Prismet · the workshop of Sage Deutschle

Hello There! My name is:

Sage Deutschle

I have shipped iPhone games and built apps for the Mac. Coded Minecraft plugins and ran Minecraft servers. I also like to make custom Linux desktops, developer tools, and small web tools that keep your data on your device where possible.

See the work Discuss a role Hire me on Fiverr

Six wings around one prism. Pick a wing to open its records.

Desktop & SystemsHelm + 15
Apps & GamesPrismet Arcade + 9
Game Worlds & ModsThe Long Now + 4
MinecraftBayzyl + 5
Web Tools & DataSteam Rewind + 4
Developer ToolsPrismCode + 15

Principal works

Paper Minecraft plugin

Bayzyl

Java 21 · Paper 1.21.11 · Gradle · WorldEdit integration

WorldEdit is the foundation. Various tweaks to make it easier for beginners to learn, and for masters to create at their highest capacity. That is the core thesis behind all design decisions.

Alpha · open source (MIT)Read the case study Source Live

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A small world of generated shapesIn-game capture
Cylinder walls, stepped roofIn-game capture
A copper ring from a formulaIn-game capture
Inside the glass shellIn-game capture
The plaza and glass domeIn-game capture
A stepped sandstone pyramidIn-game capture
The geometry from aboveIn-game capture
Commands within reachHistorical interface

Powerful edits, understandable controls.

Read the engineering story →

Apps & Games

Prismet Arcade

SwiftUI · SceneKit · Game Center · Supabase

A home for classic games and useful lenses, built for Apple devices

iPhone build installed · in developmentRead the case study App Store

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Current installed development build, captured on an iPhone; older iPhone and iPad views follow.Physical iPhone runtime · 31 October 2026
A pocket arcadeCo-developed
Chess with adjustable oppositionCo-developed
Place a fleetCo-developed
A daily Sudoku sheetCo-developed
Cards on green feltCo-developed
Checkers in red and blackCo-developed
Snake after darkCo-developed
Room for the whole collectionCo-developed
Chess on a larger canvasCo-developed

A collection with individual character.

Read the engineering story →

Desktop & Systems

Helm

KDE Plasma 6 · QML · SwiftUI · Bash

A KDE desktop built like a command bridge.

Personal desktop environmentRead the case study

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Time across the worldRendered widget
A clock for the bridgeRendered widget
Twenty-four threads at a glanceRendered widget
The shape of a workloadRendered widget
The reactor faceRendered widget
One palette across the bridgeRendered widget
Storage as a visual mapRendered widget
What is using the machineRendered widget

A design system for useful instruments.

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Developer Tools

PrismCode

Electron · React · TypeScript · Monaco

The engineering workbench behind the unified Cicero app

Local workbench · evolvingRead the case study

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Compare two proposed changesScripted demo
Inspect the diffScripted demo

Make agent work comparable.

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Game Worlds & Mods

The Long Now

Desktop

A colony simulation below, a wizard’s castle above.

Game prototype · in developmentRead the case study

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Before the first cityHistorical prototype
A bridge into the medieval eraHistorical prototype
The industrial turnHistorical prototype
A far-future horizonHistorical prototype
The Wizard King’s castleHistorical prototype
Life in the valleyHistorical prototype
Inside the gaming parlorHistorical prototype

Web Tools & Data

Steam Rewind

Web · Mac · iPhone

Your Steam library, told as stories

Available on the webRead the case study Live

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Rediscover the backlogDemo data
Time spent on the DeckDemo data

Dark stone fortress beside the sea, with bright lava flowing down its walls.

Build Big with Bayzyl

Bayzyl is a building toolkit for Minecraft. Type one command and a dome appears. Paint a forest with a brush. Copy a whole castle and stack ten more. Made a mess? Undo it.

The idea behind it: building clubs for libraries, schools and youth organisations, where Minecraft time becomes practice with coordinates, geometry and teamwork. Bayzyl itself stays free and open source.

See Build Big with Bayzyl

Fun Analytic Tools

Web tools for exploring libraries and public data. Each keeps its source and coverage boundaries in view.

Live

Steam Rewind

Explore a Steam library: playtime, eras, and the games you forgot you own.

Live

Debt Clock

Explore U.S. debt and other public financial measures, with source dates and definitions.

Live

Uncle Scam

Where is my money going? A salary and a ZIP code in, an itemized receipt for your taxes out.

