ClaudSkills / Engineering / engineering-misc

Nullaway Configure

Q: What is a Claude Code skill and how does the Nullaway Configure skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Nullaway Configure is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Engineering · Sub-category: engineering-misc · Last updated: 2026-06-13

lang:kotlin lang:java

Use when wiring NullAway (JSpecify mode) into a Java build so nullness violations fail compilation — configuring Error Prone + NullAway in a Gradle Groovy build.gradle, a Gradle Kotlin build.gradle.kts, or a Maven pom.xml, picking the jspecifyMode/onlyNullMarked/RequireExplicitNullMarking knobs, and choosing plugin versions and the JDK/release baseline.

From the source SKILL.md

NullAway is an Error Prone plugin that checks JSpecify nullness at compile time and turns violations into build failures. Companion to jspecify-userguide / jspecify-spring-null-safety (the annotation rules) — this skill is the build wiring that enforces them. Versions below are from the reference demo; check for newer releases.

What this skill does

Nullaway Configure is a community-contributed Claude Code skill in the engineering-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/nullaway-configure/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when wiring NullAway (JSpecify mode) into a Java build so nullness violations fail compilation — configuring Error Prone + NullAway in a Gradle Groovy build.gradle, a Gradle Kotlin build.

Who uses this skill

The Nullaway Configure Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 120,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/nullaway-configure
curl -L https://claudskills.com/skills/nullaway-configure/SKILL.md \
  -o ~/.claude/skills/nullaway-configure/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/nullaway-configure/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/nullaway-configure/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\nullaway-configure\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

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See pricing → Download desktop app

Frequently asked questions

How do I install the Nullaway Configure Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/nullaway-configure/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Nullaway Configure skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Nullaway Configure skill?

Use Nullaway Configure when your Claude Code task falls under the Engineering category — specifically in the engineering misc area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Nullaway Configure" or describe the task and let Claude pick). Browse related skills at /category/engineering/.

What is a Claude Code skill and how does the Nullaway Configure skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Nullaway Configure is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/anohabbah/skills/blob/6ee793c2a0be68b1d35500584ded1dbb52abf2e5/skills/nullaway-configure/SKILL.md
Author: anohabbah

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

anohabbah. (2026). Nullaway Configure [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/nullaway-configure/

BibTeX

@misc{nullaway-configure-2026,
  author    = {anohabbah},
  title     = {Nullaway Configure [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/nullaway-configure/}
}

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