Kith

About

Kith is a knowledge companion for professionals who work with dense, domain-specific material every day.

**How it works**

1. Select any text on a page — a legal clause, a medical term, a code pattern, a design concept — and the Kith card appears with a contextual explanation shaped by the surrounding document.

2. Or drag over a chart, diagram, UI screenshot, or blueprint to get a visual analysis of what you marked.

3. Save the explanations worth keeping to The Archive, your private reference library that accumulates knowledge over time.

**Why context matters**

"Cell" means something different to a biologist than to a developer. Kith reads the surrounding material — page title, headings, nearby paragraphs — so the explanation fits the domain you are actually working in.

**Key features**

• Contextual text explanations — highlight any term and get an explanation aware of the surrounding page
• Visual region analysis — drag to capture charts, blueprints, medical imagery, or UI screenshots
• The Archive — save, search, and organize your explained concepts into a personal encyclopedia
• Go deeper — request expanded explanations when the initial summary isn't enough
• Related concepts — click related terms to continue exploring without leaving the card
• Private mode — reduce retained detail for sensitive work
• Site rules — allowlist, blocklist, or enable on all sites
• Hotkey support — Cmd+Shift+L to explain selection, Cmd+Shift+V for vision capture

**Built for trust**

The extension never calls AI model APIs directly. Every inference routes through the Kith backend. Your account, quotas, and billing state stay visible and explicit — not hidden inside the overlay.

**Plans**

• Trial — 3 days, 12 text explanations and 2 visual analyses per day
• Starter — 40 text and 10 vision per day
• Pro — 120 text and 30 vision per day

No data leaves the extension without your action. No background collection. No hidden telemetry.