Quickstart: first task in 2 minutes
- Install into your client (tabs below). One JSON block, or one click in Cursor or VS Code.
- Restart your client. You should see Reflex's tools listed.
- Sign in once: ask your agent to run
reflex_authwithaction: "login". It opens your browser, authenticates you, and saves a key locally — no manual copying. Already signed up on the site? You can paste your key from the welcome screen instead. - Ask: "Open news.ycombinator.com and tell me the top 3 stories." Your agent will call
reflex_openonce and answer. That's 1 credit. - Try something with steps: "Log into my staging app and check the orders page for anything red." A typical multi-step task is 2-3 credits.
Install into your client
Fastest: the one-click desktop extension. Download the bundle, double-click, and paste your API key when prompted. It ships its own runtime, so you do not need Node installed.
Or paste this into your config manually (needs Node 18+):
json
{
"mcpServers": {
"reflex": {
"command": "npx",
"args": [
"-y",
"reflex-browser@latest",
"mcp"
]
}
}
}Config path: macOS ~/Library/Application Support/Claude/claude_desktop_config.json, Windows %APPDATA%\Claude\claude_desktop_config.json. Restart Claude Desktop fully (quit from the menu bar, not just close the window).
Platform: macOS supported today; Windows is beta (see troubleshooting). After install, run reflex_auth with action: "login" to sign in — or paste a key from your welcome screen.