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Features

How ONA.UNO turns your saved knowledge into a useful, searchable knowledge base.

Capture From Everywhere (Without Changing Your Workflow)

ONA.UNO brings your information into a single timeline without moving your originals.

  • Files and folders — Index documents where they live: text/markdown, PDFs, images, and HTML.
  • Browser Clips (Chrome/Chromium + Safari) — Save any webpage in one click/shortcut; ONA.UNO converts it to clean Markdown and deduplicates by canonical URL.
  • Apple Mail — Index your Mail archive from local storage (no OAuth); choose accounts and date ranges.
  • Obsidian Vault — Markdown-first ingestion with frontmatter support (titles, tags, aliases) and deep links back to obsidian://.
  • Feedbin (Starred) — Your starred articles, imported with full text and kept in sync.

Everything lands in one place: a chronological timeline you can browse by day, tag, or source.

Captured items in the ONA.UNO timeline
AI pipeline processing stages in ONA.UNO

A Sophisticated AI Pipeline (That Runs Automatically)

Every item that enters ONA.UNO is enriched in the background:

  • Clean extraction (readability-based extraction for HTML, text extraction for PDFs, OCR for scanned PDFs and images)
  • YouTube transcripts when you clip YouTube videos (so spoken content becomes searchable)
  • Chunking + embeddings (so meaning, not just keywords, becomes searchable)
  • Micro summaries (short, scannable bullet points)
  • AI titles (descriptive names generated from content)
  • AI tags (topic labels you can click and browse)

The result: you don’t “file” things anymore — your knowledge organizes itself.

Summaries At Every Level

Scan fast when you’re busy. Go deep when you need detail.

  • Micro summaries are generated automatically for each item (short, scannable, consistent).
  • Long summaries can be generated on demand for a single item, a day, or a daypart.
  • Summaries can include citations so you can trace every claim back to its source.
Micro and long summaries in ONA.UNO
Search filters and query language in ONA.UNO

Search That Actually Finds Things

ONA.UNO is built for libraries with thousands (or tens of thousands) of items.

Choose the right tool for the job:

  • Titles — fast when you remember the name (includes AI-generated titles).
  • Titles, Tags & Summaries — full-text search across the “important” fields.
  • Titles, Tags & Full Content — search everything, including full note content.
  • Semantic (AI) — meaning-based search for “what was that thing about…” moments.

Chat With All Your Knowledge (With Citations)

Sometimes you don’t want to browse — you want to ask.

ONA.UNO chat is designed for serious, traceable answers:

  • Chat with all items in your library
  • Chat with a focused scope: a selection, a day or time of day (morning, afternoon, evening), a tag, or your current search results
  • Citations by default — answers include [#] references you can click to jump back to the source
  • Open original — jump from a citation directly into Obsidian, Finder, Mail, or the web page
  • Chat history — conversations are saved, reloadable, and renameable

This is not a generic chatbot. It’s a chat interface grounded in your sources.

Chat answers with citations in ONA.UNO

Two AI Modes: Online and Mixed

ONA.UNO gives you a clear choice depending on your hardware, costs, and privacy preferences.

Online Mode (Best Quality, Fastest Bulk Imports)

Online mode runs the full pipeline via OpenRouter:

  • Best-of-class embeddings and pipeline models (Qwen3 Embedding 8B + Gemini 2.5 Flash Lite)
  • Parallel processing for faster initial indexing
  • Built for Apple Silicon Macs
Online mode configuration for ONA.UNO

Mixed Mode (Cost-Effective, More On-Device)

Mixed mode runs high-volume pipeline stages locally (on Apple Silicon), while still using the best remote models when it matters:

  • Local embeddings + micro summaries + titles + tags (mxbai-embed-large + Qwen 2.5 7B)
  • Remote chat + long summaries (Gemini 2.5 Flash Lite or Grok 4.1 Fast)
  • Great for lower ongoing costs and offline pipeline processing

In both modes, you always see what’s happening: ONA.UNO tracks remote spend (month-to-date + last request) so there are no surprises.

