Observe
Reads chat text only on sites the user grants permission to.
Ephemeral experience layer
EphUX
A user-owned reasoning-integrity overlay for live AI sessions. Quiet by default, precise when it speaks.
The surface
Not a dashboard. A threshold surface.
EphUX materializes when a live AI session shows a reasoning-integrity pattern: sycophancy, drift, unsupported assertion, or instruction deviation. The surface gives evidence, offers a counter-prompt, and then gets out of the way.
- Local-first detection in the browser.
- Zero-retention mode by default.
- User authority at every intervention level.
- No claim to prove truth or replace judgment.
First vehicle
A browser extension for the AI surfaces people already use.
Detect
Runs local heuristics for reasoning-integrity patterns.
Surface
Shows a compact overlay only when a threshold is crossed.
Return
Dissolves after the user dismisses, inspects, or applies a counter-prompt.
Operating principles
The name is the interface doctrine.
Ephemeral. The interface exists only when the moment asks for it.
Evidence-first. EphUX reports what it observed, not what the user must believe.
User-owned. Notify and recommend by default. Rebuild always requires explicit approval.