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.
49,492 skills from 2,391 repositories · updated 5 hours ago
48,451 skills
- cmo-advisoralirezarezvani/claude-skillsMarketing leadership: positioning, product-led vs sales-led vs community-led growth, budget split across channels, marketing team design. Use whenever the user asks how to grow, which go-to-market fits or where to spend.DesignNo warnings★ 29.3K↓ —
- swift-swiftuidaveebbelaar/bamaSwift 6 and SwiftUI code rules for macOS apps, including concurrency, state, SwiftData, AppKit bridges, and fixes for common compiler errors. Use when writing, reviewing, or debugging Swift code in a Mac app, or on concurrency, Sendable, or "not in scope" errors.WritingNo warnings★ 1.5K↓ —
- database-designeralirezarezvani/claude-skillsDesign a database schema: tables, relationships, indexes, normalization, SQL vs NoSQL, migration plans. Use whenever the user asks how to structure their data, which database to pick, or before writing DDL.DataNo warnings★ 29.3K↓ —
- senior-secopsalirezarezvani/claude-skillsFind and fix application security problems: security reviews, CVE remediation, hardening, secrets and auth, SOC 2, PCI-DSS, HIPAA and GDPR checks. Use whenever the user asks if their app is secure, needs to patch a vulnerable dependency or prepares for an audit.SecurityNo warnings★ 29.3K↓ —
- browser-automationalirezarezvani/claude-skillsAutomate a browser: scrape websites, fill forms, pull structured data from web pages. Use whenever the user wants to grab data from a site, fill a web form or extract a table. Browser testing: playwright-pro.BrowserNo warnings★ 29.3K↓ —
- changelog-generatoralirezarezvani/claude-skillsWrite release notes and CHANGELOG.md from commits and pick the next semver version. Use whenever the user is cutting a release, asks what changed since the last one or what version comes next, or wants commits linted first.WritingNo warnings★ 29.3K↓ —
- jira-expertalirezarezvani/claude-skillsJira setup and queries: JQL, workflows, custom fields, automation, dashboards. Use whenever the user needs a Jira search, filter, dashboard or rule set up, or a workflow fixed.ProductivityNo warnings★ 29.3K↓ —
- senior-frontendalirezarezvani/claude-skillsBuild and review React, Next.js, TypeScript or Tailwind frontends: components, scaffolding, performance and bundle size. Use whenever the user wants a new component or app, a page feels slow, the bundle is too big, or asks for a frontend code review.DesignNo warnings★ 29.3K↓ —
- performancedaveebbelaar/bamaMake a macOS app fast by measuring hangs, stutter, CPU, memory, and energy, then moving work off the main thread and onto the GPU. Use when the app freezes, a shortcut feels slow, dragging stutters, the fan spins, memory grows, or the user asks to optimize or profile.ProductivityNo warnings★ 1.5K↓ —
- migration-architectalirezarezvani/claude-skillsPlan a safe database, schema, service or data migration: phased plan, compatibility check and rollback scripts. Use whenever the user must move data, change a live schema, switch databases or migrate without downtime.PlanningNo warnings★ 29.3K↓ —
- product-strategistalirezarezvani/claude-skillsHead of Product: quarterly OKRs cascaded from company to team, product vision, roadmap, team structure. Use whenever the user asks to set OKRs, a vision or roadmap, or align teams on strategy.PlanningNo warnings★ 29.3K↓ —
- senior-architectalirezarezvani/claude-skillsMake system architecture decisions and draw architecture diagrams: monolith vs microservices, database choice, scalability, ADRs, design reviews, Mermaid or PlantUML. Use whenever the user asks how to structure a system, which database to pick, whether it will scale, or wants an ADR or diagram.PlanningNo warnings★ 29.3K↓ —
- experiment-designeralirezarezvani/claude-skillsPlan A/B tests and product experiments: hypotheses, sample size, priority, reading results. Use whenever the user asks if a test won, how long to run it or what to test.TestingNo warnings★ 29.3K↓ —
