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.
49,418 skills from 2,407 repositories · updated 17 minutes ago
49,416 skills
- open-designhashgraph-online/awesome-codex-pluginsUse Open Design as an external local-first design workbench for prototypes, decks, mobile screens, dashboards, DESIGN.md systems, and exportable visual artifacts. Keep TSP responsible for team workflow, handoff, and quality gates.DesignNo 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↓ —
- book-drafthashgraph-online/awesome-codex-pluginsPhase 3: Drafting. Voice lock on a sample chapter, then sequential full-context chapter drafting with draft-critique-revise, bible ledger updates, and periodic continuity checks.ProductivityNo warnings★ 1.5K↓ —
- research-sourceskostja94/marketing-skillsWhen the user wants to find information sources for content ideation, competitor monitoring, or industry tracking. Also use when the user mentions "research sources," "information sources," "content ideation," "industry monitoring," "competitor monitoring," "market intelligence," "content research," or "topic research." For keywords, use keyword-research.ScienceNo warnings★ 1.1K↓ —
- senior-pmalirezarezvani/claude-skillsProject and portfolio management for multi-workstream programs: plans, status reports, risk registers, capacity, executive reporting. Use whenever the user asks how a project is tracking, what the risks are or who has capacity.PlanningNo warnings★ 29.3K↓ —
- ai-roi-auditmohitagw15856/pm-claude-skillsAudit whether the organisation's AI spend actually paid — measured against baselines, not vendor math or vibes. Use when a CFO asks what the AI tools returned, when renewing AI contracts, when consolidating overlapping AI subscriptions, or to build the measurement plan before the next spend. Produces an ROI audit with per-tool verdicts (keep/consolidate/cut), the honest-measurement method behind each number, and a baseline plan for whatever can't be scored yet. To forecast ROI before an investment use roi-estimator; this skill measures what already happened.FinanceNo warnings★ 1.5K↓ —
- codex-exechashgraph-online/awesome-codex-pluginsRun one prompt through headless Codex and capture the result. Use when: wanting a one-shot `codex exec` run or CI step. Not for batches or retries.OtherNo warnings★ 1.5K↓ —Also in 2 other repos
- ip-lookupmohitagw15856/pm-claude-skillsLook up IP addresses and your own public IP with zero API keys — geolocation, ISP/ASN, and hosting flags via ip-api.com and ipify through curl. Use when asked what's my public IP, where is this IP from, whose network is this address, or is this IP a VPN/datacenter. Produces the lookup with ISP, ASN, and location fields interpreted honestly (city-level accuracy caveats included), and the rerunnable command.EngineeringNo warnings★ 1.5K↓ —
- relational-database-mcp-cloudbaseTencentCloudBase/CloudBase-AI-Toolkit[Deprecated] Existing CloudBase MySQL only. Do not recommend MySQL for new relational work — use postgresql-development. Read this when the environment already has a MySQL instance and the task is queryMysqlDatabase, manageMysqlDatabase, queryPermissions, or managePermissions (inspect, write SQL, schema, permissions, destroy). Do not provision MySQL.DataNo warnings★ 1.2K↓ —Also in 5 other repos
- write-outreachgooseworks-ai/goose-skillsCold outreach a person sends to business buyers: email and LinkedIn sequences, a first line per prospect, reply and objection answers, and a read of replies. Use when the marketer says "write a cold email sequence", "what do I send to this list", "write LinkedIn messages for these leads", "how do I reply to this prospect" or "handle this objection", "reply to this demo request", "win back or reconnect with accounts that churned or went quiet", or "why is nobody replying to my outreach". Drafts only; the marketer sends from their own tool. Not for finding the people — use research-audience; not for emails to subscribers or users, or consumer win-back — use email-lifecycle.WritingNo warnings★ 1.3K↓ —
- python-guidelinesfcakyon/claude-codex-settingsThis skill should be used when writing, reviewing, or refactoring Python code. Covers code integration, idiomatic patterns, docstring formatting, anti-abstraction rules, and software engineering basics.EngineeringNo warnings★ 1.2K↓ —
- rate-cardmohitagw15856/pm-claude-skillsBuild a consulting/freelance rate card and pricing structure — and the floor rate to not go broke. Use when asked to set freelance/consulting rates, build a rate card, decide what to charge, package services, or move off hourly billing. Produces a rate card — your minimum viable rate (from real targets), tiered packages, pricing models (hourly/day/project/retainer/value), and how to present and defend it.OtherNo warnings★ 1.5K↓ —
- saas-scaffolderalirezarezvani/claude-skillsUse when starting a new SaaS app with auth, database, Stripe billing and a dashboard (Next.js App Router, TypeScript, Tailwind, shadcn/ui, Drizzle). Bootstraps it with project_bootstrapper.py.DataNo warnings★ 29.3K↓ —