All work

58 of 58 records

Principal works

BayzylWorldEdit is the foundation. Various tweaks to make it easier for beginners to learn, and for masters to create at their highest capacity. That is the core thesis behind all design decisions. Minecraft Java 21 · Paper 1.21.11 · Gradle Alpha · open source (MIT) Source Live

Prismet ArcadeA home for classic games and useful lenses, built for Apple devices Apps & Games SwiftUI · SceneKit · Game Center iPhone build installed · in development App Store

HelmA KDE desktop built like a command bridge. Desktop & Systems KDE Plasma 6 · QML · SwiftUI Personal desktop environment —

PrismCodeThe engineering workbench behind the unified Cicero app Developer Tools Electron · React · TypeScript Local workbench · evolving —

The Long NowA colony simulation below, a wizard’s castle above. Game Worlds & Mods Desktop Game prototype · in development —

Steam RewindYour Steam library, told as stories Web Tools & Data Web · Mac · iPhone Available on the web Live

Records

Accessible Debt ClockPublic financial data, with its dates and definitions in view Web Tools & Data Web · iPhone Available on the web Live

QR Scanner & pocket toolsSmall browser tools with local state and clear boundaries Web Tools & Data HTML · CSS · JavaScript Published on GitHub Pages Live Source

CiceroThe council prototype in the PrismCode / Cicero lineage Developer Tools Desktop · iPhone Historical prototype —

HOI4 AI War RoomA local cockpit experiment around Hearts of Iron IV Developer Tools Mac · LAN web Local experiment —

Command HelmA personal editor shaped around agent work. Desktop & Systems VSCodium · TypeScript · Electron Personal fork —

Command Helm RemoteAn iPhone control room for coding work across computers. Apps & Games SwiftUI · Python · JavaScript Installed development companion —

CastraAn operations desk for agent work across computers. Developer Tools Python · Tk · tmux In development —

Prismet StationAn agent crew console for a print-workflow experiment. Developer Tools TypeScript · HTML · CSS Manual prototype —

Account HelmSeparate coding sessions, with identities that stay put. Desktop & Systems Swift · SwiftUI · Shell Local macOS app —

Block by BlockMinecraft lessons that the server can check. Minecraft Java · Paper · Gradle First vertical slice —

Blue TeamPersonal device audits with visible drift and careful changes. Desktop & Systems Shell · Python · launchd Personal defensive tooling —

PaigeA review desk for customer-message drafts. Developer Tools TypeScript · HTML · Bun Local prototype —

CohortCoding-agent orchestration with cost and preservation checks. Developer Tools TypeScript · Node.js · OpenCode Testing build —

Prismet LabA native workspace for calculations, figures and reports. Apps & Games Swift · SwiftUI · Swift Package Manager In development —

Council RoomA native room for conversations with local-model personas. Developer Tools Swift · WKWebView · Python Historical prototype —

HelmScannerNetwork evidence in a native Mac dashboard and widget. Desktop & Systems Swift · SwiftUI · WidgetKit Local macOS app —

Spelltower MCA native control surface for a private Minecraft server. Minecraft SwiftUI · Python · Shell Personal operations toolkit —

Cicero for iOSAn early pocket companion for the council. Apps & Games SwiftUI · Swift · XcodeGen Historical prototype —

Escape RevertThree Escape presses to go back. Desktop & Systems Swift · AppKit · CoreGraphics Local utility —

Usage TrackerA local view of coding-agent usage. Desktop & Systems Python · HTML · HTTP Local utility —

Axiom Extension experimentsParallel experiments extending a Minecraft building tool. Minecraft Java · Fabric · Gradle Historical experiments —

KYZERAn early local-first assistant experiment. Developer Tools Python · FastAPI · SQLite Historical prototype —

Labienus QLoRAMeasured adaptation research for a local development assistant. Developer Tools Python · PyTorch · Transformers Experimental research —

Helix Medical Model ResearchExperimental adaptation and evaluation of medical language models. Developer Tools Python · PyTorch · Transformers Research prototype —

AlexeiChatA two-person messenger across language boundaries. Apps & Games Electron · Node.js · WebSocket Cross-platform prototype —

Fable clean-room skillsReusable workflows for clean-room software work. Developer Tools Markdown · Agent workflows Agent workflow suite —

YGGDRASIL Launch MenuA native launch-menu preview inside Elden Ring. Desktop & Systems C++ · Python · Shell Additive preview —

RimWorld Vanilla+ packA curated Vanilla+ preset with an auditable load order. Game Worlds & Mods Python · RimWorld · XML Curated mod preset —

SplTwrRecorded experiments in Mac game compatibility. Desktop & Systems Shell · Python · Wine Personal research toolkit —

Helm iOS prototypeAn early iPhone dashboard for the home server mesh. Apps & Games SwiftUI · Swift · Go Historical installed prototype —

AlarmClockA small native alarm-clock experiment. Apps & Games SwiftUI · Swift · UserNotifications Installed prototype —

Minecraft mesh monitorA compact view of a Minecraft server mesh. Desktop & Systems Python · HTTP · HTML Personal utility —

Music HelmAn iPhone listening-route builder. Apps & Games Swift · SwiftUI · MusicKit Installed prototype and newer source —

MeshRecallReturn to the server and place you left. Minecraft Java · Velocity · Paper Minecraft plugin pair —

