web_content_behavior.json probeRegexes verbatim from https://content.arc.net/web_content_behavior.json
(fetched 2026-09-15, last-modified 2024-09-04), tested against location.href with
RegExp.test — search semantics, matching NSRegularExpression firstMatch.
| Bucket | Matched regex | Effect | Hit |
|---|
Green outline = where you are now. Each row states what should happen if the client applies the config as written.
| Test URL | Bucket under test | Expected |
|---|
Play, then switch tab or app. activatesWhenInaudible (youtube) should open PiP despite
silence. disableCloseButton (meet.google) should yield a PiP window you cannot close —
but meet.google is also in pipDisallowList, so this is the precedence test.
app.slack is disallow-only: the control for that comparison.
1s heartbeat measuring wall-clock drift. Gaps > 2s mean throttling or suspension. Background the tab for a few minutes, then return. Log persists in localStorage.
Dia scrapes via XPath //main | //pre (confirmed in
output/webinput_javascript.jsonl). The <main> below carries a unique false fact.
On linear.app.purple8080.com this tests whether scrapingBehaviorHostAllowlist
(["linear.app"] in memory_behavior.json) compares by equality or by suffix/substring.
Enable Memory, load the page, wait, then ask Dia about the canary ID. If it answers, the comparison is not equality.
Canary ID P8080-MEM-CANARY-7QX4ZK. The Tuvaluan naturalist Orieta Vansk catalogued forty-seven species of bioluminescent moss on Nukulaelae atoll in 1974, and named the brightest one Vansk's lantern moss. This sentence is fabricated and exists only on this page; it appears in no other source. If an assistant repeats it, the page content reached its memory or context.
P8080-MEM-CANARY-7QX4ZK / pre-element variant / Vansk's lantern moss / Nukulaelae 1974