SSentinel
Features

Everything the terminal does

Pro-grade markets in a fast, keyboard-first desktop app — built on open parts, with no data bill.

Command-driven

Everything happens from one command bar. Type a symbol and a function code — AAPL GP, NVDA FA, EURUSD STAT — and the focused panel retargets instantly. No menu-diving, no mouse: your hands stay on the keyboard, and the muscle memory transfers straight from the professional desks this is modeled on.

Real-time, end to end

Market data travels from the exchange to your screen as binary protobuf over a NATS backbone — no polling, no JSON bloat. The result is sub-second quotes and candles that build in front of you, the moment trades print.

Dockable workspace

Build the layout that fits how you work. Every function opens in a dockable panel you can split, tab, and rearrange; Enter retargets the focused panel and Shift+Enter splits a new one — and your arrangement autosaves between sessions, so you pick up exactly where you left off.

Zero licensing cost

Pro-grade coverage with no data bill: every feed is a free, keyless public source — Coinbase, Yahoo, the ECB, the U.S. Treasury, and SEC EDGAR — adapted into one canonical schema so every function behaves identically across markets.

Native, not a web app

A genuine native macOS app built with Tauri 2 — not an Electron shell or a browser tab. That means a small download, low memory use, and proper OS integration.

Per-feed entitlements

Access is governed per feed: bcrypt-hashed credentials issue a JWT, and per-symbol grants are enforced on the live stream, on every REST call, and across internal service calls — so entitlements hold no matter how the data is requested.

Coverage

Five asset classes, one canonical schema

Every provider is adapted into the same OHLCV / quote shape, so functions behave identically across markets.

Crypto
Coinbase

Live trade ticks and 1-minute candles.

Equities
Yahoo

US stocks: quotes, daily history, option chains.

FX
ECB · Frankfurter

Daily reference fixings for major pairs.

Fixed income
US Treasury

Par yield curve by tenor, 1M to 30Y.

Options
Yahoo

Chains with greeks and implied volatility.