For complex input (multi-line strings, code), save the JSON to a file and use:
unity-mcp-cli run-tool assets-copy --input-file args.json
Or pipe via stdin (recommended):
unity-mcp-cli run-tool assets-copy --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
`sourcePaths`	`any`	Yes	The paths of the assets to copy.
`destinationPaths`	`any`	Yes	The paths to store the copied assets.

Input JSON Schema

{
  "type": "object",
  "properties": {
    "sourcePaths": {
      "$ref": "#/$defs/System.String[]"
    },
    "destinationPaths": {
      "$ref": "#/$defs/System.String[]"
    }
  },
  "$defs": {
    "System.String[]": {
      "type": "array",
      "items": {
        "type": "string"
      }
    }
  },
  "required": [
    "sourcePaths",
    "destinationPaths"
  ]
}

Output

Output JSON Schema

{
  "type": "object",
  "properties": {
    "result": {
      "$ref": "#/$defs/com.IvanMurzak.Unity.MCP.Editor.API.Tool_Assets+CopyAssetsResponse"
    }
  },
  "$defs": {
    "System.Collections.Generic.List<com.IvanMurzak.Unity.MCP.Runtime.Data.AssetObjectRef>": {
      "type": "array",
      "items": {
        "$ref": "#/$defs/com.IvanMurzak.Unity.MCP.Runtime.Data.AssetObjectRef",
        "description": "Reference to UnityEngine.Object asset instance. It could be Material, ScriptableObject, Prefab, and any other Asset. Anything located in the Assets and Packages folders."
      }
    },
    "com.IvanMurzak.Unity.MCP.Runtime.Data.AssetObjectRef": {
      "type": "object",
      "properties": {
        "instanceID": {
          "type": "integer",
          "description": "instanceID of the UnityEngine.Object. If this is '0' and 'assetPath' and 'assetGuid' is not provided, empty or null, then it will be used as 'null'."
        },
        "assetType": {
          "$ref": "#/$defs/System.Type",
          "description": "Type of the asset."
        },
        "assetPath": {
          "type": "string",
          "description": "Path to the asset within the project. Starts with 'Assets/'"
        },
        "assetGuid": {
          "type": "string",
          "description": "Unique identifier for the asset."
        }
      },
      "required": [
        "instanceID"
      ],
      "description": "Reference to UnityEngine.Object asset instance. It could be Material, ScriptableObject, Prefab, and any other Asset. Anything located in the Assets and Packages folders."
    },
    "System.Type": {
      "type": "string"
    },
    "System.Collections.Generic.List<System.String>": {
      "type": "array",
      "items": {
        "type": "string"
      }
    },
    "com.IvanMurzak.Unity.MCP.Editor.API.Tool_Assets+CopyAssetsResponse": {
      "type": "object",
      "properties": {
        "CopiedAssets": {
          "$ref": "#/$defs/System.Collections.Generic.List<com.IvanMurzak.Unity.MCP.Runtime.Data.AssetObjectRef>",
          "description": "List of copied assets."
        },
        "Errors": {
          "$ref": "#/$defs/System.Collections.Generic.List<System.String>",
          "description": "List of errors encountered during copy operations."
        }
      }
    }
  },
  "required": [
    "result"
  ]
}

assets-copy

Assets / Copy

How to Call