Browser Login

Authenticate against a target site once, then vault the resulting session credentials so subsequent skills (browser-extract, browser-form-fill, browser-test) can reuse them without re-driving the auth flow. Borrows the pattern from Browserbase's cookie-sync/SKILL.md but stores the resulting context in AgentDB rather than on a hosted backend.

When to use

• Establishing reusable auth for a host the agent will visit repeatedly.
• Refreshing a vaulted cookie set whose expiry has passed.
• Capturing an MFA-protected session that requires interactive completion.

Steps

1. Open a recorded session via browser-record.
2. Drive the auth flow — fill credentials with browser_fill / browser_type. Credentials come from the user or environment; do not read them from .env or paste them into the trajectory args.
3. Handle MFA (when --mfa): pause for user input or invoke the user's TOTP helper; capture only the resulting redirect, not the code itself.
4. Capture cookies via browser_eval:

   document.cookie  // returns the cookie string for the active document