Agent skill

Assets Prefab Instantiate

by IvanMurzak in IvanMurzak/Unity-MCP

Instantiate a prefab into the currently active scene at an optional position/rotation/scale, parented under an optional scene GameObject path.

Apache-2.0Auto-check passedGame Development

Install Assets Prefab Instantiate

skills CLI
$ npx skills add IvanMurzak/Unity-MCP --skill assets-prefab-instantiate -a claude-code

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

GitHub CLI
$ gh skill install IvanMurzak/Unity-MCP assets-prefab-instantiate --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/assets-prefab-instantiate .claude/skills/assets-prefab-instantiate && 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/

Facts

Skill name
assets-prefab-instantiate
GitHub stars
4.4k
Token cost
~1.2k tokens
SKILL.md length
207 words
Files
1
Skills in repo
80
Repo updated
First seen
Licence
Apache-2.0

At a glance

Instantiate a prefab into the currently active scene at an optional position/rotation/scale, parented under an optional scene GameObject path.

  • Game Development work in your project
  • SKILL.md covers Inputs, How to Call, Input and Output
  • Calls npm and npx

What it does

Assets Prefab Instantiate is an agent skill from IvanMurzak/Unity-MCP. Instantiate a prefab into the currently active scene at an optional position/rotation/scale, parented under an optional scene GameObject path. Use 'assets-find' to locate the prefab asset first.

Its SKILL.md is about 1.2k 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

  • “assets-find”
  • “/assets-prefab-instantiate”

Requirements

  • Node.js

What it can do on your machine

Read from SKILL.md and the folder at commit 84319d7. 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

Assets Prefab Instantiate loads about 1.2k tokens when it runs. Until then it costs about 55 tokens; SKILL.md has 207 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~55
When it runs · the whole SKILL.md, loaded when a task matches
~1.2k

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 84319d7, republished under its Apache-2.0 licence (© IvanMurzak). 207 words, ~1,152 tokens.

Download SKILL.mdSave it as .claude/skills/assets-prefab-instantiate/SKILL.md (or your agent's skills folder).
name
assets-prefab-instantiate
description
Instantiate a prefab into the currently active scene at an optional position/rotation/scale, parented under an optional scene GameObject path. Use 'assets-find' to locate the prefab asset first.

Assets / Prefab / Instantiate

Instantiates prefab in the current active scene. Use 'assets-find' tool to find prefab assets in the project.

Inputs

  • prefabAssetPath — project asset path of the prefab to instantiate.
  • gameObjectPath — destination path in the scene; the last segment becomes the new GameObject's name, any prefix is looked up as the parent (must already exist).
  • position / rotation / scale — optional transform; default to zero / zero / one.
  • isLocalSpace — when true, applies the transform in local space relative to the parent.

How to Call

bash
unity-mcp-cli run-tool assets-prefab-instantiate --input '{
  "prefabAssetPath": "string_value",
  "gameObjectPath": "string_value",
  "position": "string_value",
  "rotation": "string_value",
  "scale": "string_value",
  "isLocalSpace": false
}'

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

bash
unity-mcp-cli run-tool assets-prefab-instantiate --input-file args.json

Or pipe via stdin (recommended):

bash
unity-mcp-cli run-tool assets-prefab-instantiate --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
prefabAssetPathstringYesPrefab asset path.
gameObjectPathstringYesGameObject path in the current active scene.
positionanyNoTransform position of the GameObject.
rotationanyNoTransform rotation of the GameObject. Euler angles in degrees.
scaleanyNoTransform scale of the GameObject.
isLocalSpacebooleanNoWorld or Local space of transform.
Input JSON Schema
json
{
  "type": "object",
  "properties": {
    "prefabAssetPath": {
      "type": "string"
    },
    "gameObjectPath": {
      "type": "string"
    },
    "position": {
      "$ref": "#/$defs/UnityEngine.Vector3"
    },
    "rotation": {
      "$ref": "#/$defs/UnityEngine.Vector3"
    },
    "scale": {
      "$ref": "#/$defs/UnityEngine.Vector3"
    },
    "isLocalSpace": {
      "type": "boolean"
    }
  },
  "$defs": {
    "UnityEngine.Vector3": {
      "type": "object",
      "properties": {
        "x": {
          "type": "number"
        },
        "y": {
          "type": "number"
        },
        "z": {
          "type": "number"
        }
      },
      "required": [
        "x",
        "y",
        "z"
      ],
      "additionalProperties": false
    }
  },
  "required": [
    "prefabAssetPath",
    "gameObjectPath"
  ]
}

