Route computer and playwright calls directly to the VM - #157
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Add computer and playwright to the default browser routing allowlist so screenshot and execute traffic can skip the control plane once metro-api records activity on the kernel proxy.
The default now includes computer and playwright, not just curl.
The asserted list can grow; the test name should not.
tnsardesai
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August 20, 2026 23:06
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Summary
Default direct-to-VM routing now includes
computerandplaywrightin addition tocurlandtelemetry/stream.computer/screenshotandplaywright/executerewrite to{base_url}/...with the session JWT and dropAuthorization.process/*,fs/*, andtelemetry/eventsstay on the API origin.KERNEL_BROWSER_ROUTING_SUBRESOURCESstill overrides the default list. An empty value still disables routing.Metro-api activity recording for
/browser/kernel/*has been merged in kernel/kernel#3417. That was the hard gate for this allowlist flip. The kill switch is leavingbase_urlunset or settingKERNEL_BROWSER_ROUTING_SUBRESOURCESto empty.Latency (eu-west)
Same hop skip as the Node/Go SDKs. Comparison script: https://gist.github.com/tnsardesai/6704dfc86e2c0785e03beaf274aa672d
Same
eu-westsession. Published SDK still hitsapi.onkernel.com; this allowlist rewrite hits metro-api.Test plan
curl,telemetry/stream,computer,playwrightNote
Medium Risk
Changes default request routing and auth for computer/playwright APIs (JWT on the VM instead of API Authorization). Wrong allowlist matching would send control-plane-only paths to the VM.
Overview
Default direct-to-VM routing now includes
computerandplaywrightalongsidecurlandtelemetry/stream. Screenshot and Playwright execute requests rewrite to the sessionbase_urlwith a JWT query param and dropAuthorization.process/*,fs/*, andtelemetry/eventsstill hit the control-plane API.KERNEL_BROWSER_ROUTING_SUBRESOURCESstill overrides the list; an empty value still disables routing.Reviewed by Cursor Bugbot for commit 1b28d62. Bugbot is set up for automated code reviews on this repo. Configure here.