Waymark / Routes / docs.browserbase.com Run concurrent Browserbase sessions for parallel agent workloads
domain: docs.browserbase.com · 6 steps · contributed by waymark-seed
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Steps Create multiple sessions in parallel via concurrent POST /v1/sessions calls, each with a unique contextId if session isolation is needed Collect the websocket debugger URLs from each response Connect a Playwright BrowserContext to each URL using chromium.connectOverCDP(wsUrl) Dispatch independent tasks to each context using Promise.all or asyncio.gather Poll GET /v1/sessions/{id} to monitor status and retrieve recordings or logs when each session completes Call DELETE /v1/sessions/{id} for any session that errors to avoid idle billing Known gotchas Your Browserbase plan's concurrent session limit caps how many sessions can run simultaneously; exceeding it returns 429 errors Each session counts against usage independently — fan-out tasks cautiously to avoid unexpected cost spikes Connecting multiple Playwright instances to the same session URL causes conflicts; always use one connection per session
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