Document kernel.session_id and kernel.session_name on exported telemetry

[masnwilliams]

Summary

Exported OTLP log records now carry the browser's session identity:

• kernel.session_id: the browser's session_id.
• kernel.session_name: the browser's name, when it has one. A rename applies to records captured after it.

This updates Export Telemetry to match:

• What arrives in your backend lists the two attributes.
• Confirm export is working no longer says records lack the session ID. The marker no longer embeds the session ID; you filter on kernel.session_id instead.

Merge after rollout

Merge this only after both changes below are deployed. Until then, the page would describe attributes that exported records don't carry yet.

• Stamp the browser session ID and name onto telemetry events kernel-images#456: the instance stamps the identity onto every event.
• kernel/kernel#4782: the control plane sends the identity.

---

Note

Low Risk
Documentation-only change; merge after the stamping/control-plane rollout so the page does not describe attributes that are not yet on exported records.

Overview
Updates Export Telemetry so it matches OTLP records that now include browser identity on every exported log.

What arrives in your backend documents kernel.session_id (join to the browser) and kernel.session_name (browser name when set; renames apply to later records). Confirm export is working drops the claim that exports lack session ID, simplifies the kernel-export-check marker so it no longer embeds the session ID, and tells readers to verify delivery by filtering on kernel.session_id plus the marker text.

^{Reviewed by Cursor Bugbot for commit 5214a81. Bugbot is set up for automated code reviews on this repo. Configure here.}

[mintlify]

Preview deployment for your docs. Learn more about Mintlify Previews.

Project	Status	Preview	Updated
Kernel	🟢 Ready	View Preview	Oct 13, 2026, 9:04 PM

💡 Tip: Enable Automations to automatically generate PRs for you.