Agent skills you can check before you install
Public SKILL.md skills from GitHub repositories with 50+ stars and from the vendors themselves, scanned and scored. Install any of them with one command in Claude Code, Cursor, Codex, GitHub Copilot or Gemini CLI.
49,409 skills from 2,375 repositories · updated 4 hours ago
48,362 skills
- code-review-assistantalibaba/skill-upTriggered when the user submits code or requests a code review. Automatically analyzes code quality, identifies potential bugs, security vulnerabilities, and performance issues, and provides improvement suggestions. Trigger phrases include "take a look at this code", "review this", "is there a problem with this function".EngineeringNo warnings★ 1.4K↓ —
- gtm-strategykostja94/marketing-skillsWhen the user wants to plan go-to-market strategy, GTM framework, or market entry. Also use when the user mentions "GTM," "go-to-market," "market entry," "new market," "repositioning," "PLG," "sales-led," "product-led," "marketing-led," "ICP," "buyer persona," "GTM motion," or "market expansion." For launch checklist, use product-launch.MarketingNo warnings★ 1.1K↓ —
- seohashgraph-online/awesome-codex-pluginsComprehensive SEO analysis for any website or business type. Full site audits, single-page analysis, technical SEO (crawlability, indexability, Core Web Vitals with INP), schema markup, content quality (E-E-A-T), image optimization, sitemap analysis, and GEO for AI Overviews/ChatGPT/Perplexity. Industry detection for SaaS, e-commerce, local, publishers, agencies. Triggers on: SEO, audit, schema, Core Web Vitals, sitemap, E-E-A-T, AI Overviews, GEO, technical SEO, content quality, page speed.MarketingNo warnings★ 1.5K↓ —
- threat-detectionalirezarezvani/claude-skillsUse when hunting threats, sweeping IOCs or looking for anomalies in logs and telemetry. Ranks ATT&CK-mapped signals and z-score anomalies with threat_signal_analyzer.py.OtherNo warnings★ 29.2K↓ —
- functionshashgraph-online/awesome-codex-pluginsBuild and prove durable studio functions for record, order, schedule and tool events, with concurrent database updates and event feeds.DataNo warnings★ 1.5K↓ —
- rework-loophashgraph-online/awesome-codex-pluginsStructured rework with git blame attribution for failed goal iterations. Maps failures to responsible changes and routes targeted fix briefs.EngineeringNo warnings★ 1.5K↓ —
- dns-lookupmohitagw15856/pm-claude-skillsQuery DNS records and domain registration data with zero API keys — DNS-over-HTTPS via dns.google and domain registration via RDAP, through plain curl. Use when asked what does this domain resolve to, check the MX or TXT records, who registered this domain, when does it expire, or has DNS propagated. Produces the records decoded (SPF/DKIM/DMARC read, not just dumped), the registration facts from RDAP, and the rerunnable commands.EngineeringNo warnings★ 1.5K↓ —
- brand-voicehashgraph-online/awesome-codex-pluginsBuild a source-derived writing style profile from real posts, essays, launch notes, docs, or site copy, then reuse that profile across content, outreach, and social workflows. Use when the user wants voice consistency without generic AI writing tropes.WritingNo warnings★ 1.5K↓ —
- iclr-experimentsbrycewang-stanford/Awesome-Journal-SkillsUse when designing or auditing ICLR experiments, including baselines, ablations, scaling laws, robustness, statistics, benchmarks, human evaluation, and compute reporting. Use when a reviewer questions whether a representation-learning or model gain is real, when you must isolate one mechanism with an ablation, or when preparing a small compute-matched control that can be posted inline during the public discussion period.OtherNo warnings★ 1.4K↓ —
- architectNewhashgraph-online/awesome-codex-pluginsSettle structure before writing logic. Ground in the current code, get competing design sketches (types, signatures, modules, trust boundaries) through arena, implement against the merged sketch, scrap it on a friction pattern. Use for "architect this", "design X first".PlanningNo warnings★ 1.5K↓ —
- cav-supplementarybrycewang-stanford/Awesome-Journal-SkillsUse when deciding what belongs in a CAV (Computer Aided Verification) paper body versus its optional appendix and artifact, covering the LNCS page limits, the rule that reviewers are not obliged to read the appendix so decision-critical content stays in the body, where full proofs and benchmark tables live, and double-anonymous supplementary material for the anonymized categories.ScienceNo warnings★ 1.4K↓ —
- five-whyshashgraph-online/awesome-codex-pluginsRoot cause analysis using the Five Whys technique. Use when a bug persists despite surface fixes, a failure recurs, or a process keeps breaking. Ensures the fix targets the root, not the symptom.OtherNo warnings★ 1.5K↓ —
- runtypehashgraph-online/awesome-codex-pluginsScope a Runtype project or set up platform access; route implementation to the relevant Runtype skill.OtherNo warnings★ 1.5K↓ —
