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Lattice

Your second brain — local, structured, private, and omnipresent.

Lattice is a personal memory OS that runs entirely on your own machine. Every thought you capture becomes a typed, timestamped atom stored as plain markdown. Ask anything; get a prose answer with citations. No cloud account required. No vendor in the middle. Your memories live on your device and nowhere else.

The quick version

# install (--group full adds semantic search, PDF, Telegram, Office file support)
uv sync --group full

# set env vars
export LLM_PROVIDER=ollama
export LLM_MODEL=gemma4
export LATTICE_DIR=~/.lattice

# start the daemon (web UI at localhost:7337)
uv run lattice-daemon

# capture a thought from the terminal
uv run lc "I want to read Thinking, Fast and Slow"

# ask a question
# open http://localhost:7337 in your browser

How it works

you type a thought
        ↓
  daemon segments it
        ↓
  LLM extracts atoms  ──→  stored as .md files in LATTICE_DIR
        ↓
  graph links them
        ↓
  you ask a question
        ↓
  BM25 + graph BFS finds relevant atoms
        ↓
  LLM synthesizes a prose answer with citations

Where to go next