OnionLens. Get the sensor

Follow a request.

Issue a probe, follow its callback, and see the two linked. This demonstration records only a labelled experiment. No visitor records are shown.

Make the mechanism visible.

This is a real server round trip. You choose when to follow the callback, so its timing reflects your interaction.

Demo tokens carry a server-side class. A user-agent string or a claim to be testing cannot relabel an unsolicited callback.

Try the same workflow from an MCP client
CURRENT EXPERIMENTReady
No probe issued yet.
Traffic class
demo
Collection
Separate from unsolicited
Original transport
Not issued
Placement
Not issued
Read-to-act delay
Not started
Model identity
Unknown

Only the current experiment appears here. The research event feed remains private.