- senior-securityalirezarezvani/claude-skillsCheck if a design or code is secure: STRIDE threat model, DREAD risk scores, leaked secret scan. Use whenever the user asks what could be attacked, how risky a feature is, or to find exposed keys.SecurityNo warnings★ 29.3K↓ —
- yc-readerhimself65/finance-skillsLook up Y Combinator companies and batches from the public yc-oss API, a static JSON dataset refreshed daily: company profiles, batch rosters (e.g. W25, S24), companies by industry or tag, top companies, who is hiring, founder-diversity lists, and overall YC stats. Use this skill whenever the user asks about YC-backed startups, a YC batch, YC companies in a sector or tag or that are hiring, the Y Combinator portfolio, or startup and venture research that draws on YC data. Read-only.ScienceNo warnings★ 3.5K↓ —
- oma-pdffirst-fluke/oh-my-agentExtract PDF text, headings, tables, and images into Markdown using opendataloader-pdf. Use for PDF parsing, not PDF layout creation.DocumentsNo warnings★ 1.4K↓ —
- webperfnucliweb/webperf-snippetsWeb performance measurement and debugging toolkit. Use when the user asks about web performance, wants to audit a page, or says "analyze performance", "debug lcp", "check ttfb", "measure core web vitals", "audit images", or similar.EngineeringNo warnings★ 1.5K↓ —Also in 1 other repo
- cloudflare-onefcakyon/claude-codex-settingsDesign, configure, troubleshoot, or review Cloudflare One Zero Trust and SASE deployments. Use cloudflare-one-migrations for migration planning from other vendors.DevOpsNo warnings★ 1.2K↓ —
- asc-analytics-reportsrorkai/app-store-connect-cli-skillsCollect, download, and verify App Store Connect Analytics reports with asc. Use when users need to discover analytics report requests, select report instances by processing date or granularity, download every segment, or verify downloaded files against Apple's size and MD5 metadata before analysis.DataNo warnings★ 1.1K↓ —
- asc-whats-new-writerrorkai/app-store-connect-cli-skillsGenerate engaging, localized App Store release notes (What's New) from git log, bullet points, or free text using canonical metadata under `./metadata`. Optionally pairs with promotional text updates.WritingNo warnings★ 1.1K↓ —
- django-q2hashgraph-online/awesome-codex-pluginsUse when adding, changing, testing, or debugging Django Q2 background tasks, scheduled jobs, qcluster workers, Redis broker configuration, or ORM broker fallback in Django projects.TestingNo warnings★ 1.5K↓ —
- asc-app-create-uirorkai/app-store-connect-cli-skillsCreate a new App Store Connect app record via browser automation. Use when there is no public API for app creation and you need an agent to drive the New App form.DesignNo warnings★ 1.1K↓ —
- asc-id-resolverrorkai/app-store-connect-cli-skillsResolve App Store Connect IDs (apps, builds, app and digital-goods versions, groups, testers) from human-friendly names using asc. Use when commands require IDs.OtherNo warnings★ 1.1K↓ —
- asc-aso-auditrorkai/app-store-connect-cli-skillsRun an offline ASO audit on canonical App Store metadata under `./metadata` and surface keyword gaps using Astro MCP. Use after pulling metadata with `asc metadata pull`.OtherNo warnings★ 1.1K↓ —
working-effectively-with-legacy-code
ciembor/agent-rules-books
EngineeringUpdated Sep 10, 2026
From the author
Apply Michael Feathers-inspired legacy-code rules when changing hard-to-test code safely with characterization tests, seams, sprout methods, or wrap methods.
Install
npx skills add ciembor/agent-rules-books --skill working-effectively-with-legacy-code -a claude-code
Installs to .claude/skills/working-effectively-with-legacy-code/ · 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
No warnings.
Why 88
Security100
Provenance82
Maintenance85
Licence100
Adoption56
Files (4)
- SKILL.md
- working-effectively-with-legacy-code.md
- working-effectively-with-legacy-code.mini.md
- working-effectively-with-legacy-code.nano.md