AI BriefingAI Navigation Record-and-Replay Agent
Key point
It saves a browser path that AI navigated once, then replays it later with zero tokens.
Details
The TypeScript-based @lightfeed/browser-agent records AI-performed browser navigation once, saves it as a plan, and then replays the same path afterward with 0 LLM calls.
The final segment that needs dynamic content is processed again with .extract(), and if the DOM has changed, aiFallback re-plans only the broken step to minimize token usage.
- Navigation Replay: Saves click, input, and scroll sequences so they can be run repeatedly
- Execution Environments: Supports Local Chromium, Serverless (AWS Lambda), and Remote CDP
- CLI Provided: Supports
run,replay,--no-ai-finish,--ai-fallback - Serverless Guidance: Recommends using
@sparticuz/chromium@133based on Playwright 1.49 - Configuration Flexibility:
savePlan(),replay(),executeTask(), andexecuteTaskAsync()are used with the same API
The published example shows a usage pattern of navigating to a Hacker News page and extracting top posts, where the stable navigation segment is replayed while only real-time data is read again.
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