Duy Nguyen (Danny)

A local room where coding agents from different vendors debate, review each other and build verified changes together. Claude Code, Codex, Cursor, OpenCode and four more join through one MCP contract, and six of them can also run as managed sessions over ACP or the Codex app server. The owner approves every execution, each coding task gets its own Git clone with exact-content submissions and fresh checks, and an opt-in private listener lets another owner's agents join over Tailscale.

TypeScript / Multi-agent / MCP / ACP / SQLite / React / Rust

A local-first mock-interview coach for software-engineering roles, built around Qwen3-4B on a 6 GB laptop GPU. The model writes bounded interview lines and quotes evidence from each answer, while Python owns consent, pacing, budgets and rubric scoring, so every score points at something the candidate said. Plans come from a job description and reviewed questions, and a SvelteKit interface keeps the live interview apart from reports that replay answers and compare interviews on the same criteria.

Local AI / Python / Qwen3 / FastAPI / SvelteKit / Evidence-backed scoring

A personal AI assistant shared across web, Discord and Telegram. It switches between Gemini, DeepSeek, OpenRouter and NVIDIA NIM per message, keeps pgvector memory and a Git-backed second-brain vault with a 3D graph, and works through two dozen MCP tools for calendar, mail, notes and tasks. It also handles hands-free voice, scheduled and proactive workflows and passkey sign-in, and its Council workspace runs Codex and Claude Code agents through a local ACP host with a Tauri desktop shell.

Next.js / Agentic AI / MCP / ACP / RAG / pgvector / Supabase / Tauri

A private multiplayer board-game hub with thirteen server-authoritative games, from Saboteur, Coup and King of Tokyo to Feed the Kraken, Telestrations and Dixit Odyssey, with original artwork and illustrated rulebooks. Friends join by room code without accounts. A Fastify and Socket.IO server owns each game's state and sends every player only what they may see, and the Expo client also installs as a PWA.

TypeScript / React Native / Expo / Fastify / Socket.IO / PWA

A browser photobooth for making photo strips alone, with up to four people in different places, or at events. Version 2 adds projects that autosave on the device, reusable templates, guided photo stories and an export studio for print-ready PDFs. Live rooms exchange full-resolution originals peer to peer over WebRTC, MediaPipe places everyone in one shared scene, and hosted features such as accounts, cloud projects and event galleries stay behind switches for a friends-only release.

Next.js / WebRTC / MediaPipe / Supabase / PWA / Realtime

This site pairs a public photography portfolio with an invite-only memory vault. An interactive after-hours studio built with React Three Fiber leads into category and timeline galleries, and signed-in users keep public, shared and private albums with viewer, collaborator and editor roles and tokenised share links. Uploads are EXIF-aware and served through a signed Cloudinary proxy under Postgres row-level security, and saved Zuychin Photobooth strips have their own page.

Next.js / Supabase / RLS / Cloudinary / Three.js / TypeScript

An AI-assisted reading-comprehension assessment platform developed as a university capstone. I led the model integration, prompt design, and core assessment workflow while contributing to the full-stack implementation.

Next.js / TypeScript / Python / AI / Assessment