ja SKILL.md skillA
ja from netflix/ja is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add netflix/ja/ja@git:20261104.0eda6c6Pins git:20261104.0eda6c6 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- netflix/ja
- Path
src/com.netflix.tools.ja/META-INF/com.netflix.tools/skills/ja/SKILL.md- Versions recorded
- 7
- Latest version
- git:20261104.0eda6c6, committed Nov 4, 2026
- First version recorded
- Oct 31, 2026
- Size
- 7,198 bytes
- Repository stars
- 79
- License
- Apache-2.0
Develop and understand Java projects with the `ja` command-line environment. Use for build-aware Java code navigation, source and API lookup, Gradle or Maven project contexts, module dependencies, formatting, compilation, tests, benchmarks, packaging, and direct use of JDK tools.
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
# ja `ja` is a terminal development environment for Java. It discovers Java module, Gradle, and Maven projects and supplies commands and tools with the sources, dependencies, class paths, module paths, and Java options for the selected project context. The working directory selects the build and provides a useful focus. Java insight commands search every discovered Java context when run at the build root, narrow to an enclosing project or source file when possible, and merge duplicate results. Use `-C <directory>` to change the working directory before project discovery, or `-p <selector>` to focus a command on an explicit project context. Run `ja <command> --help` for complete command syntax. ## Select the project context When the automatic selection is not obvious, start with: ```bash ja projects ``` …
Read the whole file at its exact version.
How to install
mdr add netflix/ja/ja@sha256:121fcc26549ffaceThe line at the top of this page pins the label git:20261104.0eda6c6, 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_44mbvtlg477ccu4e)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 7 versions of this file, between Oct 31, 2026 and Nov 4, 2026, more than one a day.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261104.0eda6c6 latest | 2026-11-04 | 0eda6c6 | 7,198 B | A | view · diff |
| git:20261104.9cda50c | 2026-11-04 | 9cda50c | 6,794 B | A | view · diff |
| git:20261104.4e557e3 | 2026-11-04 | 4e557e3 | 6,524 B | A | view · diff |
| git:20261104.52a3c73 | 2026-11-04 | 52a3c73 | 6,381 B | A | view · diff |
| git:20261103.55fc223 | 2026-11-03 | 55fc223 | 5,976 B | A | view · diff |
| git:20261102.46a60d0 | 2026-11-02 | 46a60d0 | 5,711 B | A | view · diff |
| git:20261031.fd7fe4a | 2026-10-31 | fd7fe4a | 5,554 B | A | view |
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 (7198 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
netflix/ja · 79 stars · license Apache-2.0 · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_44mbvtlg477ccu4e GET https://markdownregistry.com/api/v1/resolve?ref=netflix/ja/ja GET https://markdownregistry.com/api/v1/blob/121fcc26549fface3d906891956c325f341b862f3182cd1f3122192a1610fa99
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.