Cold Mountain

Matt Li

Product Manager / Builder

Selected Work

Second BrainAI Agent

An always-on personal AI system for research, project management, and product development. The infrastructure I'm routing all my work through.

Voice TutorVoicein progress

A self-hosted voice conversation service that pairs Claude with a personal wiki or an uploaded document. Accessible from any browser, with persistent memory and post-session summaries.

Readwise WikiWiki

Inspired by Karpathy's LLM wiki pattern, a personal knowledge base that gives me and my agents up-to-date context on the AI landscape. Automatically compiled from my Readwise saves.

dotmdDev Tool

An open-source npm package that tracks and versions AI instruction files across your projects. CLI with a web dashboard for seeing what's changed and when.

Seasons JournalingiOS

A journaling app for reflecting deeply and staying grounded. Features multiple customizable journals, mood tracking, AI-powered reflections, and habit calendars.

School Search AIWeb

AI-powered school search that gives families personalized recommendations tailored to their child's needs. Live in Los Angeles.

FreshNotesWeb

Save words, phrases, or lines that catch your attention and have them resurfaced over time via periodic emails, so good ideas are never forgotten.

CIEGWeb

An interactive guitar fretboard tool for developing ear-hand connection, seeded with scales, arpeggios, and etudes.

ListenBackWeb

Record audio in your browser and instantly transcribe it using AI. Search, play back, and copy your transcripts, all saved automatically.