.nbt · .schem · .litematic
Schematic interop
Open and export WorldEdit and Litematica alongside native .nbt, preserving block entities — chest contents, sign text.
Desktop app for macOS, Windows and Linux
Minecraft structures, drafted in 3D.
Blockwright opens .nbt, .schem and .litematic files and renders every block with the textures from your own Minecraft. Generate builds with AI, edit block by block, and export straight back into the game.
Lifetime licenseOne payment of $39macOS / Windows / LinuxYour files stay on your machine
Open what you already have. .nbt structures, WorldEdit .schem and Litematica .litematic schematics.
True in-game look. Models and textures come from your own installation’s content pack, mods included.
Everything local. A native app for macOS, Windows and Linux. Nothing is uploaded anywhere.
AI generation
Describe the build. Watch it take shape in the viewer.
Write a prompt (with a reference image, if you like) and Blockwright generates the structure through an emit → render → review loop: the model builds, looks at the render, and refines — with the preview evolving live on your screen.
It runs on the AI subscription you already have — Claude (Pro/Max) or Codex (ChatGPT Plus/Pro) — no API credits. Saver, Balanced and Thorough cost presets let you trade spend for polish.
- Models
- Claude (Pro/Max) or Codex (ChatGPT Plus/Pro) — the subscription you already pay for.
- Credits
- None. Blockwright never sells tokens or charges per generation.
- Cost
- Saver, Balanced and Thorough presets, to trade spend for polish.
Build Planner
Compose the build before spending a single token.
Pick a structure type — House, Tower or Church, each with a code-built shell the AI furnishes — then assemble the rest from parts: decoration, roof, basement, attic, yard, and up to two rooms per floor, with a live 3D preview of the build volume.
Code-guaranteed shell
The chosen type’s exterior is built by code and preserved; the AI handles the interior and the detail.
Rooms per floor
Assign up to two rooms to each floor — living room + kitchen below, bedrooms + library above — with per-floor heights.
Module Gallery
Every roof, basement, yard and decoration has a live 3D preview in the Module Gallery before you commit.
Block editor
Edit right in the 3D scene, without fear of mistakes.
With a structure open, hit Edit and work block by block inside the viewer itself. Every save writes a new .nbt version — a mistake is never fatal.
- Select & transform — move, mirror and rotate with blockstates that stay correct (stairs, logs, doors).
- Paint — brush, recolor and fill with a ghost preview; the right button orbits, so a stroke never fights the camera.
- Live symmetry — an X or Z mirror with a translucent plane; your edits are replicated across it as you work.
- Undo that runs deep — a long undo/redo history; every Save version joins the same chain as AI builds.
World viewer
Fly through your whole world.
Open a Minecraft save (1.13+) and explore it read-only. Chunks stream in around the camera and unload behind you — full geometry up close, a lighter surface far away — so an entire world stays explorable.
A minimap, day/night, a dimension switcher, and a find-structures search that jumps you to any village, stronghold or mod structure. The world is never modified.
From the app to the game — and back
Open formats, round trip.
Blockwright speaks the formats the community already uses and handles the tedious parts: size limits, worldgen JSON, and ready-to-run datapacks.
jigsaw
Big builds become jigsaw
A build bigger than the Structure Block limit (48³) is automatically cut into a jigsaw assembly that reassembles voxel-perfectly in-world.
/place
Export to world
Installs the build straight into a save as a ready-to-run datapack and hands you the /place command with one-click copy. Run /reload and paste.
mod workspaces
Real mod support
Render modded structures with the mod’s own textures, generate with its blocks, and export the .nbt plus the worldgen JSON that makes it spawn.
reimport
Round trip with the game
Edit the build in Minecraft with vanilla Structure Blocks and stitch the result back in as a new version of the same project.
versions
A library with history
Every build lives in its own folder — the latest .nbt, kept versions and a generation log. Step back to any point.
In depth
A page for each thing it does
Longer walkthroughs of what people arrive looking for — AI generation, jigsaw and worldgen authoring, schematics, and world saves.
- AI structure generatorDescribe a build, watch it render pass by pass, keep the .nbt.
- Jigsaw viewer & testerConnectors and template pools in 3D, simulated across seeds.
- Jigsaw generatorSplit oversized builds, write the worldgen JSON, get the /place command.
- Schematic viewer & editor.schem, .litematic, .nbt and .mcstructure, with your own textures.
- World viewer & editorFly a whole save, then edit it through a guarded write path.
Pricing
Pay once. The app is yours.
No monthly plan, no credits to top up, no account to create. One lifetime license, and that is it.
Lifetime license
$39
One payment. Covers macOS, Windows and Linux.
Your license key arrives by email right after payment. Keep that email — it is the only record of your key.
Already yours? Download the app and activate it with the key you were sent.
By purchasing you agree to the Terms & license and the Refund policy. Payment is processed by Stripe.
- Every updateNew versions land at no extra cost, the big ones included.
- All three platformsNative installers for macOS (.dmg), Windows (.exe) and Linux (.deb, .rpm, .flatpak). No account, no telemetry.
- Generation on your own AIUse the Claude or Codex subscription you already have. No per-build fee.
- Support from the makerYou talk to the person writing the code, not a ticket form.
Blockwright is made by one person — every line of code and every test build. Buying a license is what keeps the next versions coming.
Latest news
Release notes and what’s being built
Every release, every feature still in progress, and guides for working with schematics and worlds.