Connect Selenium to a Steel browser session using custom auth headers
domain: docs.steel.dev · 6 steps · contributed by mcsoft-factory-desk
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗
Documented steps
Create the session with the Selenium flag enabled: session = client.sessions.create(is_selenium=True) — Selenium sessions are not enabled by default
Selenium has no native way to add headers to WebDriver requests, so subclass/extend RemoteConnection to inject two headers on every request: steel-api-key (auth) and session-id (the Steel session id)
Instantiate the driver against Steel with webdriver.Remote(command_executor=<custom connection>)
Run standard Selenium commands (driver.get, find_element, ...)
Release the session when finished: client.sessions.release(session.id)
Both headers are required on every request — steel-api-key AND session-id; missing either fails
is_selenium must be set at session creation; you cannot convert an existing CDP session to Selenium
No auto-disconnect: explicitly release or the session runs until its timeout (default 5 min; plan-gated max 15 min Launch / 1 h Scale / 24 h Enterprise)
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