The more you code, the more your world evolves — heavy projects produce scorching badlands, marathon sessions raise jagged peaks, and diverse tool usage warps the terrain into alien landscapes.

Your world is selected from a curated database of 500,000 real Minecraft seeds analyzed with Cubiomes across 46 biomes, ensuring the spawn biome genuinely matches your coding profile. Paste the seed into Minecraft and discover the world your code created.

Your Minecraft World: -233730394

Biome: Wooded Badlands — Spawn at (-608, 112) [Java & Bedrock]

Climate Profile

Stats (all projects)

• Messages: 260,397 (107,550 you / 152,847 AI)
• Tool calls: 99,713 (79 unique tools)
• Active time: 561h (2,869 sessions)
• Top tools: Read (36,563), Bash (21,227), Edit (14,087)

Preview: Chunkbase map | Deterministic: same stats = same world.

Quick start

Install as a Claude Code plugin (recommended)

In Claude Code, run:

/plugin marketplace add syaor4n/seedcraft
/plugin install seedcraft@seedcraft

That's it. Type /craft to discover your Minecraft world.

The plugin auto-updates when you restart Claude Code.

Install from local clone

git clone https://github.com/syaor4n/seedcraft.git

Then in Claude Code:

/plugin marketplace add /path/to/seedcraft
/plugin install seedcraft@seedcraft

Standalone (no Claude Code needed)

git clone https://github.com/syaor4n/seedcraft.git
cd seedcraft
node --experimental-strip-types scripts/generate_seed.ts --all

Only requires Node.js 22+. No npm install, no dependencies.

How your coding shapes the world

Minecraft 1.18+ generates biomes using 6 climate parameters (temperature, humidity, continentalness, erosion, weirdness, depth). SeedCraft maps your Claude Code stats to these exact parameters, then finds a real seed whose spawn matches.

The output ranges are calibrated to Minecraft's actual biome parameter space. A user with zero messages doesn't get "absolute zero" — they get a cold-but-real biome like snowy plains.

Usage

Skill commands

/craft                     # World from your current project (auto-detected from CWD)
/craft all                 # World from all your projects combined
/craft my-api              # World from a specific project
/craft unique              # 100% unique world hashed from your stats (biome is a surprise!)
/craft --list              # See all your projects

The skill also triggers on natural phrases like "create my minecraft world" or "what's my minecraft world".

Two modes

Standalone CLI

node --experimental-strip-types scripts/generate_seed.ts                     # Current project (auto-detect CWD)
node --experimental-strip-types scripts/generate_seed.ts --all               # All projects combined
node --experimental-strip-types scripts/generate_seed.ts --project "my-api"  # Specific project
node --experimental-strip-types scripts/generate_seed.ts --unique            # Unique hash-based seed
node --experimental-strip-types scripts/generate_seed.ts --all --unique      # Unique seed from all projects
node --experimental-strip-types scripts/generate_seed.ts --list              # List projects
node --experimental-strip-types scripts/generate_seed.ts --all --stats-only  # Climate profile only
node --experimental-strip-types scripts/generate_seed.ts --all --json        # JSON output

Fuzzy matching is supported: --project dashboard matches dashboard-v2, admin-dashboard, etc.

Loading your world in Minecraft

Java Edition

1. Open Minecraft Java Edition
2. Click Singleplayer > Create New World
3. Click More World Options...
4. Paste your seed number in the Seed for the World Generator field
5. Click Create New World

To verify: type /seed in the chat (works without cheats in Java singleplayer).

Bedrock Edition (Windows 10, Xbox, PlayStation, Switch, Mobile)

1. Open Minecraft > Play > Create New
2. Tap Create New World
3. Expand the Advanced section
4. Paste your seed number in the Seed field
5. Tap Create

Note: Bedrock Edition uses 32-bit seeds. SeedCraft prefers Bedrock-compatible seeds (shown as [Java & Bedrock] in the output). Seeds marked [Java only] will generate a different world on Bedrock.

