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

Stirling PDF is the strongest overall pick here because it has a 100/100 readiness score and fits Document processing.

Strongest overall

Stirling PDF

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

Fastest prototype

Stirling PDF

Best first install candidate based on install readiness and adoption.

Freshest repo

Stirling PDF

Most recent maintenance signal among this shortlist.

Signal	Siyuan A privacy-first, self-hosted, fully open source personal knowledge management software, written in typescript and golang.	Zettlr Your One-Stop Publication Workbench	Stirling PDF #1 PDF Application on GitHub that lets you edit PDFs on any device anywhere	Readest Readest is a modern, feature-rich ebook reader designed for avid readers offering seamless cross-platform access, powerful tools, and an intuitive interface to elevate your reading experience.
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	44K stars 0 installs	13K stars 0 installs	81K stars 0 installs	21K stars 0 installs
Freshness	Jun 7, 2026	Jun 5, 2026	Jun 10, 2026	Jun 4, 2026
Use-case fit	RAG and knowledge Document processing Coding agents	Document processing RAG and knowledge Web scraping	Document processing RAG and knowledge Coding agents	Document processing RAG and knowledge Browser automation
Stack fit	RAG knowledge base Coding review agent	RAG knowledge base Web data pipeline	RAG knowledge base Coding review agent	RAG knowledge base Browser QA agent
Platform hints	TypeScript, PDF, Claude Code	TypeScript, PDF, Claude Code	TypeScript, PDF, Claude Code	TypeScript, PDF, 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	RAG and knowledge workflows · Claude Code teams · teams that value GitHub adoption signals	Document processing workflows · Claude Code teams · teams that value GitHub adoption signals	Document processing workflows · Claude Code teams · teams that value GitHub adoption signals	Document processing 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 siyuan-note/siyuan`	`$ npx skills add Zettlr/Zettlr`	`$ npx skills add Stirling-Tools/Stirling-PDF`	`$ npx skills add readest/readest`