Skill comparison
Compare agent skills before installing.
Comparing 4 skills
Use this as a shortlist, then open the skill detail page before adopting.
Decision summary
Thunderbird Android is the strongest overall pick here because it has a 100/100 readiness score and fits Workflow automation.
Strongest overall
Thunderbird Android
Use this as a leading candidate, then validate the README and install path in your own agent stack.
Fastest prototype
Thunderbird Android
Best first install candidate based on install readiness and adoption.
Freshest repo
Thunderbird Android
Most recent maintenance signal among this shortlist.
| Signal | OneSignal Android SDK OneSignal makes engaging customers simple and is the fastest, most reliable service to send push notifications, in-app messages, SMS, and emails. This plugin makes it easy to integrate your native Android or Amazon app with OneSignal. https://onesignal.com | Thunderbird Android Thunderbird for Android – Open Source Email App for Android (fka K-9 Mail) | Kalendar Kalendar is no ordinary library — it’s the Elder Wand of calendar components, crafted for Compose (now with KMP support) sorcerers who demand both power and elegance. With the flick of your wrist (or a few lines of Kotlin), you conjure a magical, interactive calendar that bends to your will. With Kalendar, your app becomes as organized as Hermione | FairEmail Fully featured, open source, privacy friendly email app for Android |
|---|---|---|---|---|
| Quality | 80/100 Strong | 100/100 Excellent | 81/100 Strong | 100/100 Excellent |
| Decision verdict | 91/100 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. | 92/100 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 | 626 stars 0 installs | 14K stars 0 installs | 919 stars 0 installs | 4.4K stars 0 installs |
| Freshness | Jun 11, 2026 | Jun 16, 2026 | Apr 13, 2026 | Jun 15, 2026 |
| Use-case fit | ||||
| Stack fit | ||||
| Platform hints | Kotlin, Email, Claude Code | Kotlin, Email, Claude Code | Kotlin, Calendar, Claude Code | Java, Email, 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 | Workflow automation workflows · Claude Code teams · teams that value GitHub adoption signals | Workflow automation workflows · Claude Code teams · teams that value GitHub adoption signals | Workflow automation workflows · Claude Code teams · teams that value GitHub adoption signals | Workflow automation 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 OneSignal/OneSignal-Android-SDK | $ npx skills add thunderbird/thunderbird-android | $ npx skills add hi-manshu/kalendar | $ npx skills add M66B/FairEmail |