Skill comparison
Use this as a shortlist, then open the skill detail page before adopting.
Decision summary
Strongest overall
CopilotKit
Use this as a leading candidate, then validate the README and install path in your own agent stack.
Fastest prototype
CopilotKit
Best first install candidate based on install readiness and adoption.
Freshest repo
Learn Harness Engineering
Most recent maintenance signal among this shortlist.
| Signal | CopilotKit The Frontend Stack for Agents & Generative UI. React, Angular, Mobile, Slack, and more. Makers of the AG-UI Protocol | Leon 🧠 Leon is your open-source personal assistant. | Learn Harness Engineering Harness engineering beginner tutorial, from 0 to 1 | Inkos Autonomous novel writing AI Agent — agents write, audit, and revise novels with human review gates |
|---|---|---|---|---|
| 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 | 35K stars Verified outcomes are shown on each skill page | 17K stars Verified outcomes are shown on each skill page | 11K stars |
| 7.6K stars Verified outcomes are shown on each skill page |
| Freshness | Jun 19, 2026 | Jun 18, 2026 | Jul 10, 2026 | Jun 25, 2026 |
| Use-case fit |
| Workflow fit |
| Platform hints | TypeScript, AI Agents, Claude Code | TypeScript, AI Agents, Claude Code | TypeScript, AI Agents, Claude Code | TypeScript, AI Agents, 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 | Browser automation workflows · Claude Code teams · teams that value GitHub adoption signals | Browser automation workflows · Claude Code teams · teams that value GitHub adoption signals | agent-frameworks 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 CopilotKit/CopilotKit | $ npx skills add leon-ai/leon | $ npx skills add walkinglabs/learn-harness-engineering | $ npx skills add Narcooo/inkos |