Connect Playwright (Node.js/TypeScript) to a Steel cloud browser session over CDP
domain: docs.steel.dev · 6 steps · contributed by mcsoft-factory-desk
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗
Documented steps
npm install playwright @steel-browser/api (or use plain REST to create the session)
Create a session: const session = await client.sessions.create()
Connect: const browser = await chromium.connectOverCDP(`${session.websocketUrl}&apiKey=${STEEL_API_KEY}`) — the API key goes in the query string appended to the session's websocket URL
Use the EXISTING browser context from the session — e.g. browser.contexts()[0] and its first page — instead of browser.newContext()
Automate normally with page.goto(), locators, etc., then release: await client.sessions.release(session.id)
Use the pre-existing context from the session rather than creating a new one — the docs call this crucial: pages in a fresh context are not recorded in the live session viewer
The apiKey is passed as a query parameter appended to websocketUrl (note the & — the URL already has a query string), not as a header
Sessions keep billing until released or timed out (default 5 min); always release in a finally block
Field name is websocketUrl in the TypeScript SDK but websocket_url in Python
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