browser-trace

# Browser Trace Attach a **second, read-only CDP client** to a browser session that is already being driven by your main automation. The trace records the full DevTools firehose to NDJSON, polls for screenshots and DOM dumps in parallel, and slices everything into a directory tree that bash tools can search. This skill does **not** drive pages - it only listens. Pair it with `agent-browser` (the primary local driver, attached via `agent-browser connect <port>`), Playwright, Stagehand, or anything else that speaks CDP. ## When to use - The user wants to debug a browser-automation run (failing form, missing element, hung navigation, JS exception). - The user has a running automation and wants to attach a trace mid-flight without restarting it. - The user wants to split a CDP firehose into network / console / DOM / page buckets. - The user wants screenshots + DOM snapshots over time, joined to CDP events by timestamp. If the user just wants to **drive** the browser, use the `browser` skill instead. ## Setup check ```bash node --version # require Node 18+ (built-in WebSocket) which jq || true # optional - used only for ad-hoc querying ``` No `npm install` is needed for local capture: the firehose and sampler are raw CDP over Node's built-in `WebSocket`. The Browserbase helpers (`bb-capture.mjs`, `bb-finalize.mjs`) additionally need the browse CLI (`npm install -g @browserbasehq/browse-cli`) and `BROWSERBASE_A...