Output

Output JSON Schema
json
{
  "type": "object",
  "properties": {
    "result": {
      "$ref": "#/$defs/AIGD.GameObjectRef",
      "description": "Find GameObject in opened Prefab or in the active Scene."
    }
  },
  "$defs": {
    "System.Type": {
      "type": "string"
    },
    "AIGD.GameObjectRef": {
      "type": "object",
      "properties": {
        "instanceID": {
          "type": "integer",
          "description": "instanceID of the UnityEngine.Object. If it is '0' and 'path', 'name', 'assetPath' and 'assetGuid' is not provided, empty or null, then it will be used as 'null'. Priority: 1 (Recommended)"
        },
        "path": {
          "type": "string",
          "description": "Path of a GameObject in the hierarchy Sample 'character/hand/finger/particle'. Priority: 2."
        },
        "name": {
          "type": "string",
          "description": "Name of a GameObject in hierarchy. Priority: 3."
        },
        "assetType": {
          "$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."
    }
  },
  "required": [
    "result"
  ]
}

© IvanMurzak, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in Unity-MCP-Plugin/.claude/skills/assets-prefab-instantiate of IvanMurzak/Unity-MCP.

Open the folder on GitHubat commit 84319d7

Compare with similar skills

Assets Prefab Instantiate 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.

Assets Prefab Instantiate compared with similar skills
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Blockbench Pluginsjasonjgardner/blockbench-mcp-plugin500—~2.8kAutomated safety check: PassGPL-3.0
Unreal Blueprint Authoringflopperam/unreal-engine-mcp1.1k—~1.6kAutomated safety check: PassNone
Locus Unity BridgeMisaka-Mikoto-Tech/agent-skills278—~4kAutomated safety check: PassMIT
Unreal Material and VFX Workflowflopperam/unreal-engine-mcp1.1k—~927Automated safety check: PassNone

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Questions about Assets Prefab Instantiate

What does Assets Prefab Instantiate do?

Instantiate a prefab into the currently active scene at an optional position/rotation/scale, parented under an optional scene GameObject path. Assets Prefab Instantiate is an agent skill from IvanMurzak/Unity-MCP. Instantiate a prefab into the currently active scene at an optional position/rotation/scale, parented under an optional scene GameObject path.

When should I use Assets Prefab Instantiate?

Assets Prefab Instantiate fits situations like: game Development work in your project.

How do I install Assets Prefab Instantiate in Claude Code?

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

How do I install Assets Prefab Instantiate in Codex?

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

Can I use Assets Prefab Instantiate 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 assets-prefab-instantiate -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/assets-prefab-instantiate, .gemini/skills/assets-prefab-instantiate, .github/skills/assets-prefab-instantiate and .opencode/skills/assets-prefab-instantiate in your project.

What does Assets Prefab Instantiate need to run?

Going by SKILL.md and its folder, Assets Prefab Instantiate needs the command-line tools its instructions call (npm and npx). Our summary lists: Node.js.

Does Assets Prefab Instantiate 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 Assets Prefab Instantiate 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 Assets Prefab Instantiate use?

Assets Prefab Instantiate 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 Assets Prefab Instantiate use?

About 1.2k tokens (SKILL.md is roughly 4.6k 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 Assets Prefab Instantiate?

Skills that share tags, products or a category with Assets Prefab Instantiate: Sprite Gen (aldegad/sprite-gen, 2.7k stars), Blockbench Plugins (jasonjgardner/blockbench-mcp-plugin, 500 stars), Unreal Blueprint Authoring (flopperam/unreal-engine-mcp, 1.1k stars) and Locus Unity Bridge (Misaka-Mikoto-Tech/agent-skills, 278 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Assets Prefab Instantiate?

IvanMurzak (a GitHub user) maintains it in IvanMurzak/Unity-MCP, which has 4,412 GitHub stars. The repository holds 80 skills in this directory. The repository was last updated on October 10, 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.