Documentation

Debugging SSE and Network Channels in Chromium DevTools

Tracing Sever-Sent Events (SSE) and socket pipelines directly within modern browser panels.

Inspecting Live Stream Frames

Because Duplex operates entirely inside the client-side sandbox, all connections to local daemons and remote API Gateways are visible directly within Chromium’s Network Panel. Inspecting these is key to verifying encryption compliance.

Open DevTools (F12) and traverse to the Network Panel immediately.
Trigger a prompt and select the active request matching the respective lab URL (e.g. api.anthropic.com).
Navigate to the "EventStream" or "Response" tab to view raw websocket or event-stream chunks in real-time.