nw-pbt-jvm SKILL.md skillA
nw-pbt-jvm from nwave-ai/nwave is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add nwave-ai/nwave/nw-pbt-jvm@git:20260320.d98f3cbPins git:20260320.d98f3cb in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- nwave-ai/nwave
- Path
nWave/skills/nw-pbt-jvm/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260320.d98f3cb, committed Mar 20, 2026
- First version recorded
- Mar 17, 2026
- Size
- 5,687 bytes
- Repository stars
- 633
- License
- MIT
JVM property-based testing with jqwik, ScalaCheck, and ZIO Test frameworks.
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
# PBT JVM -- jqwik (Java/Kotlin) + ScalaCheck + ZIO Test
## Framework Selection
| Framework | Language | Shrinking | Stateful | Choose When |
|-----------|----------|-----------|----------|-------------|
| jqwik | Java/Kotlin | Integrated | Yes (actions) | Java/Kotlin projects (recommended default) |
| ScalaCheck | Scala | Type-based | Yes (Commands) | Scala projects (established choice) |
| ZIO Test | Scala | Integrated | Via effects | ZIO-based Scala projects |
## Quick Start (jqwik)
```java
import net.jqwik.api.*;
class SortProperties {
@Property
void sortPreservesLength(@ForAll List<Integer> list) {
List<Integer> sorted = new ArrayList<>(list);
Collections.sort(sorted);
Assertions.assertEquals(list.size(), sorted.size());
}
}
// Run: ./gradlew test (or mvn test)
```
## Generator (Arbitrary) Cheat Sheet (jqwik)
```java
@ForAll int x // any int
@ForAll @IntRange(min = 0, max = 99) int x
@ForAll @StringLength(min = 1, max = 50) String s
@ForAll @Size(min = 1, max = 10) List<Integer> list
// Custom provider
@Provide
Arbitrary<String> emails() {
…Read the whole file at its exact version.
How to install
mdr add nwave-ai/nwave/nw-pbt-jvm@sha256:6dd65d7bdf62d1fbThe line at the top of this page pins the label git:20260320.d98f3cb, 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_pkboq7hu7fx7c57j)
0 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Mar 17, 2026 and Mar 20, 2026, about one every day.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260320.d98f3cb latest | 2026-03-20 | d98f3cb | 5,687 B | A | view · diff |
| git:20260318.e6a0e19 | 2026-03-18 | e6a0e19 | 5,665 B | A | view · diff |
| git:20260317.1d16147 | 2026-03-17 | 1d16147 | 5,656 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 (5687 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
nwave-ai/nwave · 633 stars · license MIT · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_pkboq7hu7fx7c57j GET https://markdownregistry.com/api/v1/resolve?ref=nwave-ai/nwave/nw-pbt-jvm GET https://markdownregistry.com/api/v1/blob/6dd65d7bdf62d1fb709be10306b4146958558cbec7b70fb86c52ad09b7e8cba0
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.