Mixed mode setup and local model usage in ONA.UNO

Extensions and Integrations That Disappear Into Your Workflow

ONA.UNO is built to meet you where you already work.

Chrome + Safari Clipper

  • One click, shortcut, or context menu: Save to ONA.UNO
  • Converts pages to clean Markdown (excellent extraction quality)
  • Offline queue: clip now, imports later automatically when ONA.UNO is running
  • Smart deduplication by canonical URL
  • Export and import your clips as Markdown (useful for transfers and backups)
Chrome and Safari browser clipper for ONA.UNO

Obsidian Companion Plugin

Optional, but powerful:

  • Open in ONA.UNO App from the current note
  • Chat in ONA.UNO App about the current note
  • Status indicator showing whether ONA.UNO can see your vault
  • Works locally (no network required)
Obsidian companion plugin actions in ONA.UNO

Raycast Extension

Fast access without switching contexts:

  • Search Items — full-text search with live preview; open results in ONA.UNO or your browser via the Server browser-access surface
  • Recent Items and Recent Starred Items — jump straight to what you saved or starred
  • Clip Item — send a URL to ONA.UNO for clipping
  • Chat with All Items — start a new chat session instantly
  • Daily Summary — read today’s AI-generated summary without leaving Raycast

Two connection modes:

  • Local Mode — connects directly to ONA.UNO on your Mac
  • Remote Mode — connects via the Server browser-access surface to ONA.UNO on another Mac (great with Tailscale)
Raycast extension commands for ONA.UNO

Server: Browser Access

Open your ONA.UNO library in a browser on another device when that is more convenient than sitting at your Mac.

  • Browse your timeline and open item pages
  • Run search, including semantic search
  • Use chat with streaming answers and clickable citations
  • Clip a URL from mobile when you do not have a browser extension installed
  • Works well for phones, tablets, laptops, and Raycast remote mode

Security model:

  • Off by default, local network only when enabled
  • Password-protected login
  • Optional remote access via Tailscale with no port forwarding
Server browser access timeline and chat view for ONA.UNO

Use ONA.UNO Inside Claude and Other MCP Apps

If you already work in Claude Desktop, you can keep working there. ONA.UNO becomes part of that workspace instead of asking you to switch to a different AI app.

  • Use your existing Claude subscription to work with your ONA.UNO library inside Claude Desktop
  • Ask Claude to search, read, and chat across everything in your currently selected Set
  • Let Claude turn what it finds into action in tools like Notion, Workflowy, Heptabase, or Tana through their own MCP connections
  • Also works with other local MCP apps such as Claude Code, Codex, Cursor, and VS Code + Copilot

Setup is simple:

  • Open Settings → Server and copy the generated MCP config
  • Paste it into Claude or another MCP app and ONA.UNO appears there as a read-only knowledge source
  • Your results always follow the Set currently selected in ONA.UNO
  • ChatGPT is out of scope because it requires a remote HTTP/OAuth integration instead of a local MCP connection
ONA.UNO server features and connected library views
Native macOS timeline performance in ONA.UNO

Native macOS Performance

ONA.UNO is a native macOS app built for large libraries:

  • Smooth scrolling and fast UI, even with thousands of items
  • Search designed to stay responsive (you hit Enter to search, no sluggish “live search”)
  • Background processing that doesn’t block your work

Your Data, Your Control

  • Your originals stay where they are — ONA.UNO indexes, it doesn’t take over your files.
  • There is no ONA.UNO server that stores your content.
  • Cloud AI usage is BYOK (“bring your own key”) via OpenRouter, with hard spending limits you control.
  • Your content goes directly from your Mac to the AI provider over encrypted connections — we never see it.

If you want a tool that actually turns your saved content into a working knowledge base, ONA.UNO is built for that.

Explore the details