Question 1

Can the extension put hallucinated text on my screen?

Accepted Answer

No. Jev answers noul, choice and score questions and returns probabilities, never prose, so every word on the card comes from a template the code already has. The verdict itself is a pure function in src/jev/verdict.ts with numeric thresholds you can move in options, which also means a bad verdict is a threshold you can point at rather than a prompt you have to rewrite.

Question 2

What gets sent to TypeSafe, and what never leaves the machine?

Accepted Answer

Page text, transcripts, feed titles and snippets, your goals text, and the titles of items you marked Read or Skip go to api.typesafe.ai and nowhere else — there is no server in the middle, no analytics and no telemetry. Your key, settings, reader state and cache live in chrome.storage.local. Turning on prefetch link text broadens this by fetching each feed link's page in the worker, which is why it asks for the <all_urls> permission.

Question 3

What does browsing cost, and what does feed mode do to the bill?

Accepted Answer

Jev bills $0.042 per million input tokens with output free. The README puts a 30-link Hacker News front page at about 34,000 tokens, roughly $0.0015, and a long article at 2,000 to 8,000 tokens. Feed items are judged in batches of up to 12 per call and cached for seven days, so revisiting the same front page costs nothing until the cache lapses or you change your goals.

Question 4

Why do I have to install it unpacked, and is the key check real?

Accepted Answer

It has not been submitted to the Chrome Web Store, so you download a release zip, enable Developer mode at chrome://extensions and load the folder. Onboarding then asks for a Jev key and verifies it with a single GET /v1/models call, storing it only if that succeeds — a wrong key is caught during setup rather than silently failing on every page you visit.

Question 5

What does it do on a page versus in a feed?

Accepted Answer

Page mode shows a card with the verdict and confidence, insight density, content type, how likely you already know it, claim support, sales-pitch and AI-written signals, and where the payload sits; on captioned videos, Skip to chips seek the player to the core idea. Feed mode badges each link that scrolls into view and judges items in batches of up to 12 per Jev call, cached for seven days.

Question 6

What are the four verdicts?

Accepted Answer

read now, skim, save or skip. Every word on the card is a template filled from typed answers, and the verdict comes from computeVerdict applying ordered threshold rules to the parsed answers and producing a label, a confidence and templated reasons.

Question 7

How do installation and key verification work?

Accepted Answer

Winnow is not on the Chrome Web Store, so you unzip a release and load it unpacked from chrome://extensions. Onboarding then asks for a Jev API key from console.typesafe.ai; Winnow makes one GET /v1/models call and stores the key only if that verification succeeds.

Winnow — ThinkyMiner

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