// open source & experiments

Projects

A selection of open source projects and other things I've built.

gem.coop
The Gem Cooperative - Founding member, Project Leadership Committee.
Studio
The smallest possible MCP server. Converts CLI commands to AI tools with a simple template pattern.
BanchoBox
A companion app for Dave the Diver. Lists all the dishes and fishes in the game so you can sort, filter, and min-max every tiny detail.
dotfiles
I got nerdsniped into caring about my dotfiles and changed my whole dev environment. Now managed by chezmoi and Claude.
Ghostty Shaders
A Ghostty shader emulator using WebGL. Built to help preview shaders for Ghostty on the web.
LLM FIM Tester
A Fill-In-The-Middle tester for large language models powered by OpenRouter.
Toy LLM
A Toy LLM proof-of-concept that uses only canned phrases to respond safely but still coherently.
Tossball
The Outer Worlds 2: Pitchball & Tossball Card checklist. A little checklist made with Svelte.
Dim Sum Scorer
Score tracker for Sushi Go! Spin Some for Dim Sum. Supports 2-6 players with automatic scoring for all dim sum cards.
Give Away Elon's Money
A trillion dollars, a thousand squares, and a list of real sourced prices for fixing things. Fund what you like and watch how little the pile moves.
Loan Calculator
Compare loans side by side. Calculate monthly payments, total interest, and grand totals.
Apple Upgrade, decoded
A step-by-step walkthrough of Apple's Klarna-backed iPhone lease, month by month, priced against paying cash, Apple Card financing, and carrier installments.
RubyGems & Bundler
Former team lead and core maintainer of RubyGems. Contributed to Bundler lockfile checksums, gem contents storage, organizations, new website design, as well as serving on the security team.
martinemde.com/projects © 2025 Martin Emde v2026.7_