agent-browser Release Notes

Minor Changes

Full Native Rust

• 100% native Rust -- Removed the entire Node.js/Playwright daemon. The Rust native daemon is now the only implementation. No Node.js runtime or Playwright dependency required. (#754)
• 99x smaller install -- Install size reduced from 710 MB to 7 MB by eliminating the Node.js dependency tree.
• 18x less memory -- Daemon memory usage reduced from 143 MB to 8 MB.
• 1.6x faster cold start -- Cold start time reduced from 1002ms to 617ms.
• Benchmarks -- Added benchmark suite comparing native vs Node.js daemon performance.
• Chromium installer hardened -- Fixed zip path traversal vulnerability in Chrome for Testing installer.

Bug Fixes

• Fixed --headed false flag not being respected in CLI (#757)
• Fixed "not found" error pattern in to_ai_friendly_error incorrectly catching non-element errors (#759)
• Fixed storage local key lookup parsing and text output (#761)
• Fixed Lightpanda engine launch with release binaries (#760)
• Hardened Lightpanda startup timeouts (#762)

56bb92b:

Minor Changes

New Features

• Browserless.io provider -- Added browserless.io as a browser provider, supported in both Node.js and native daemon paths. Connect to remote Browserless instances with --provider browserless or AGENT_BROWSER_PROVIDER=browserless. Configurable via BROWSERLESS_API_KEY, BROWSERLESS_API_URL, and BROWSERLESS_BROWSER_TYPE environment variables. (#502, #746)
• clipboard command -- Read from and write to the browser clipboard. Supports read, write , copy (simulates Ctrl+C), and paste (simulates Ctrl+V) operations. (#749)
• Screenshot output configuration -- New global flags --screenshot-dir, --screenshot-quality, --screenshot-format and corresponding AGENT_BROWSER_SCREENSHOT_DIR, AGENT_BROWSER_SCREENSHOT_QUALITY, AGENT_BROWSER_SCREENSHOT_FORMAT environment variables for persistent screenshot settings. (#749)

Bug Fixes

• Fixed wait --text not working in native daemon path (#749)
• Fixed BrowserManager.navigate() and package entry point (#748)
• Fixed extensions not being loaded from config.json (#750)
• Fixed scroll on page load (#747)
• Fixed HTML retrieval by using browser.getLocator() for selector operations (#745)

Minor Changes

942b8cd:

New Features

• inspect command - Opens Chrome DevTools for the active page by launching a local proxy server that forwards the DevTools frontend to the browser's CDP WebSocket. Commands continue to work while DevTools is open. Implemented in both Node.js and native paths. (#736)
• get cdp-url subcommand - Retrieve the Chrome DevTools Protocol WebSocket URL for the active page, useful for external debugging tools. (#736)
• Native screenshot annotate - The --annotate flag for screenshots now works in the native Rust daemon, bringing parity with the Node.js path. (#706)

Improvements

• KERNEL_API_KEY now optional - External credential injection no longer requires KERNEL_API_KEY to be set, making it easier to use Kernel with pre-configured environments. (#687)
• Browserbase simplified - Removed the BROWSERBASE_PROJECT_ID requirement, reducing setup friction for Browserbase users. (#625)

Bug Fixes

• Fixed Browserbase API using incorrect endpoint to release sessions (#707)
• Fixed CDP connect paths using hardcoded 10s timeout instead of getDefaultTimeout() (#704)
• Fixed lone Unicode surrogates causing errors by sanitizing with toWellFormed() (#720)
• Fixed CDP connection failure on IPv6-first systems (#717)
• Fixed recordings not inheriting the current viewport settings (#718)

Minor Changes

94521e7:

New Features

• Lightpanda browser engine support - Added --engine flag to select the browser engine (chrome by default, or lightpanda), implying --native mode. Configurable via AGENT_BROWSER_ENGINE environment variable (#646)
• Dialog dismiss command - Added support for dismiss subcommand in dialog command parsing (#605)

Improvements

• Daemon startup error reporting - Daemon startup errors are now surfaced directly instead of showing an opaque timeout message (#614)
• CDP port discovery - Replaced broken hand-rolled HTTP client with reqwest for more reliable CDP port discovery (#619)
• Chrome extensions - Extensions now load correctly by forcing headed mode when extensions are present (#652)
• Google Translate bar suppression - Suppressed the Google Translate bar in native headless mode to avoid interference (#649)
• Auth cookie persistence - Auth cookies are now persisted on browser close in native mode (#650)

Bug Fixes

• Fixed native auth login failing due to incompatible encryption format (#648)

Documentation

• Improved snapshot usage guidance and added reproducibility check (#630)
• Added --engine flag to the README options table

Performance

• Added benchmarks to the CLI codebase (#637)