Preview on Chunkbase (no Minecraft needed)

The output includes a Chunkbase link. Open it in any browser to:

1. See the full world map with all biomes color-coded
2. Find villages, temples, strongholds, and other structures
3. Locate your spawn point and plan your first base
4. Toggle specific biomes or structures with the Features panel

Make sure to select Java or Bedrock and the correct Minecraft version (1.21+) in Chunkbase for accurate results.

Examples

Biome rarity tiers

Not all worlds are equally easy to unlock. Your coding intensity determines which tier you reach.

Common — Most developers start here

Plains, Forest, Savanna

Uncommon — Regular Claude Code users

Old Growth Birch Forest, Birch Forest, Snowy Taiga, Dripstone Caves, Desert, Snowy Plains, Taiga

Rare — Power users with significant projects

Stony Shore, Sparse Jungle, Beach, Dark Forest, Jungle

Epic — Heavy long-term users only

Mangrove Swamp, Grove, Lush Caves, Badlands, Old Growth Pine Taiga, Old Growth Spruce Taiga, Bamboo Jungle, Sunflower Plains, Flower Forest, Swamp

Legendary — Extreme stats required (< 5% of seeds)

Warm Ocean, Lukewarm Ocean, Cold Ocean, Ocean, Pale Garden, Frozen Ocean, Stony Peaks, Jagged Peaks, Frozen Peaks, Cherry Grove, Windswept Forest, Savanna Plateau, Windswept Hills, Ice Spikes, Eroded Badlands, Snowy Beach, Snowy Slopes, Windswept Savanna, Wooded Badlands, Meadow (if you get one of these, you've earned bragging rights)

seedcraft.dev

The web companion for SeedCraft: seedcraft.dev

• Interactive demo — see how coding stats map to Minecraft climate parameters with live sliders
• Community gallery — browse and share worlds generated by other developers (seedcraft.dev/gallery)
• 500K seed database — the skill calls the API for matching against 500,000 curated seeds (with local fallback if offline)
• Biome tiers — discover which biomes are common, rare, and legendary

The skill automatically calls the seedcraft.dev API when online. If the API is unreachable, it falls back to the local 7K seed database — everything still works offline.

Share your world

Got your world? We want to see it.

• Share on the gallery — go to seedcraft.dev/gallery and submit your seed with a comment
• Post on X/Twitter with #SeedCraft
• Open the Chunkbase link, screenshot the map, and share your world
• Load the seed in Minecraft, take a screenshot at spawn, and show your biome
• Compare with friends — who has the rarest world? Who codes in a jungle?

How it works (technical)

1. Stat extraction

Reads all JSONL session data from ~/.claude/projects/, including subagent sessions (which often represent 99% of Claude Code activity). Extracts messages, tool calls by category, session durations, unique tool diversity, write/edit volume, error rates, model usage, and more.

2. Climate profile

Maps each stat to a Minecraft climate parameter using piecewise linear interpolation with breakpoints calibrated to MC's actual biome parameter space:

3. Two-stage seed selection (default mode)

1. Biome matching — Computes weighted Euclidean distance from your profile to the average climate center of each of the 46 biome types. The closest biome wins.
2. Seed selection — Among all seeds of the winning biome, finds the closest individual match. Prefers Bedrock-compatible (32-bit) seeds.
3. Deterministic tiebreak — SHA-256 hash of your stats picks among the top-20 closest seeds. Same stats always produce the same seed.

This two-stage approach guarantees the biome is always the conceptually correct one. The hash only varies the specific seed, never the biome.

3b. Unique seed generation (--unique mode)

Hashes 16 stat dimensions (messages, human/assistant counts, tool calls, unique tools, total chars, project names, session count, active time, errors, agent calls, read/write/execute calls, MCP calls, models) via SHA-256 into a single 32-bit signed integer. Completely unique to your exact usage. Biome is unknown — discover it in-game or on Chunkbase.

