v0.1.6Import your own models, music and movies

Take the game apart.
Build a new one.

Living Tool is the modding workbench for Guardian's Crusade. Open the hidden file system on your own disc, change anything from a line of dialogue to a whole new town, and share it as one small patch.

Download Living Tool Other platforms

v0.1.6 · Oct 16, 2026 · bring your own disc

The world editor in 3D: a village chunk with its houses, crates and townsfolk, and the actor inspector for Boy

gc_decompPCSX-ReduxTAURIRustBlenderMCP

Built on a 100% matching decomp, with round trips to the tools modders already use and a door for your own AI agents.

A workbench made from the game itself. Every format it reads was traced in the decomp, so it edits files the way the game loads them.

FIG 0.1

Read-only by design

Your dump is checked against Redump and never written. Builds start from a fresh copy.

FIG 0.2

Built on the decomp

All 1,196 functions match retail, so every format comes from the code that loads it.

FIG 0.3

Live in the emulator

Push edits into a running PCSX-Redux, then warp straight to the chunk you changed.

THE GAME, COUNTED

functions matched to retail

world chunks, plus new areas

cutscenes played natively

tools for your own AI agents

Open the hidden disc

A normal ISO tool sees two files. Living Tool reads the 493-entry table hidden inside them, so every model, texture, song, movie and map opens by name.

Read about file formats

Model viewer showing the Living Toy Draken in PSX-accurate 3D

Files screen listing the NPC packs from the hidden file table

1.1Files

The hidden table, with caps and aliases.

1.2Models and poses

Every toy and townsperson in real 3D.

1.3Movies and sound

STR movies, XA voices and every song.

Build new places

Lay out a town from a library of props, houses and house parts, paint the ground under it, then open it as a new area past the end of the disc, with doors and townsfolk.

Read about the chunk format

World editor placing log houses from the construction kit library in 3D

Ground painter with paths, a rock wall and a pond on a new area

2.1Construction kit

Harvest, place and arrange in 3D.

2.2Ground painter

Paint, raise, flatten and ramp tiles.

2.3New areas

Past the disc, with doors and NPCs.

Direct every scene

Play any of the game's 115 cutscenes right in the app, then change them line by line. Right-click to add dialogue, flags or a walk path, and Living Tool writes the bytes.

Read about event opcodes

Cutscene player showing the dream scene with the line Destiny is calling

Script editor right-click menu inserting a dialogue action

3.1Cutscene player

Every field scene, played natively.

3.2Guided actions

Dialogue, flags, warps and walk paths.

3.3Flag list

320 flags named from the game's scripts.

Rewrite every line

Edit dialogue against an in-game preview that counts every character, and retune toys, enemies, items, shops and encounters from forms that know each field.

Read about text control codes

Text editor with page-by-page fit counts for the Mayor's lines

Game data form editing the Living Toy Draken

4.1Text and dialogue

Box-accurate preview and fit counts.

4.2Game data

Toys, enemies, items, shops, encounters.

4.3Story battles

Change the fights the story starts.

Bring your own assets

Models from Blender, textures from any paint app, songs from a MIDI file, movies from a folder of frames. Each is encoded the way the game expects and checked against its budget before it's written.

Read about importers

5.1Models and poses

OBJ or glTF in, poses kept or neutral.

5.2Songs and samples

MIDI into song cues, WAV into banks.

5.3Movies

PNG frames and a WAV, encoded to STR.

Make a game of your own

Take the retail story out in one step and a new game starts in an empty house. Build on retail, or on a base like HackerGC that moves the engine's limits.

6.1

Blank slateActors, examine spots and triggers out; a starter scene hands you the Knight.

6.2

BasesHackerGC adds spare files, flags past 512 and new code overlays.

6.3

One patch against retailPlayers apply it to their own disc, base included.

Build, test and share

Plan where each change lands and write a verified, bootable image. Push edits into a running PCSX-Redux and warp straight to them, then share one small BPS patch.

Read about building a patch

Build and test screen listing verified builds

The game running live in the emulator panel

7.1File patcher

Dry run: in place, relocated or blocked.

7.2Live in the emulator

Push edits, set flags and warp to them.

7.3BPS patches

Share your changes, never the game data.

Bring your own agent

Turn on AI agents in Settings and Claude Code, Claude Desktop or any MCP client can read the disc and work on your project. Its 33 tools call the same code as the screens, so every edit is staged, revertible and shows up in the app as it happens.

CLAUDE CODE

claude mcp add --transport http living-tool http://127.0.0.1:7811/mcp

127.0.0.1 only · off until you allow it

claude · english-script-fixes

edit_game_datatoy/22 Draken · pp 6 → 8

link_doorchunk/39 inn → area 1328

build_imagebuilds/0005 · verified · BPS

emulator_warpchunk/39 · in front of the inn

Done. Draken has 8 PP, build #5 is verified, and you're standing at the inn door in the emulator. Walk in to reach the new town.

Claude Code changed 2 filesReview

Changelog

Mascot and polish
The wind-up mascot in empty states, a job panel in the File patcher, and fixes from testing.
v0.1.6 · Oct 16, 2026
A game of your own
Blank slate, HackerGC bases, and importers for models, textures, songs, samples and movies.
v0.1.5 · Oct 15, 2026
Cutscenes
Play every field scene natively, edit it, or add new ones with walk paths. NPCs in 3D.
v0.1.4 · Oct 11, 2026
Ground painter and agents
Paint, raise and ramp new ground, and serve 33 tools to your own AI agents.
v0.1.3 · Oct 10, 2026