Skill comparison
Compare agent skills before installing.
Put high-signal skills side by side and inspect quality, adoption, freshness, install readiness, use-case fit, and warnings in one place.
Comparing 4 skills
Use this as a shortlist, then open the skill detail page before adopting.
Decision summary
Checkstyle is the strongest overall pick here because it has a 100/100 readiness score and fits Coding agents.
Strongest overall
Checkstyle
Use this as a leading candidate, then validate the README and install path in your own agent stack.
Fastest prototype
Checkstyle
Best first install candidate based on install readiness and adoption.
Freshest repo
Spotbugs
Most recent maintenance signal among this shortlist.
| Signal | Checkstyle Checkstyle is a development tool to help programmers write Java code that adheres to a coding standard. By default it supports the Google Java Style Guide and Sun Code Conventions, but is highly configurable. It can be invoked with an ANT task and a command line program. | Spotbugs SpotBugs is FindBugs' successor. A tool for static analysis to look for bugs in Java code. | Pmd An extensible multilanguage static code analyzer. | NullAway A tool to help eliminate NullPointerExceptions (NPEs) in your Java code with low build-time overhead |
|---|---|---|---|---|
| Quality | 100/100 Excellent | 100/100 Excellent | 100/100 Excellent | 100/100 Excellent |
| Decision verdict | 100/100 Production-ready Use this as a leading candidate, then validate the README and install path in your own agent stack. | 100/100 Production-ready Use this as a leading candidate, then validate the README and install path in your own agent stack. | 100/100 Production-ready Use this as a leading candidate, then validate the README and install path in your own agent stack. | 100/100 Production-ready Use this as a leading candidate, then validate the README and install path in your own agent stack. |
| Adoption | 8.9K stars 0 installs | 3.9K stars 0 installs | 5.4K stars 0 installs | 4.1K stars 0 installs |
| Freshness | Jun 8, 2026 | Jun 10, 2026 | Jun 5, 2026 | Jun 5, 2026 |
| Use-case fit | ||||
| Stack fit | ||||
| Platform hints | Java, Static Analysis, Claude Code | Java, Static Analysis, Claude Code | Java, Static Analysis, Claude Code | Java, Static Analysis, Claude Code |
| Warnings | No OpenAgentSkill engagement data yet | No OpenAgentSkill engagement data yet | No OpenAgentSkill engagement data yet | No OpenAgentSkill engagement data yet |
| Best for | Coding agents workflows · Claude Code teams · teams that value GitHub adoption signals | Coding agents workflows · Claude Code teams · teams that value GitHub adoption signals | Coding agents workflows · Claude Code teams · teams that value GitHub adoption signals | Coding agents workflows · Claude Code teams · teams that value GitHub adoption signals |
| Not ideal for | teams that need a vendor-supported SLA · high-compliance environments without internal security review | teams that need a vendor-supported SLA · high-compliance environments without internal security review | teams that need a vendor-supported SLA · high-compliance environments without internal security review | teams that need a vendor-supported SLA · high-compliance environments without internal security review |
| OpenAgentSkill engagement | 0 views 0 install copies | 0 views 0 install copies | 0 views 0 install copies | 0 views 0 install copies |
| Install | $ npx skills add checkstyle/checkstyle | $ npx skills add spotbugs/spotbugs | $ npx skills add pmd/pmd | $ npx skills add uber/NullAway |