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.

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Decision summary

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

Strongest overall

Union

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

Fastest prototype

Union

Best first install candidate based on install readiness and adoption.

Freshest repo

Hardhat

Most recent maintenance signal among this shortlist.

Signal	Vandal Static program analysis framework for Ethereum smart contract bytecode.	Union The trust-minimized, zero-knowledge bridging protocol, designed for censorship resistance, extremely high security, and usage in decentralized finance.	Ethereumbook Mastering Ethereum: 2nd Edition, by Andreas M. Antonopoulos, Gavin Wood, Carlo Parisi, Alessandro Mazza, Niccolò Pozzolini	Hardhat Hardhat is a development environment to compile, deploy, test, and debug your Ethereum software.
Quality	73/100 Strong	100/100 Excellent	100/100 Excellent	100/100 Excellent
Decision verdict	72/100 Strong shortlist Shortlist this skill and compare it with close alternatives before production adoption.	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	168 stars 0 installs	74K stars 0 installs	22K stars 0 installs	8.5K stars 0 installs
Freshness	Apr 13, 2026	Jun 22, 2026	May 13, 2026	Jun 29, 2026
Use-case fit	Coding agents RAG and knowledge Workflow automation	RAG and knowledge Coding agents Workflow automation	Coding agents RAG and knowledge Workflow automation	Coding agents Workflow automation RAG and knowledge
Stack fit	Coding review agent Content growth agent	RAG knowledge base Content growth agent	Content growth agent Coding review agent	Coding review agent Content growth agent
Platform hints	Python, Blockchain, Claude Code	Rust, Blockchain, Claude Code	Blockchain, Claude Code	TypeScript, Blockchain, 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 · builders willing to evaluate younger projects	RAG and knowledge 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 usyd-blockchain/vandal`	`$ npx skills add unionlabs/union`	`$ npx skills add ethereumbook/ethereumbook`	`$ npx skills add NomicFoundation/hardhat`