# Kiln (MCP server)

> Kiln is an MCP server that adds developer tools to AI assistants such as Claude Desktop, Claude Code and Cursor. Build and revise procedural 3D assets with your coding agent. It has 296 GitHub stars, is released under the MIT license and runs locally with npx -y @instruktlabs/kiln.

Build and revise 3D assets with your coding agent. Your agent writes JavaScript using Kiln's geometry and material helpers. Kiln runs the program, returns rendered views and structural checks, and exports a GLB. Keep the editable source to refine the asset later.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/instruktlabs/kiln |
| GitHub stars | 296 |
| License | MIT |
| Language | TypeScript |
| Transport | stdio |
| Packages | npm: @instruktlabs/kiln |
| Remote URL | none |
| Needs API key | no |
| Official | no |
| Works with | Claude Desktop, Claude Code, Cursor, VS Code |
| Category | Developer tools |
| Latest release | v1.5.0 (Oct 25, 2026) |
| Last commit | Oct 26, 2026 |

## Install

### Claude Desktop (claude_desktop_config.json)

```json
{
  "mcpServers": {
    "kiln-instruktlabs": {
      "command": "npx",
      "args": [
        "-y",
        "@instruktlabs/kiln"
      ]
    }
  }
}
```

Settings > Developer > Edit Config. macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\. Restart Claude Desktop afterwards.

### Claude Code

```sh
claude mcp add --transport stdio kiln-instruktlabs -- npx -y @instruktlabs/kiln
```

### Cursor (.cursor/mcp.json)

```json
{
  "mcpServers": {
    "kiln-instruktlabs": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@instruktlabs/kiln"
      ]
    }
  }
}
```

Project file; use ~/.cursor/mcp.json to enable it in every project.

### VS Code (.vscode/mcp.json)

```json
{
  "servers": {
    "kiln-instruktlabs": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@instruktlabs/kiln"
      ]
    }
  }
}
```

Config formats checked against the official docs on 2026-10-07.

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