Updated 3mo ago
by x-cmd
skill
Human-vetted, community-curated skills for AI coding & agent tools.
26 GitHub stars (26)
Steady at 26 stars — no new stars in the 16 days since Sep 30.
- 30 skills (30 skills found in its SKILL.md files)
- 5 forks (5 forks)
- 3mo ago last update (Last updated 3mo ago)
Install
Skills CLI
npx skills add x-cmd/skill
Asks which skills and agents to install. Just one: npx skills add x-cmd/skill --skill api-design — add -g for every project.
Claude Code
git clone https://github.com/x-cmd/skillcp -r "skill/data/affaanmustafa/api-design" ~/.claude/skills/
Copies the api-design skill into ~/.claude/skills/ for every project (use .claude/skills/ for one project). Repeat for the other skills listed below.
Plugin
/plugin marketplace add x-cmd/skill
Run inside Claude Code if the repository ships a plugin marketplace, then pick plugins from /plugin.
Skills can run code on your machine — read the SKILL.md first.
What it does
In the author's own words, from each skill's SKILL.md — showing the first 30 of 267 files.
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api-design
REST API design patterns including resource naming, status codes, pagination, filtering, error responses, versioning, and rate limiting for production APIs.
data/affaanmustafa/api-design/SKILL.md on GitHub (opens in a new tab) -
article-writing
Write articles, guides, blog posts, tutorials, newsletter issues, and other long-form content in a distinctive voice derived from supplied examples or brand guidance. Use when the user wants polished written content longer than a paragraph, especially when voice consistency, structure, and credibility matter.
data/affaanmustafa/article-writing/SKILL.md on GitHub (opens in a new tab) -
autonomous-loops
Patterns and architectures for autonomous Claude Code loops — from simple sequential pipelines to RFC-driven multi-agent DAG systems.
data/affaanmustafa/autonomous-loops/SKILL.md on GitHub (opens in a new tab) -
backend-patterns
Backend architecture patterns, API design, database optimization, and server-side best practices for Node.js, Express, and Next.js API routes.
data/affaanmustafa/backend-patterns/SKILL.md on GitHub (opens in a new tab) -
clickhouse-io
ClickHouse database patterns, query optimization, analytics, and data engineering best practices for high-performance analytical workloads.
data/affaanmustafa/clickhouse-io/SKILL.md on GitHub (opens in a new tab) -
coding-standards
Universal coding standards, best practices, and patterns for TypeScript, JavaScript, React, and Node.js development.
data/affaanmustafa/coding-standards/SKILL.md on GitHub (opens in a new tab) -
configure-ecc
Interactive installer for Everything Claude Code — guides users through selecting and installing skills and rules to user-level or project-level directories, verifies paths, and optionally optimizes installed files.
data/affaanmustafa/configure-ecc/SKILL.md on GitHub (opens in a new tab) -
content-engine
Create platform-native content systems for X, LinkedIn, TikTok, YouTube, newsletters, and repurposed multi-platform campaigns. Use when the user wants social posts, threads, scripts, content calendars, or one source asset adapted cleanly across platforms.
data/affaanmustafa/content-engine/SKILL.md on GitHub (opens in a new tab) -
content-hash-cache-pattern
Cache expensive file processing results using SHA-256 content hashes — path-independent, auto-invalidating, with service layer separation.
data/affaanmustafa/content-hash-cache-pattern/SKILL.md on GitHub (opens in a new tab) -
continuous-learning-v2
Instinct-based learning system that observes sessions via hooks, creates atomic instincts with confidence scoring, and evolves them into skills/commands/agents. v2.1 adds project-scoped instincts to prevent cross-project contamination.
data/affaanmustafa/continuous-learning-v2/SKILL.md on GitHub (opens in a new tab) -
continuous-learning
Automatically extract reusable patterns from Claude Code sessions and save them as learned skills for future use.
data/affaanmustafa/continuous-learning/SKILL.md on GitHub (opens in a new tab) -
cost-aware-llm-pipeline
Cost optimization patterns for LLM API usage — model routing by task complexity, budget tracking, retry logic, and prompt caching.
data/affaanmustafa/cost-aware-llm-pipeline/SKILL.md on GitHub (opens in a new tab) -
cpp-coding-standards
C++ coding standards based on the C++ Core Guidelines (isocpp.github.io). Use when writing, reviewing, or refactoring C++ code to enforce modern, safe, and idiomatic practices.
data/affaanmustafa/cpp-coding-standards/SKILL.md on GitHub (opens in a new tab) -
cpp-testing
Use only when writing/updating/fixing C++ tests, configuring GoogleTest/CTest, diagnosing failing or flaky tests, or adding coverage/sanitizers.
