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CommunityRepos & SDKs5 starsVerified 2026-09-22

jev-tree

A TypeScript library that walks a taxonomy and calls Jev once per level, so a choice can cover thousands of leaves despite Jev's 255-option limit per question.

Category
Repos & SDKs
Published by
Community
Author
reachjalil
Added
2026-09-22
Tagscommunitytypescriptsdkclassificationtaxonomy

Highlights

  • Defaults to 32 options per Jev call and allows maxFanout up to 255; oversized sibling lists are partitioned into labeled buckets.
  • Node ids need not be legal Jev choice keys: the library sends o0, o1, and so on, then maps results back to your ids.
  • Timeouts and provider failures return reason unavailable instead of inventing a leaf; maxDepth 16 and maxCalls 64 also stop the walk.
  • On a 320-leaf incident catalog with 180 labeled tickets, truncating to 255 captured 0% of the tail while the authored tree recovered it.

Quickstart

bash
npm install jev-tree
npx jev-tree                         # offline demo, no key
npx jev-tree --live --shape taxonomy.json --state "the record"

Watch out

MIT-licensed. Live calls need an AI_GATEWAY_API_KEY for Vercel AI Gateway, not an OpenAI key, and the evaluation dataset is synthetic rather than production tickets.

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From the community

Posts from builders shipping with Jev right now.

Follow @typesafeai

A Claude session from 1M to 86K tokens

This is actually insane. This uses @typesafeai Jev model, as a plugin in Claude to review all the un-nesseasary tool calls, and it takes 1s to run! Like, literally, 1 second to take my Claude session from nearly 1M to ... 86K tokens! 😮 Ask your claude to install it and be  Show more

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tamara
tamara
@tamarajtran

found the perfect use case for @typesafeai Jev: instant compaction in 2026, why is compaction still a summarization prompt? Jev can make it instant by scoring every tool call and dropping what’s irrelevant

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Vercel's fx safety reviewer, 18x faster

We're seeing extraordinary results from @typesafeai. Default mode in 𝚏𝚡 is auto, with a safety reviewer analyzing every command. That reviewer runs on GPT Luna today. Jev is up to 18x faster (p95) *and* more accurate. It's coming to @vercel AI Gateway and likely new default.

Pranit
Pranit
Vercel
@fazxes

We benchmarked fx auto mode (safety) classifier with @typesafeai's Jev. tl;dr: ~5-18x faster and more accurate than 𝚐𝚙𝚝-𝟻.𝟼-𝚕𝚞𝚗𝚊, our current top choice

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Jev lands on OpenRouter

700 leads scored for $0.09

Beating Gemini Flash Lite on an eval

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