use-jev SKILL.md skillA
use-jev from openhands/extensions is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add openhands/extensions/use-jev@git:20261001.c4551cfPins git:20261001.c4551cf in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- openhands/extensions
- Path
skills/use-jev/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261001.c4551cf, committed Oct 1, 2026
- Size
- 3,221 bytes
- Repository stars
- 179
- License
- MIT
Use Jev, a general classifier, for typed choices, scores, and yes/no probabilities in software.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
[Jev](https://typesafe.ai) is a newly released general classifier. Give it text or application state and typed questions; it returns decisions and probabilities your code can use for routing, ranking, extraction, or verification. Read the upstream [llms.txt](https://docs.typesafe.ai/llms.txt) to find current documentation, then follow the pages relevant to the task: - [Use cases](https://docs.typesafe.ai/concepts/use-case-map.md): explore applications; see worked examples for [function calling](https://docs.typesafe.ai/cookbooks/function_calling.md), [reranking](https://docs.typesafe.ai/cookbooks/rerank_typesafe.md), and [citation checks](https://docs.typesafe.ai/cookbooks/citation_check.md). - [Best practices](https://docs.typesafe.ai/concepts/how-to-build-with-system-one.md): provide relevant state, ask focused questions, define clear criteria, and batch independent questions. Keep workflow logic in code. - [Confidence](https://docs.typesafe.ai/confidence.md): use uncertainty to decide when to escalate, and validate thresholds on representative data. - [Python SDK](https://docs.typesafe.ai/sdk/python.md), …
Read the whole file at its exact version.
How to install
mdr add openhands/extensions/use-jev@sha256:56bd6d2c1003d53aThe line at the top of this page pins the label git:20261001.c4551cf, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_ktlev5tqe57i3nvy)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Oct 1, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (3221 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
openhands/extensions · 179 stars · license MIT · pushed 2026-11-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ktlev5tqe57i3nvy GET https://markdownregistry.com/api/v1/resolve?ref=openhands/extensions/use-jev GET https://markdownregistry.com/api/v1/blob/56bd6d2c1003d53a5edb2a877889fa0fe62b72721e205ff91484ef47fa3bff32
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.