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Live typed judgment of the Bluesky firehose: Jev on Cloudflare Durable Objects, one call per post, uncertain calls routed to a human lane
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- 1
- Last pushed
- Updated Oct 2026
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Jev directory
CommunityJev Demos & Experiments
Firehose Judge
Watches the Bluesky firehose and asks Jev eight questions about every sampled post in one call, covering intent, topic, sentiment, engagement bait, hostility, sarcasm, bot-ness and screen safety, then routes anything the model will not commit to into a needs-a-human lane. Live at cloutmetrics.ai.
- Stars
- 0
- Language
- TypeScript
- License
- MIT
- Reading time
- 2 min
- Published by
- Community
- Author
- Leo Mata
- Last verified
- Oct 2026
- Languages
- TypeScript
- Platforms
- Cloudflare
- Capabilities
- Open sourceRequires API key
Highlights
- One Durable Object holds the Jetstream websocket, samples posts with a token bucket, asks Jev eight questions per post and fans results to viewers.
- It only runs while someone is watching: when the last tab closes, the heartbeat alarm drops the stream, so an idle deploy costs nothing.
- Posts Jev flags as unsafe are dropped server-side and counted, never sent to browsers; the only name the code cares about is nsfw.
- Knobs in wrangler.jsonc: JUDGE_RATE_PER_SEC 3, MAX_INFLIGHT 8, JETSTREAM_URL, TYPESAFE_MODEL jev-latest and PRICE_PER_M_INPUT 0.042 for the cost counter.
- Questions live in questions.json; changing them re-renders the page, with choices as probability bars, scores as meters and nouls as pills.
Quickstart
bash
npm install
echo 'TYPESAFE_API_KEY=...' > .dev.vars
npx wrangler devWatch out
Grounded in the truncated repository README and GitHub metadata reviewed on 2026-10-15; the per-post cost and latency are the README's own figures, the API endpoint table was cut off, and the app needs a Cloudflare account and a TypeSafe key. It is MIT-licensed with 0 stars.
Questions about this entry
Short answers drawn from the linked project or page.
It watches the Bluesky firehose and asks Jev eight questions about every sampled post in a single call: intent, topic, sentiment, engagement bait, hostility, sarcasm, bot-ness and screen safety, returning typed distributions in a few hundred milliseconds.
Anything the model will not commit to slides into a second lane labelled needs a human, so you can watch it be certain about spam and hesitate over sarcasm. Review thresholds live in src/jev.ts, with scores given a lower bar than choices.
npm install, put TYPESAFE_API_KEY in .dev.vars, then npx wrangler dev and open http://localhost:8787. Deploy with npx wrangler secret put TYPESAFE_API_KEY followed by npx wrangler deploy.
The README quotes about three thousandths of a cent per post and notes the cost counter uses PRICE_PER_M_INPUT 0.042. Idle deploys cost nothing because the Durable Object drops the firehose when the last viewer leaves.
Yes. JETSTREAM_URL accepts any Jetstream instance or websocket that emits posts; you replace onPost in src/firehose.ts for other events. TYPESAFE_MODEL is jev-latest by default and can be pinned once thresholds are tuned.
Everything the model is asked lives in questions.json. Change the questions and the page re-renders from the schema, with choices as probability bars, scores as meters and nouls as pills; only the name nsfw drives the server-side drop.
ragelink (Leo Mata) built it under MIT; it had 0 stars and 1 fork at review time. The per-post cost is the README's own figure, the app needs a Cloudflare account and a TypeSafe key, and it judges only sampled posts, not the whole stream.
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X: Search and tagging on keep.md
Reddit: Jev is on Workers AI as typesafe/jev
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