PUBLIC PREVIEW — JUNE 2026

A personal AI
that actually
notices you.

Local. Private. Designed for a real relationship with you over time — not just chat.

Apple Silicon recommended
Fully local by default
Everything stays on your Mac
You review what it notices
Strong consent & safety model

Most AI is a tool.
Mugi is trying to be a person in your life.

Mugi runs entirely on your Mac. It has a real personality system you control (PERSONA.md, USER.md, etc.). Background processes quietly pay attention to patterns and connections — then surface what they’ve noticed in clear, reviewable places.

You can accept, reject, or correct anything. Nothing happens behind your back.

Protected personality
The agent cannot overwrite your core identity files after onboarding. You own them.
Reviewable memory
The “You” pane shows proposals from the background with diffs and provenance. You decide what sticks.
Work that waits for you
Anticipatory tasks surface in a Kanban board instead of acting silently.

Core experience + powerful tools for your world

Personal companion that notices

The heart of Mugi: long-term relationship, not one-off chats. Background processes observe patterns across your conversations, notes, and activity. Insights surface as reviewable proposals in the You pane or as concrete work in Kanban.

  • • Protected personality files (agent can't silently rewrite your identity)
  • • You pane with live diffs, provenance, and accept/reject
  • • Connections journal and pattern observations
  • • Checkpoints so the relationship has a visible history

AI-assisted note-taking & Vault

Capture thoughts, voice memos, research snippets, and project notes directly in the app. Mugi helps organize them with projects/folders and a live knowledge graph.

  • • “Discuss this” actions on any note or capture — context injected straight into chat
  • • Knowledge graph over your vault (neighbors, mentions, suggestions)
  • • Inline attachments (audio, images, files) that stay linked and searchable
  • • Sidebar navigation with All Notes + per-project views
  • • AI can read, suggest, or help synthesize from your own notes
Integrated into the main sidebar and right panels. Part of the same personal memory fabric as the You pane.

Knowledge Base — make Mugi an expert on your stuff

Feed Mugi folders, documents, codebases, or research collections. It digests them into a durable, queryable expert knowledge base with synthesis, sources, entities, contradictions, and a graph.

  • digest_corpus tool + Settings → Knowledge admin UI
  • • Structured output: synthesis.md, sources/, connections, graph edges
  • • Hybrid search + “Ask the corpus” with citations
  • • Stale refresh, folder watch, background automation
  • • “Discuss this” style actions across the digested material
Why it matters

Unlike generic RAG, Mugi compiles a real “expert” version of your material with explicit synthesis, provenance, and graph relationships. You can query it conversationally and the results feed back into the personal noticing layer.

See the Knowledge Library and Settings → Knowledge panes for corpus management, progress, and search.

PUBLIC PREVIEW

This is an early public preview

Not a finished product. A serious attempt at something new, released so real people can tell us if the direction is worth pursuing.

What’s working well

  • Native Mac experience with thoughtful surfaces
  • Protected personality files + strong write guards
  • “You” pane for reviewing what the background has learned
  • Consent-first background autonomy (Kanban, proposals, Activity)
  • Vault note-taking with graphs + “Discuss this”
  • Knowledge Base corpus digestion with synthesis & sources
  • Recent focused improvements to noticing, persistence, and reliability

What’s still early

  • The personal noticing system is powerful but new — feedback will shape it heavily
  • Vault graph interactions and “Discuss this” flows are functional but will benefit from real usage polish
  • Knowledge corpus management (large collections, graph exploration) has edges
  • Not every advanced flow is polished
  • Some planned features (Telegram adapter, streaming voice, etc.) are not yet built
  • First public release from a solo developer
Full details: About this preview

Download Mugi

The latest public preview is available directly. The app includes automatic updates via Sparkle once installed.

Download for Apple Silicon
macOS 15.0+ • Signed & notarized • ~37 MB
After the first launch you’ll see the license agreement. See about this preview and the license agreement before installing.

Documentation & manual

A proper user manual written for everyday people (with power-user sections) is already available, including dedicated coverage of the Vault and Knowledge Base.

The manual covers installation, first launch, the personality system, Vault note-taking & graphs, Knowledge corpus management, Settings, background automation, troubleshooting, and example workflows that combine the personal companion with your own notes and documents.