Browser Trace

node --version                                  # require Node 18+
which browse || npm install -g browse
which jq     || true                                # optional — used only for ad-hoc querying

browse --help | grep -q "^\s*cdp " || echo "browse cdp not available — update browse"

# 1. Launch Chrome with a debugger port (any user-data-dir keeps it isolated).
"/Applications/Google Chrome.app/Contents/MacOS/Google Chrome" \
  --remote-debugging-port=9222 \
  --user-data-dir=/tmp/chrome-o11y \
  about:blank &

# 2. Start the tracer.
node scripts/start-capture.mjs 9222 my-run

# 3. Run your main automation against port 9222.
browse open https://example.com --cdp 9222
# ...whatever the run does...

# 4. Stop and bisect.
node scripts/stop-capture.mjs my-run
node scripts/bisect-cdp.mjs my-run

export BROWSERBASE_API_KEY=...

# 1. Create a keep-alive session AND start the tracer in one step.
#    Prints the session id, connectUrl prefix, and a live debugger URL you
#    can open in a browser to watch the run interactively.
node scripts/bb-capture.mjs --new my-run

# 2. Drive automation. bb-capture stamped the session id into the manifest.
SID=$(jq -r .browserbase.session_id .o11y/my-run/manifest.json)
CONNECT_URL="$(browse cloud sessions get "$SID" | jq -r .connectUrl)"
BROWSE_NAME=my-run-browser
browse open https://example.com --cdp "$CONNECT_URL" --session "$BROWSE_NAME"
browse open https://news.ycombinator.com --session "$BROWSE_NAME"

# 3. Stop the tracer, bisect, then pull platform artifacts and release.
node scripts/stop-capture.mjs my-run
node scripts/bisect-cdp.mjs my-run
node scripts/bb-finalize.mjs my-run --release

# Pick a running session (filter client-side; browse cloud sessions list has no --status flag)
browse cloud sessions list | jq -r '.[] | select(.status == "RUNNING") | .id'

node scripts/bb-capture.mjs <session-id> mid-flight-debug
# ...tracer runs alongside the existing automation client; no disruption...
node scripts/stop-capture.mjs mid-flight-debug
node scripts/bisect-cdp.mjs mid-flight-debug
node scripts/bb-finalize.mjs mid-flight-debug   # without --release: leave the session running

.o11y/<run-id>/
  manifest.json                 run metadata: target, domains, started_at, stopped_at
  index.jsonl                   one line per sample: {ts, screenshot, dom, url}
  cdp/
    raw.ndjson                  full CDP firehose (one JSON object per line)
    summary.json                {sessionId, duration, totalEvents, pages[]} — see shape below
    network/{requests,responses,finished,failed,websocket}.jsonl   session-wide buckets (always written)
    console/{logs,exceptions}.jsonl
    runtime/all.jsonl
    log/entries.jsonl
    page/{navigations,lifecycle,frames,dialogs,all}.jsonl
    dom/all.jsonl                                                  (only if O11Y_DOMAINS includes DOM)
    target/{attached,detached}.jsonl
    pages/                      per-page slices, indexed by top-level frameNavigated boundaries
      000/                      first concrete page
        url.txt                 the URL for this page
        summary.json            this page's domains/network/timing block (same shape as a pages[] entry)
        raw.jsonl               firehose scoped to this page
        network/, console/, page/, runtime/, log/, target/, dom/    same buckets, only non-empty files
  screenshots/<iso-ts>.png      one PNG per sample interval
  dom/<iso-ts>.html             one HTML dump per sample interval
  browserbase/                  added by bb-finalize.mjs (Browserbase runs only)
    session.json                final `browse cloud sessions get` snapshot (proxyBytes, status, ended_at, …)
    logs.json                   `browse cloud sessions logs` output (often [])
    downloads.zip               `browse cloud sessions downloads get` output (only if the session downloaded files)

{
  "sessionId": "45f28023-…",
  "duration": { "startMs": 1777312533000, "endMs": 1777312609000, "totalMs": 76000 },
  "totalEvents": 420,
  "pages": [
    {
      "pageId": 0,
      "url": "https://example.com/",
      "startMs": 1777312533000, "endMs": 1777312538886, "durationMs": 5886,
      "eventCount": 60,
      "domains": {
        "Network": { "count": 18, "errors": 1 },
        "Console": { "count": 2 },
        "Page":    { "count": 24 },
        "Runtime": { "count": 13 }
      },
      "network": { "requests": 4, "failed": 1, "byType": { "Document": 2, "Script": 1, "Other": 1 } }
    }
  ]
}

node scripts/query.mjs my-run list                    # one-line table of pages
node scripts/query.mjs my-run page 1                  # full summary for page 1
node scripts/query.mjs my-run page 1 network/failed   # cat failed.jsonl for page 1
node scripts/query.mjs my-run errors                  # all errors across pages, attributed by pid
node scripts/query.mjs my-run errors 2                # errors from page 2 only
node scripts/query.mjs my-run hosts                   # top hosts by request count
node scripts/query.mjs my-run host api.example.com    # all requests/responses for a host
node scripts/query.mjs my-run summary                 # full summary.json