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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

Mailinabox is the strongest overall pick here because it has a 100/100 readiness score and fits Workflow automation.

Strongest overall

Mailinabox

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

Fastest prototype

Mailinabox

Best first install candidate based on install readiness and adoption.

Freshest repo

Mailinabox

Most recent maintenance signal among this shortlist.

SignalMailcat

Find existing email addresses by nickname using API/SMTP checking methods without user notification. Please, don't hesitate to improve cat's job! 🐱🔎 📬

Socialscan

Python library for accurately querying username and email usage on online platforms

Holehe

holehe allows you to check if the mail is used on different sites like twitter, instagram and will retrieve information on sites with the forgotten password function.

Mailinabox

Mail-in-a-Box helps individuals take back control of their email by defining a one-click, easy-to-deploy SMTP+everything else server: a mail server in a box.

Quality
87/100
Excellent
98/100
Excellent
83/100
Strong
100/100
Excellent
Decision verdict
98/100
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.

85/100
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.

Adoption890 stars
0 installs
1.8K stars
0 installs
11K stars
0 installs
15K stars
0 installs
FreshnessMay 24, 2026Apr 27, 2026Sep 10, 2024May 24, 2026
Use-case fit
Workflow automationCoding agentsRAG and knowledge
Workflow automationGitHub automationCoding agents
Workflow automationCoding agentsRAG and knowledge
Workflow automationCoding agentsRAG and knowledge
Stack fit
Content growth agentCoding review agent
Content growth agentCoding review agent
Content growth agentCoding review agent
Content growth agentCoding review agent
Platform hintsPython, Email, Claude CodePython, Email, Claude CodePython, Email, Claude CodePython, Email, Claude Code
WarningsNo OpenAgentSkill engagement data yetNo OpenAgentSkill engagement data yetRepository looks stale · No OpenAgentSkill engagement data yetNo OpenAgentSkill engagement data yet
Best forWorkflow automation workflows · Claude Code teams · teams that value GitHub adoption signalsWorkflow automation workflows · Claude Code teams · teams that value GitHub adoption signalsWorkflow automation workflows · Claude Code teams · teams that value GitHub adoption signalsWorkflow automation workflows · Claude Code teams · teams that value GitHub adoption signals
Not ideal forteams that need a vendor-supported SLA · high-compliance environments without internal security reviewteams that need a vendor-supported SLA · high-compliance environments without internal security reviewteams that require actively maintained dependencies · production agents without a repository reviewteams that need a vendor-supported SLA · high-compliance environments without internal security review
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Install
$ npx skills add sharsil/mailcat
$ npx skills add iojw/socialscan
$ npx skills add megadose/holehe
$ npx skills add mail-in-a-box/mailinabox