instructions outside code blocks.
Always· name and description, kept in context so the agent knows when to use it
~54
When it runs· the whole SKILL.md, loaded when a task matches
~1.3k
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.
Download SKILL.mdSave it as .claude/skills/gameobject-duplicate/SKILL.md (or your agent's skills folder).
name
gameobject-duplicate
description
Duplicate a batch of GameObjects in the currently opened Prefab or active Scene. Marks each affected scene as dirty after duplication. Use 'gameobject-find' to locate the source GameObjects first.
GameObject / Duplicate
Duplicate GameObjects in opened Prefab or in a Scene. Use 'gameobject-find' tool to find the target GameObjects first.
Inputs
gameObjectRefs — GameObjectRefList of source GameObjects.
Behavior
Resolves every input ref on the main thread (throwing on any unresolved entry to keep the batch atomic). Sets Selection.entityIds/instanceIDs to the sources and invokes Unsupported.DuplicateGameObjectsUsingPasteboard() (Unity's canonical duplicate routine). Marks every distinct affected scene dirty so the duplicated objects are saved with the scene. Returns refs to the sources (the duplicates are reachable via the post-call Selection).
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
gameObjectRefs
any
Yes
Array of GameObjects in opened Prefab or in the active Scene.
Input JSON Schema
json
{
"type": "object",
"properties": {
"gameObjectRefs": {
"$ref": "#/$defs/AIGD.GameObjectRefList"
}
},
"$defs": {
"AIGD.GameObjectRef": {
"type": "object",
"properties": {
"instanceID": {
"type": "integer",
"description": "instanceID of the UnityEngine.Object. If it is '0' and 'path', 'name', 'assetPath' and 'assetGuid' is not provided, empty or null, then it will be used as 'null'. Priority: 1 (Recommended)"
},
"path": {
"type": "string",
"description": "Path of a GameObject in the hierarchy Sample 'character/hand/finger/particle'. Priority: 2."
},
"name": {
"type": "string",
"description": "Name of a GameObject in hierarchy. Priority: 3."
},
"assetType": {
"$ref": "#/$defs/System.Type",
"description": "Type of the asset."
},
"assetPath": {
"type": "string",
"description": "Path to the asset within the project. Starts with 'Assets/'"
},
"assetGuid": {
"type": "string",
"description": "Unique identifier for the asset."
}
},
"required": [
"instanceID"
],
"description": "Find GameObject in opened Prefab or in the active Scene."
},
"System.Type": {
"type": "string"
},
"AIGD.GameObjectRefList": {
"type": "array",
"items": {
"$ref": "#/$defs/AIGD.GameObjectRef",
"description": "Find GameObject in opened Prefab or in the active Scene."
},
"description": "Array of GameObjects in opened Prefab or in the active Scene."
}
},
"required": [
"gameObjectRefs"
]
}
Output
Output JSON Schema
json
{
"type": "object",
"properties": {
"result": {
"$ref": "#/$defs/System.Collections.Generic.List(AIGD.GameObjectRef)"
}
},
"$defs": {
"AIGD.GameObjectRef": {
"type": "object",
"properties": {
"instanceID": {
"type": "integer",
"description": "instanceID of the UnityEngine.Object. If it is '0' and 'path', 'name', 'assetPath' and 'assetGuid' is not provided, empty or null, then it will be used as 'null'. Priority: 1 (Recommended)"
},
"path": {
"type": "string",
"description": "Path of a GameObject in the hierarchy Sample 'character/hand/finger/particle'. Priority: 2."
},
"name": {
"type": "string",
"description": "Name of a GameObject in hierarchy. Priority: 3."
},
"assetType": {
"$ref": "#/$defs/System.Type",
"description": "Type of the asset."
},
"assetPath": {
"type": "string",
"description": "Path to the asset within the project. Starts with 'Assets/'"
},
"assetGuid": {
"type": "string",
"description": "Unique identifier for the asset."
}
},
"required": [
"instanceID"
],
"description": "Find GameObject in opened Prefab or in the active Scene."
},
"System.Type": {
"type": "string"
},
"System.Collections.Generic.List(AIGD.GameObjectRef)": {
"type": "array",
"items": {
"$ref": "#/$defs/AIGD.GameObjectRef",
"description": "Find GameObject in opened Prefab or in the active Scene."
}
}
},
"required": [
"result"
]
}
Gameobject Duplicate 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.
Gameobject Duplicate compared with similar skills
Skill
Stars
Used in
Tokens
Auto-check
Licence
Repo updated
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Duplicate a batch of GameObjects in the currently opened Prefab or active Scene. Gameobject Duplicate is an agent skill from IvanMurzak/Unity-MCP. Duplicate a batch of GameObjects in the currently opened Prefab or active Scene.
When should I use Gameobject Duplicate?
Gameobject Duplicate fits situations like: game Development work in your project.
How do I install Gameobject Duplicate in Claude Code?
Run `npx skills add IvanMurzak/Unity-MCP --skill gameobject-duplicate -a claude-code`. Or copy the skill folder (Unity-MCP-Plugin/.claude/skills/gameobject-duplicate in IvanMurzak/Unity-MCP) into .claude/skills/gameobject-duplicate in your project. Claude Code loads it when a task matches its description.
How do I install Gameobject Duplicate in Codex?
Run `npx skills add IvanMurzak/Unity-MCP --skill gameobject-duplicate -a codex`. Or copy the skill folder (Unity-MCP-Plugin/.claude/skills/gameobject-duplicate in IvanMurzak/Unity-MCP) into .agents/skills/gameobject-duplicate in your project. Codex loads it when a task matches its description.
Can I use Gameobject Duplicate 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 gameobject-duplicate -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/gameobject-duplicate, .gemini/skills/gameobject-duplicate, .github/skills/gameobject-duplicate and .opencode/skills/gameobject-duplicate in your project.
What does Gameobject Duplicate need to run?
Going by SKILL.md and its folder, Gameobject Duplicate needs the command-line tools its instructions call (npm and npx). Our summary lists: Node.js.
Does Gameobject Duplicate 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 Gameobject Duplicate 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 Gameobject Duplicate use?
Gameobject Duplicate 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 Gameobject Duplicate use?
About 1.3k tokens (SKILL.md is roughly 5.3k 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 Gameobject Duplicate?
Skills that share tags, products or a category with Gameobject Duplicate: Sprite Gen (aldegad/sprite-gen, 2.6k stars), Multi Account Isolation (antibrow/anti-detect-browser-skills, 932 stars), Blockbench Plugins (jasonjgardner/blockbench-mcp-plugin, 491 stars) and Unreal Blueprint Authoring (flopperam/unreal-engine-mcp, 1.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Gameobject Duplicate?
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.
