Skill comparison
Use this as a shortlist, then open the skill detail page before adopting.
Decision summary
Strongest overall
Inbox Zero
Use this as a leading candidate, then validate the README and install path in your own agent stack.
Fastest prototype
Inbox Zero
Best first install candidate based on install readiness and adoption.
Freshest repo
Inbox Zero
Most recent maintenance signal among this shortlist.
| Signal | Heimdall Self-hosted personal email guardian with one-step deployment | Inbox Zero The world's best AI personal assistant for email. Open source app to help you reach inbox zero fast. |
|---|---|---|
| Quality | 54/100 Needs review | 100/100 Excellent |
| Decision verdict | 56/100 Needs manual review Do a manual repository review before adding this to an agent workflow. | 100/100 Production-ready Use this as a leading candidate, then validate the README and install path in your own agent stack. |
| Adoption | 537 stars Verified outcomes are shown on each skill page | 11K stars Verified outcomes are shown on each skill page |
| Freshness | Jan 8, 2023 | Jun 15, 2026 |
| Use-case fit |
| Workflow fit |
| Platform hints | TypeScript, Email, Claude Code | TypeScript, Productivity, Claude Code, OpenAI Agents |
| Warnings | Repository looks stale · 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 |
| Not ideal for | teams that require actively maintained dependencies · production agents without a repository 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 |
| Install | $ npx skills add fterh/heimdall | $ npx skills add elie222/inbox-zero |