Seattle engineer building agent tooling, MCP servers, small hardware, and the occasional browser game. More at lucasarango.space · ask my résumé questions at hire-lucas.vercel.app.

• multiplayer-chat — Relay: multiplayer coding-agent rooms. Share a link, steer or queue the agent together, review diffs, ship a PR. Cloudflare Durable Objects + OpenCode.
• system-design-companion — Real-time Excalidraw whiteboard where candidates, interviewers, and MCP agents design systems together.
• pr-bot — Eve agent on Vercel that reviews PRs, commits localized fixes, and merges eligible changes.
• ai-shopping-mcp — OAuth-protected Kroger/QFC MCP: product and deal search, pantry, lists, reviewed cart adds.
• agents — Go gateway for task-focused agents on Google's ADK with AG-UI endpoints and SQLite.

• keyboard-studio — Native SwiftUI configurator and Codex status deck for SayoDevice O2L V2 pads over IOKit HID.
• pediatric-interviewer-esp32 — A grumpy cat on an ESP32-S3 that grills you on pediatric-dentistry oral boards.
• pantry-pulse — RFID pantry station with a Cloudflare D1 inventory and MCP tools.

• react-hook-form-mantine — React Hook Form bindings for every Mantine input. ⭐ 100+
• oxforge — Strict, opinionated Oxlint + Oxfmt presets. No slop.
• resume-template — JSON Resume → ATS-friendly LaTeX/PDF, with a reusable GitHub Action.

• delivery-dash — Multiplayer 3D coastal delivery racing for up to eight friends (React Three Fiber).
• lanternwake — A quiet time-loop puzzle where your past selves become your company.
• elsewhere-by-post — An impossible postcard map. Play it.
• starling-orbital-salvage — Godot arcade salvage across orbital sectors.

_{TypeScript · Go · Swift · C++ · Cloudflare Workers · Vercel · MCP}