L2 Modding MCP
This server provides 25 tools for modding Lineage 2 / Unreal Engine 2.5 assets, covering textures, 3D meshes, animations, sounds, maps, and package management.
Texture Operations
Inspect, extract (single or all to PNG), import/replace, and batch process textures in
.utxfiles (supports DXT1/3/5, P8, RGBA8, RGB8, G16)Batch operations: grayscale, invert, brightness, contrast, resize, blur, sharpen
Generate normal, height, AO, and specular maps from a diffuse texture
Build texture atlases and pack PBR channels (metallic/roughness/AO/height to RGBA)
Batch import a folder of PNG/BMP/TGA/JPG images into a new
.utxpackage
3D Mesh & Level Design
Generate procedural castles (configurable towers, walls, battlements, gates, keeps) and heightmap terrains (hills, mountains, plains, islands)
Export meshes to Unreal Engine
.usxpackages, OBJ, or FBXImport OBJ files for re-export to
.usxGenerate LOD0–LOD3 levels via vertex decimation and create box/cylinder collision meshes
Animations
List, inspect, and export animation sequences from
.ukxpackages to BVH format (Blender/Maya compatible)
Sounds
List and extract individual or all sounds from
.uaxpackages to WAV format
Maps
Parse
.unrlevel files to inspect brushes, static mesh actors, lights, and player starts
Package Management
Compare two packages to identify export differences
Scan directories for mesh↔texture cross-references
Optimize packages by removing dead exports
List all assets and name table entries in
.utx/.usx/.ukxfiles
Provides tools for modding Unreal Engine 2.5 assets, specifically Lineage 2, including extracting, modifying, and repackaging textures (.utx) and generating procedural 3D meshes (.usx).
Click on "Install Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type
@followed by the MCP server name and your instructions, e.g., "@L2 Modding MCPextract all textures from armor.utx"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
L2 Modding MCP
MCP Server for Lineage 2 / Unreal Engine 2.5 asset modding — 25 tools. Extract, modify, repackage textures (.utx), generate procedural meshes (.usx), parse animations (.ukx), sounds (.uax), and maps (.unr).
Features
Textures
Extract/inspect/import textures from
.utxpackagesCodec: DXT1/DXT3/DXT5/P8/RGBA8/RGB8/G16 (decode + encode)
Batch process: grayscale, invert, brightness, contrast, resize, blur, sharpen
Batch import: folder of PNGs →
.utxin one stepNormal map, AO map, specular map generation
Texture atlas builder (grid packing)
PBR channel packer (metallic/roughness/AO/height → RGBA)
3D Meshes
Procedural castle generator (towers, walls, battlements, gate, keep, floor)
StaticMesh serializer for
.usxpackagesExport to OBJ and FBX ASCII
Import from OBJ back into the pipeline
LOD generator (vertex decimation, LOD0–LOD3)
Collision mesh generator (box, cylinder)
Procedural heightmap terrain (hills, mountains, plains, island, noise)
Animations (.ukx)
Parse AnimationSequence data (frames, bones, tracks)
Export to BVH format (Blender/Maya compatible)
Sounds (.uax)
List sound assets
Extract sounds to WAV (PCM and embedded WAV)
Maps (.unr)
Parse level data: brushes, static meshes, lights, player starts
Package Management
Package browser: scan directories for mesh↔texture cross-references
Package optimizer: remove dead exports, reduce size
Package comparator: diff two packages
Related MCP server: soft-ue-cli
Installation
pip install -e .Usage with opencode
Add to opencode.json:
{
"mcp": {
"l2-modding": {
"type": "local",
"command": ["python", "-m", "l2_mcp.server"],
"enabled": true
}
}
}MCP Tools (25)
Textures
Tool | Description |
| List all assets in .utx/.usx/.ukx |
| List name table entries |
| Detailed texture info (format, mips, palette) |
| Extract single texture to PNG |
| Extract all textures to directory |
| Replace texture with PNG (repacks .utx) |
| Batch transform (grayscale, invert, etc.) |
| Folder of PNGs → .utx |
| Generate normal/AO/specular map |
| Pack textures into atlas grid |
| Pack metallic/roughness/AO/height → RGBA |
Meshes & Level Design
Tool | Description |
| Generate procedural 3D castle |
| Generate stone/roof/floor/gate textures |
| Export meshes to .usx |
| Export meshes to OBJ or FBX |
| Import OBJ → mesh pipeline |
| Generate LOD0–LOD3 by decimation |
| Generate collision mesh (box/cylinder) |
| Procedural heightmap terrain |
Animations
Tool | Description |
| List animations in .ukx |
| Export animation to BVH |
Sounds
Tool | Description |
| List sounds in .uax |
| Extract sound to WAV |
| Extract all sounds to WAV |
Package Management
Tool | Description |
| Diff two packages |
| Scan L2 folder for mesh↔texture refs |
| Strip dead exports, reduce size |
| Read .unr maps (brushes, actors, lights) |
Supported Texture Formats
ID | Format | Description |
0 | P8 | 256-color paletted |
1 | RGBA8 | 32-bit RGBA |
3 | DXT1/BC1 | 4 bpp, optional 1-bit alpha |
4 | RGB8 | 24-bit RGB |
5 | DXT3/BC2 | 8 bpp, explicit alpha |
6 | DXT5/BC3 | 8 bpp, interpolated alpha |
B | G16 | 16-bit grayscale |
Project Structure
src/l2_mcp/
├── server.py # MCP server (25 tools)
└── upk/
├── reader.py # Binary reader (compact indices, GUIDs)
├── package.py # UPK parser (.utx/.usx/.ukx) + serializer
├── texture.py # DXT codec + texture decode/encode
├── writer.py # Package rebuilder / repacker
├── mesh.py # StaticMesh serializer + primitives
├── castle.py # Procedural castle generator
├── obj_io.py # OBJ/FBX export
├── obj_import.py # OBJ import
├── animation.py # .ukx parser + BVH export
├── normal_map.py # Normal/AO/specular map generator
├── batch_builder.py # Batch import + heightmap terrain
├── lod.py # LOD generator + collision mesh
├── browser.py # Package scanner + optimizer
├── atlas.py # Texture atlas + PBR packer
├── sound.py # .uax sound extractor
└── unr.py # .unr map parserLicense
MIT
Maintenance
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