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.

Add more skills

Decision summary

Elasticsearch is the strongest overall pick here because it has a 100/100 readiness score and fits RAG and knowledge.

Strongest overall

Elasticsearch

Use this as a leading candidate, then validate the README and install path in your own agent stack.

Fastest prototype

Elasticsearch

Best first install candidate based on install readiness and adoption.

Freshest repo

Vespa

Most recent maintenance signal among this shortlist.

Signal	Java RAG This RAG (Retrieval-Augmented Generation) project is implemented using pure Java. This approach makes it easier to adapt to enterprise-level environments and is more conducive to secondary development.	Elasticsearch Free and Open Source, Distributed, RESTful Search Engine	OpenSearch 🔎 Open source distributed and RESTful search engine.	Vespa The AI search platform
Quality	48/100 Needs review	100/100 Excellent	100/100 Excellent	100/100 Excellent
Decision verdict	38/100 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.	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	160 stars 0 installs	77K stars 0 installs	13K stars 0 installs	7.0K stars 0 installs
Freshness	Feb 26, 2025	Jun 16, 2026	Jun 16, 2026	Jun 20, 2026
Use-case fit	RAG and knowledge GitHub automation Coding agents	RAG and knowledge Coding agents Research agents	RAG and knowledge Coding agents Research agents	RAG and knowledge Coding agents Browser automation
Stack fit	RAG knowledge base Content growth agent	RAG knowledge base Content growth agent	RAG knowledge base Content growth agent	RAG knowledge base Content growth agent
Platform hints	Java, RAG, Claude Code	Java, Search, Claude Code	Java, Search, Claude Code	Java, Vector Search, Claude Code
Warnings	Repository looks stale · No OpenAgentSkill engagement data yet	No OpenAgentSkill engagement data yet	No OpenAgentSkill engagement data yet	No major risk signals from current metadata
Best for	RAG and knowledge workflows · Claude Code teams · builders willing to evaluate younger projects	RAG and knowledge workflows · Claude Code teams · teams that value GitHub adoption signals	RAG and knowledge workflows · Claude Code teams · teams that value GitHub adoption signals	RAG and knowledge 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	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	3 views 0 install copies
Install	`$ npx skills add ChinaYiqun/java-rag`	`$ npx skills add elastic/elasticsearch`	`$ npx skills add opensearch-project/OpenSearch`	`$ npx skills add vespa-engine/vespa`