BayzylBridgeA separate chat bridge for a Minecraft workflow. Minecraft Java · Paper · Fabric Minecraft integration prototype —

ATV Remote customizationA customized desktop remote for Apple TV. Desktop & Systems Electron · JavaScript · Python Third-party app customization —

Spellbook DeckA lightweight information panel for the Mac desktop. Desktop & Systems Swift · AppKit · Shell Personal desktop utility —

PlexSquishA Mac control panel for media-encoding jobs. Desktop & Systems Swift · AppKit · Go Historical prototype —

TabernaA shared room for locally hosted AI residents. Developer Tools Python · FastAPI · SQLite Development prototype —

Local Persona AgentsA common sidecar for distinct local-model assistants. Developer Tools Python · Shell · Ollama Development tooling —

HELM VM Image ToolingReproducible boot artifacts for an ARM Linux guest. Desktop & Systems Shell · Arch Linux ARM · ext4 Infrastructure prototype —

Audio Transcription PipelineBatch processing with visible progress and completeness checks. Developer Tools Python · GPU processing · JSON status tracking Experimental pipeline —

Uncle ScamA tax receipt that makes public spending personal. Web Tools & Data JavaScript · HTML · CSS Live web tool Live

LinkedIn ConnectA browser-workflow automation experiment. Web Tools & Data Browser automation · Python Personal prototype —

Local API ProxyA configurable proxy for API response experiments. Developer Tools Python · HTTP · API tooling Experimental utility —

Audiobookshelf iOS Development BuildA personal iPhone build of the upstream audiobook app. Apps & Games Nuxt · Vue · Capacitor Personal development build —

Cabinet

Civilization V Mod ProfilesSeparate stable and experimental mod stacks on Mac Game Worlds & Mods Mac Local launcher workflow —

QuarkA personal hub for mail, calendars, code, and files Desktop & Systems Electron · JavaScript · safeStorage Private prototype —

AirhornOne big red button Apps & Games Desktop Small desktop app —

YggdrasilRebuilding Dark Souls III spaces inside Elden Ring Game Worlds & Mods Games Experimental mod · in development —

Westeros for UEBS 2A Westeros-inspired battle-map project Game Worlds & Mods UEBS 2 map editor Local map-editor candidate —

Helix Research DeskA local-first desk for source-backed genetics research Desktop & Systems Desktop Local research workbench —

Minecraft · a world of details

Built, block by block.

Minecraft →

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Harbor at sunsetMinecraft · July 2026
A city above the waterMinecraft · July 2026
A night build on a Minecraft server I ran.Minecraft · July 2026
Lanterns on the hillsideMinecraft · July 2026
Inside the colonnadeMinecraft · July 2026
A castle lit from withinMinecraft · July 2026
A landmark by the waterMinecraft · July 2026
Cherry trees after darkMinecraft · July 2026

Hi, I'm Sage.

I've been building, breaking, repairing, and experimenting with computers for as long as I can remember. Prismet started as the name of one of my projects and eventually became the name I use for everything I build.

My work ranges from apps and web tools to Minecraft infrastructure, Linux customization, and developer tooling. Some projects have shipped, some run on this site, and others are local builds, prototypes or archived experiments.

I like building tools that respect the person using them. They should be fast, understandable, private when possible, and designed around the actual problem instead of unnecessary complexity.

That philosophy applies whether I'm building a Minecraft plugin with safeguards for destructive edits, a lightweight web tool with no backend, or a Linux desktop where every widget earns its space.

Skills, with the project that proves each

SwiftPrismet Arcade
JavaBayzyl
TypeScriptPrismCode
JavaScriptQR Scanner & pocket tools
PythonPrismet Arcade
QMLHelm
BashHelm
SwiftUIPrismet Arcade
SceneKitPrismet Arcade
Game CenterPrismet Arcade
SupabasePrismet Arcade
Paper 1.21Bayzyl
WorldEdit / FAWEBayzyl
GradleBayzyl
KDE Plasma 6Helm
Arch LinuxHelm
ElectronPrismCode
ReactPrismCode
SQLitePrismCode
HTML & CSSQR Scanner & pocket tools
BarcodeDetectorQR Scanner & pocket tools
MusicKit JSQR Scanner & pocket tools

What I can build for you

Minecraft pluginsPaper & Spigot plugins, from one command to complete custom toolkits.
Minecraft servers & networksVelocity, Docker, permissions, backups, deployment, and server infrastructure.
iPhone, iPad & Mac appsSwiftUI apps built from the first screen through App Store submission.
Web tools & landing pagesFast, focused websites and utilities without unnecessary complexity.
Developer tooling setupEditors, terminals, and coding assistants configured to work together.
Linux desktop customizationKDE Plasma widgets, themes, scripts, workflows, and desktop automation.

Three doors

Hire me on Fiverr