Runs locally
The proxy listens only on 127.0.0.1. No telemetry, no cloud — credentials live in your OS
keychain.
Sentinel documentation
Sentinel is an open-source companion for Claude Code and the Claude Desktop app: a tray app and a bundled local daemon that sit between Claude and Anthropic’s API. From one control panel you can scan and sandbox every request, enforce permission rules, route across the Claude accounts you own, cut wasted tokens, and catch overage spend before it runs away — all without your data ever leaving your machine.
Transparent to Claude Code
One activation writes ANTHROPIC_BASE_URL into Claude Code’s settings; one click routes Claude
Desktop through the same proxy. Everything else is pass-through.
Cross-platform
macOS, Windows, and Linux. A single Tauri tray app with an embedded daemon sidecar.
Open source
MIT licensed. Build it from source or grab a signed, notarized release.
Start here
Section titled “Start here” Introduction What Sentinel is, how it fits with Claude Code, and the architecture at a glance.
Installation Download and install on macOS, Windows, or Linux.
Quick start Activate the proxy, point Claude Code at it, and enroll your first account.
Features A page for everything Sentinel does, mapped to the tabs in the app.
What’s in these docs
Section titled “What’s in these docs”- Getting Started — install, first launch, and a five-minute quick start.
- Features — one page per capability: accounts & routing, security scanning, permission rules, sandbox isolation, usage, metrics, token optimization, and alerts.
- Guides — task-oriented how-tos (connect Claude Code, set up automatic account switching, sync permissions, enable the sandbox, reduce token costs, track overage).
- Reference — the settings catalog, tray & window behavior, troubleshooting, and the privacy & security model.
- Developers — architecture, building from source, project layout, testing, debugging, and the release process.