Getting started

OpenThunder Desktop is a free desktop app that bundles the local server and the CLI. Everything runs on your machine; no account is required.

1. Install

Download OpenThunder Desktop for macOS, Windows, or Linux from openthunder.dev. One file; open it like any desktop app.

Prefer zero install? The free diff review tool runs entirely in your browser: paste a git diff, get an instant change review. Nothing to download, nothing uploaded.

2. Open a repo

Launch OpenThunder and point it at any project folder. It maps the repo locally; no setup file is required to start.

3. First value, under 5 minutes

Each works offline with no AI key. Start with the signature move:

• Can I ship this? With a change in your working tree, get a SHIP / CAUTION / HOLD verdict with blast radius and file:line evidence: openthunder can-i-ship. This is the headline , see Decide if a change is safe to ship.
• Understand + prepare the repo. See the stack, services, and env a repo needs (and optionally prepare it): openthunder ready. See Get a repo development-ready.
• Run a scan. Read the Architecture, Security, or Code Health scorecard: openthunder scan (or openthunder lens).
• Give your agent context. A paste-ready context block for Claude Code, Cursor, Copilot, or Codex: openthunder context-pack.

4. Where to go next

• Verify an AI-generated change: the loop to run after your agent edits code.
• Core concepts and Evidence Packs: what Missions, Lenses, Change Verification, and evidence actually are.
• Connect your AI agent (MCP): let your agent query your repo directly.
• CLI reference: every command, generated from the real help output.