A Chrome extension and small web app that skips YouTube sponsor reads: Jev names transcript lines or answers yes/no about what it heard, and code owns every timestamp that gets cut.
Three modes: transcript only at under a cent per hour watched, Smart audio confirmation at about $0.05, and Listen-only streaming at about $0.46.
Long transcripts are scanned in 80-line windows, and Jev answers over L042-style line IDs that code maps back to seconds.
The pipeline scans windows in parallel, anchors around the winner, traces back to the first lead-in line, and repeats with the segment removed, up to six reads.
A skip only happens above the confidence you set, 70% by default, and only at a phrase Jev is at least 80% sure is sponsor.
Audio is captured from the video element itself, so no extra browser permission is needed and playback is untouched.
Quickstart
bash
npm install
cp .env.example .env
npm start
Watch out
No license file, so reuse terms are unclear. Needs a TypeSafe API key, and Smart and Listen modes also need a Deepgram key; transcript fetching uses YouTube's private InnerTube API through youtubei.js and can break when YouTube changes things.
A Chrome side panel that turns the current page's WebMCP tool schemas into typed Jev questions, predicting the tool call, its arguments, confidence, and latency as you type.
A Chrome and Firefox extension that scores a draft X post with Jev before posting: virality, clarity, ragebait, insult level, regret risk, and typo detection, plus a Send it / Sleep on it verdict.
Chrome and Firefox extension that reads a YouTube video's caption track and asks Jev for a sponsor probability per 30-second segment, painting the seek bar before the intro ends. It reports catching 77% of SponsorBlock's sponsor seconds across 23 videos at $0.0008 per video.
I've been using Jev by @typesafeai Here's the six things i've tried and am confident I'll still use Jev for 60 days from now.
There's many more experiments, ideas, and things I think I will use it for. It's a big deal (more on why in next post).
But I am only sharing thingsShow more
This made me rethink where AI actually fits into security engineering.
For purely engineering work, forget about ChatGPT or Claude.
TypeSafe AI just released Jev, and I think it’s going to change how we build AI into security workflows.
Instead of asking an LLM to “investigateShow more
TypeSafe AI
@typesafeai
we are officially out of stealth! join the frontier and get access to Jev on our website (link on profile)