data/affaanmustafa/cpp-testing/SKILL.md on GitHub (opens in a new tab) -
database-migrations
Database migration best practices for schema changes, data migrations, rollbacks, and zero-downtime deployments across PostgreSQL, MySQL, and common ORMs (Prisma, Drizzle, Django, TypeORM, golang-migrate).
data/affaanmustafa/database-migrations/SKILL.md on GitHub (opens in a new tab) -
deployment-patterns
Deployment workflows, CI/CD pipeline patterns, Docker containerization, health checks, rollback strategies, and production readiness checklists for web applications.
data/affaanmustafa/deployment-patterns/SKILL.md on GitHub (opens in a new tab) -
django-patterns
Django architecture patterns, REST API design with DRF, ORM best practices, caching, signals, middleware, and production-grade Django apps.
data/affaanmustafa/django-patterns/SKILL.md on GitHub (opens in a new tab) -
django-security
Django security best practices, authentication, authorization, CSRF protection, SQL injection prevention, XSS prevention, and secure deployment configurations.
data/affaanmustafa/django-security/SKILL.md on GitHub (opens in a new tab) -
django-tdd
Django testing strategies with pytest-django, TDD methodology, factory_boy, mocking, coverage, and testing Django REST Framework APIs.
data/affaanmustafa/django-tdd/SKILL.md on GitHub (opens in a new tab) -
django-verification
Verification loop for Django projects - migrations, linting, tests with coverage, security scans, and deployment readiness checks before release or PR.
data/affaanmustafa/django-verification/SKILL.md on GitHub (opens in a new tab) -
docker-patterns
Docker and Docker Compose patterns for local development, container security, networking, volume strategies, and multi-service orchestration.
data/affaanmustafa/docker-patterns/SKILL.md on GitHub (opens in a new tab) -
e2e-testing
Playwright E2E testing patterns, Page Object Model, configuration, CI/CD integration, artifact management, and flaky test strategies.
data/affaanmustafa/e2e-testing/SKILL.md on GitHub (opens in a new tab) -
eval-harness
Formal evaluation framework for Claude Code sessions implementing eval-driven development (EDD) principles
data/affaanmustafa/eval-harness/SKILL.md on GitHub (opens in a new tab) -
foundation-models-on-device
Apple FoundationModels framework for on-device LLM — text generation, guided generation with @Generable, tool calling, and snapshot streaming in iOS 26+.
data/affaanmustafa/foundation-models-on-device/SKILL.md on GitHub (opens in a new tab) -
frontend-patterns
Frontend development patterns for React, Next.js, state management, performance optimization, and UI best practices.
data/affaanmustafa/frontend-patterns/SKILL.md on GitHub (opens in a new tab) -
frontend-slides
Create stunning, animation-rich HTML presentations from scratch or by converting PowerPoint files. Use when the user wants to build a presentation, convert a PPT/PPTX to web, or create slides for a talk/pitch. Helps non-designers discover their aesthetic through visual exploration rather than abstract choices.
data/affaanmustafa/frontend-slides/SKILL.md on GitHub (opens in a new tab) -
golang-patterns
Idiomatic Go patterns, best practices, and conventions for building robust, efficient, and maintainable Go applications.
data/affaanmustafa/golang-patterns/SKILL.md on GitHub (opens in a new tab) -
golang-testing
Go testing patterns including table-driven tests, subtests, benchmarks, fuzzing, and test coverage. Follows TDD methodology with idiomatic Go practices.
data/affaanmustafa/golang-testing/SKILL.md on GitHub (opens in a new tab) -
investor-materials
Create and update pitch decks, one-pagers, investor memos, accelerator applications, financial models, and fundraising materials. Use when the user needs investor-facing documents, projections, use-of-funds tables, milestone plans, or materials that must stay internally consistent across multiple fundraising assets.
data/affaanmustafa/investor-materials/SKILL.md on GitHub (opens in a new tab) -
investor-outreach
Draft cold emails, warm intro blurbs, follow-ups, update emails, and investor communications for fundraising. Use when the user wants outreach to angels, VCs, strategic investors, or accelerators and needs concise, personalized, investor-facing messaging.
data/affaanmustafa/investor-outreach/SKILL.md on GitHub (opens in a new tab)
No skill matches that filter.
Review before you install
A skill is a set of instructions and scripts your agent will follow, and it can run code on your machine. Read the SKILL.md and any scripts first — this listing is not a security review.