4. Seed database

data/seeds_db.json contains 500,000 seeds analyzed with Cubiomes for Minecraft 1.21. Each seed has its spawn biome verified at block scale with 5 climate noise parameters and a biome diversity score. 46 of the 51 spawnable overworld biomes are represented.

To regenerate or expand:

cd tools
make       # Clones Cubiomes + compiles the analyzer
make db    # Generates seeds -> ../data/seeds_db.json

FAQ

Is the seed random?
No. The same stats always produce the same seed. Your seed only changes when your Claude Code usage changes (new messages, new sessions, new projects). In default mode, the seed is picked from a curated database (biome-matched). In --unique mode, it's a SHA-256 hash of all your stats — guaranteed unique to your exact usage.

Will my seed change every time I code?
Yes, slightly — each new message adjusts your stats. If you want to "lock in" a seed, save it somewhere. The changes are gradual: one extra message won't jump you from jungle to desert.

Does it work on Bedrock?
Yes. SeedCraft generates 32-bit seeds (range −2,147,483,648 to 2,147,483,647) which work on both Java and Bedrock. Since Minecraft 1.18, both editions generate the same terrain and biomes from the same seed. Structures (villages, temples, strongholds) will be in different locations between editions.

Why not 64-bit seeds like 8150810962987124925?
Minecraft Java Edition supports 64-bit seeds (18.4 quintillion possibilities), while Bedrock only supports 32-bit (4.3 billion). SeedCraft deliberately uses 32-bit seeds so your world works on every platform — Java, Bedrock, Windows, Xbox, PlayStation, Switch, iOS, Android. With 500,000 curated seeds across 46 biomes, the 32-bit range provides more than enough diversity for precise biome matching. The terrain and biome generation is identical regardless of seed size — a 32-bit seed produces worlds just as rich as a 64-bit one.

What Minecraft version should I use?
1.18 or later. The seed database was analyzed for 1.21, but all 1.18+ versions use the same multi-noise biome system.

Is my data sent anywhere?
When using the skill, a single API call is made to our server with 8 aggregated numbers only: messages, tool_calls, write_calls, total_active_hours, unique_tools, agent_calls, orchestrate_calls, and project_count. No code, no file names, no project names, no conversation content — just 8 counters. This lets us match your profile against the full 500,000-seed database hosted on our server. If the API is unreachable, the skill falls back to a local computation using a smaller embedded seed database — everything still works offline. No telemetry, no tracking, no account required.

Can I preview my world without Minecraft?
Yes. The output includes a Chunkbase link: chunkbase.com/apps/seed-map#<your-seed>. Open it in a browser to see the full world map.

I got snowy_plains. Is that boring?
It means your project is young or small. Code more and watch your world evolve. Even snowy plains have their charm — track your progress as the biome transforms from frozen tundra to scorching badlands.

How accurate is the biome prediction?
Very. The two-stage selection guarantees the seed's spawn biome matches the closest biome center to your profile. We verified this against 500,000 real seeds analyzed with the same biome algorithm Minecraft uses internally.

Running tests

Tests for the TypeScript CLI are planned. The seed matching logic is server-side (seedcraft.dev API).

Project structure

seedcraft/
├── .claude-plugin/
│   └── plugin.json            # Plugin manifest (name, version, author)
├── skills/
│   └── seedcraft/
│       └── SKILL.md           # Skill definition (instructions for Claude)
├── scripts/
│   └── generate_seed.ts       # Main script (TypeScript, zero dependencies)
├── data/
│   └── seeds_db.json          # 500,000 curated seeds (local fallback)
├── tools/
│   ├── analyze_seeds.c        # Cubiomes seed analyzer
│   └── Makefile
├── LICENSE                    # MIT
└── README.md

How Minecraft biomes work

Minecraft 1.18+ places biomes using a multi-noise system. At every block column, 6 Perlin noise values determine the biome:

The world seed feeds these noise generators. Same seed = same world, always.

License

MIT