- e2e-testinghashgraph-online/awesome-codex-pluginsPlaywright E2E testing patterns, Page Object Model, configuration, CI/CD integration, artifact management, and flaky test strategies.TestingNo warnings★ 1.5K↓ —Also in 1 other repo
- daily-journalhuytieu/COG-second-brainA passive daily work journal that Claude keeps FOR you so you never have to write it yourself. Append short entries after meaningful work (what was done, what you focused on, artifacts touched) to 01-daily/journal/YYYY-MM-DD.md. Run a guided reflection at night or in the morning. Use when you run /daily-journal, say "log this to my journal", "add to today's journal", "reflect on today/yesterday", or when finishing a meaningful chunk of work in any session.WritingNo warnings★ 1.3K↓ —Also in 1 other repo
- ndss-experimentsbrycewang-stanford/Awesome-Journal-SkillsUse when designing or auditing the evaluation of an NDSS paper — attack demonstrations, defense evaluations under adaptive adversaries, and Internet measurements — choosing between testbed, emulation, and live experiments and meeting NDSS's deployment-realism evidence bar.DevOpsNo warnings★ 1.4K↓ —
- agent-specmohitagw15856/pm-claude-skillsSpecify an autonomous or tool-using AI agent before building it. Use when asked to design an AI agent, define an agent's tools and guardrails, scope what an agent is allowed to do, or write an agent spec/PRD. Produces an agent spec — goal & scope, tools with permissions, the control loop, guardrails & approval gates, memory, escalation/handoff, evaluation, and failure handling.PlanningNo warnings★ 1.5K↓ —
- context-modemohitagw15856/pm-claude-skillsKeep Claude Code sessions productive across resets with output filtering, session logging, and auto-resume. Use when starting a long or complex coding session, when previous sessions lost context mid-task, or when you need Claude to resume exactly where it left off after a reset. Produces a session.log at the project root, filtered command output that preserves context, and automatic resume of in-progress tasks after any reset.ProductivityNo warnings★ 1.5K↓ —
- pm-skillsUpdatedalirezarezvani/claude-skillsRouter for project-management skills: sprints, portfolio health, Jira, Confluence, stakeholder comms, plus a delivery loop. Use whenever a delivery request is unclear about which PM skill fits, or the user asks to run a delivery loop or pull Jira data into one.OtherNo warnings★ 29.2K↓ —
- stock-snapshotmohitagw15856/pm-claude-skillsFetch a stock quote snapshot with keyless curl — Yahoo Finance's public chart endpoint, read with the discipline unofficial market data demands: timestamped, delayed-flagged, and never advice. Use when asked what's this stock at, how did the market do today, get me a ticker's recent range, or pull basic price history. Produces the quote with change and range context, the source-honesty caveats (unofficial, possibly delayed), the rerunnable command, and a hard no-advice line.FinanceNo warnings★ 1.5K↓ —
- write-outreach-outreach-qagooseworks-ai/goose-skillsStep of the write-outreach playbook: the checks a finished outreach pack and send file must pass before delivery, covering facts, proof, compliance, length, asks and tone. Run write-outreach instead; not for direct use.TestingNo warnings★ 1.3K↓ —
- advisehashgraph-online/awesome-codex-pluginsGet a senior-style review of code, a planned change, a library choice, or a fix idea -- without writing a spec document. Multi-turn chat, grounded in your actual code. Use when you want a quick second opinion, not a plan.WritingNo warnings★ 1.5K↓ —
- person-researchhashgraph-online/awesome-codex-pluginsResearches a person across podcasts and YouTube for interview or meeting prep: where they appeared, their own words, who discusses them. Uses arcmira.ScienceNo warnings★ 1.5K↓ —
- oma-academic-writingfirst-fluke/oh-my-agentDraft and revise academic prose against a rubric, evidence, and citation requirements. Use for essays, reports, literature reviews, or academic style audits.WritingNo warnings★ 1.4K↓ —Also in 1 other repo
loop-engineering
huytieu/COG-second-brain
EngineeringUpdated Oct 23, 2026
From the author
Shared loop-engineering reference for COG skills - the agent loop, deterministic verifiers, termination conditions, in-loop context management, and named patterns. Invoke when designing or debugging a skill that iterates (search-verify-retry, scan-until-dry, fetch-retry-gate).
Install
npx skills add huytieu/COG-second-brain --skill loop-engineering -a claude-code
Installs to .claude/skills/loop-engineering/ · Each command fetches the skill straight from GitHub with the open skills CLI.
Download .zip
Byte-identical to the scanned commit, with the repository’s licence and a SOURCE.txt.
What it can touch
Instructions onlyNo network use seenLicence: MIT
Safety checks on SKILL.md
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Files (1)
- SKILL.md