| name | daytona-chrome-cdp |
| description | Launch and control standalone Chrome in a Daytona sandbox via CDP. Use for web sign-in, OAuth, Den Web setup, browser-only flows, or when the app should not be driven through Electron CDP. |
Daytona Standalone Chrome CDP
Use this skill when a Daytona sandbox needs a normal Chrome/Chromium browser in
the XFCE display, separate from the Electron app. This is useful for Den Web
sign-in, OAuth provider setup, browser-only admin flows, and checking what a user
would see in a regular browser.
Launch Chrome
Run inside the Electron or server sandbox:
daytona exec "$SANDBOX" -- "bash -lc 'mkdir -p /tmp/daytona-chrome-profile; DISPLAY=:99 nohup chromium --no-sandbox --disable-dev-shm-usage --remote-debugging-address=0.0.0.0 --remote-debugging-port=9222 --user-data-dir=/tmp/daytona-chrome-profile \"$DEN_WEB_URL\" >/tmp/daytona-chrome.log 2>&1 &'"
If chromium is missing, try google-chrome, google-chrome-stable, or install
Chromium in the sandbox only when needed.
Get The CDP URL
CHROME_CDP_URL=$(daytona preview-url "$SANDBOX" -p 9222 2>/dev/null | grep -v '^time=')
Verify the target directly:
curl -fsS "$CHROME_CDP_URL/json/list"
Verify It Is Not Electron
The coded flow must assert that navigator.userAgent contains Chrome/ or
Chromium/ and does not contain Electron/.
Drive A Web Flow
Create or reuse an evals/flows/*.flow.mjs flow and set its cdpTarget to a
stable title or URL fragment for the standalone page. Drive the visible flow
with ctx.clickText, ctx.fill, ctx.waitFor, and ctx.screenshot, then run:
pnpm evals --flow <flow-id> --cdp-url "$CHROME_CDP_URL"
Validate with the fraimz loop. Do not assume navigation or sign-in worked
until the post-action URL, visible assertion, and frame prove it.
Common Uses
- Sign into Den Web while Electron remains on the desktop handoff screen.
- Complete OAuth approval pages from a mock or real provider.
- Configure web-only admin state before validating Electron sync.
- Compare Den Web behavior against Electron cloud account behavior.
Stop Chrome
daytona exec "$SANDBOX" -- "bash -lc 'pkill -f \"chromium.*remote-debugging-port=9222\" || pkill -f \"chrome.*remote-debugging-port=9222\" || true'"