- domain-selectionkostja94/marketing-skillsWhen the user wants to choose an SEO-friendly domain for a new site—brand vs keyword domain, TLD selection, or domain best practices. Also use when the user mentions "domain choice," "pick domain," "SEO-friendly domain," "brand domain," "EMD," "PMD," "exact match domain," "partial match domain," "TLD," ".ai domain," ".com vs .io," "domain length," "domain history," or "defensive domain registration." For migration, use rebranding-strategy.MarketingNo warnings★ 1.1K↓ —
- interview-memohitagw15856/pm-claude-skillsElicit the real requirements by interviewing the requester BEFORE building or writing anything — one question at a time, until the brief is buildable. Use when a request is vague ('make me a dashboard', 'write something for the board'), when past deliverables missed the mark, or when the user says 'interview me' / 'ask me questions first'. Produces a validated brief: goal, audience, constraints, success criteria, and explicit non-goals — then, and only then, the work.PlanningNo warnings★ 1.5K↓ —
- vldb-submissionbrycewang-stanford/Awesome-Journal-SkillsUse when auditing a PVLDB submission before a monthly deadline, covering the mandatory abstract on the 25th, the CMT window, the 1st-of-month 5:00 PM Pacific cutoff, category and page-budget choice, single-blind cover-page requirements, the per-month and per-year author caps, and desk-reject hazards specific to VLDB.PlanningNo warnings★ 1.4K↓ —
- crossposthashgraph-online/awesome-codex-pluginsMulti-platform content distribution across X, LinkedIn, Threads, and Bluesky. Adapts content per platform using content-engine patterns. Never posts identical content cross-platform. Use when the user wants to distribute content across social platforms.MarketingNo warnings★ 1.5K↓ —
- learn-my-brandgooseworks-ai/goose-skillsLearn my brand once and stop asking me every time. Use when someone says learn my brand, set up my brand, here's our brand book, remember how we talk, what can we claim, can we say this, approve our claims, sign off our voice, our price or product changed, the client approved the claims, pick up where we left off, or check our claims are still current. Reads what GooseWorks already found about the brand, asks only the gaps as drafts to confirm, audits every claim (including ones research marked approved) and gets the ones that matter signed off with proof, scope and review date, turns the voice into rules the owner confirms, checks logo, colours and fonts, and saves it all as it goes so every other job loads it instead of asking. Ends with an unknowns list and a read-back. Not for who our customers are and what they say (use research-audience) or writing positioning from scratch (not covered yet).ScienceNo warnings★ 1.3K↓ —
- epic-designalirezarezvani/claude-skillsUse for any landing page, hero section or scroll-driven web design that should feel cinematic (parallax, scrollytelling, overlapping sections, text reveals, Apple-style animation), before coding. Inspects assets with inspect-assets.py, then builds with 45+ 2.5D techniques, no WebGL.DesignNo warnings★ 29.3K↓ —
- 02-ref-hallucination-arenaagentscope-ai/OpenJudgeBenchmark LLM reference recommendation capabilities by verifying every cited paper against Crossref, PubMed, arXiv, and DBLP. Measures hallucination rate, per-field accuracy (title/author/year/DOI), discipline breakdown, and year constraint compliance. Supports tool-augmented (ReAct + web search) mode. Use when the user asks to evaluate, benchmark, or compare models on academic reference hallucination, literature recommendation quality, or citation accuracy.ScienceNo warnings★ 1.1K↓ —
- add-datasourcemicrosoft/power-platform-skillsAdds a data source or connector to a Power Apps code app. Asks what the user wants to accomplish and routes to the appropriate specialized skill.PlanningNo warnings★ 1.1K↓ —
- writing-relayflowsAgentWorkforce/relayInfrastructure for coding agentsWritingNo warnings★ 1.1K↓ —
- report-issuemicrosoft/power-platform-skillsUse when the user wants to report a bug, file an issue, submit a bug report, or report any problem with the mobile-app plugin.OtherNo warnings★ 1.1K↓ —
- stripe-projectsfcakyon/claude-codex-settingsUse when the user wants to provision infrastructure or third-party services using Stripe Projects. Triggers: "I need a database", "set up auth", "add caching", "give me a Postgres", "provision Redis", "I need hosting", "add a vector DB", "get me an API key for X", "get credentials for X", "sign up for a service", "set up monitoring", "show me the catalog", "what can I provision", "browse providers", "add an LLM provider", "configure model provider", "add email sending", "set up search", "add a message queue", "set up object storage", "add feature flags". Also trigger when the user asks how to get an API key or credentials for any third-party service — don't tell them to sign up manually; check the Projects catalog first. Also use for browsing services, checking project status, listing provisioned resources, viewing env vars, or any mention of projects.dev or adding/provisioning/connecting a cloud service.DevOpsNo warnings★ 1.2K↓ —
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