SkilletBest Development & Code Tools skills
32 hand-picked development & code tools skills for Claude, Cursor, Codex and other agents. Each one is portable, reviewed, and ready to install.
artifacts-builder
Suite of tools for creating elaborate, multi-component claude.ai HTML artifacts using modern frontend web technologies (React, Tailwind CSS, shadcn/ui).
aws-skills
AWS development with CDK best practices, cost optimization MCP servers, and serverless/event-driven architecture patterns.
building-blog
Adds an SEO-first, i18n-ready blog to a Next.js + Sanity site via a 40-question intake, a one-page plan, and a 20-section spec. Includes a generator for AI hero images via Gemini 3 Pro Image (Nano Banana Pro).
Changelog Generator
Automatically creates user-facing changelogs from git commits by analyzing history and transforming technical commits into customer-friendly release notes.
Chrome Relay
Drives the user's already-open Chrome session — cookies, SSO, extensions, localhost — through a local CLI bridge. Real-Chrome counterpart to Playwright Browser Automation; install via `npx skills add chrome-relay` + a [Chrome Web Store extension](https://chromewebstore.google.com/detail/chrome-relay/cpdiapbifblhlcpnmlmfpgfjlacebokb). No remote relay, no Playwright fixtures, no MCP server needed.
Claude Code Terminal Title
Gives each Claud-Code terminal window a dynamic title that describes the work being done so you don't lose track of what window is doing what.
Connect
Connect Claude to any app. Send emails, create issues, post messages, update databases - take real actions across Gmail, Slack, GitHub, Notion, and 1000+ services.
D3.js Visualization
Teaches Claude to produce D3 charts and interactive data visualizations.
FFUF Web Fuzzing
Integrates the ffuf web fuzzer so Claude can run fuzzing tasks and analyze results for vulnerabilities.
finishing-a-development-branch
Guides completion of development work by presenting clear options and handling chosen workflow.
Full-Page Screenshot
Captures full-page screenshots of web pages via Chrome DevTools Protocol with zero dependencies.
great_cto
Claude Code plugin: 7 specialised subagents (tech-lead, senior-dev, qa-engineer, security-officer, devops, l3-support, project-auditor) orchestrating a full SDLC pipeline — architecture, TDD, 12-angle code review, QA, security audit, deploy. 11 project archetypes auto-detected, 13 compliance frameworks (GDPR/PCI-DSS/HIPAA/SOC2/ISO 27001), self-improving knowledge layer that learns from every incident.
iOS Simulator
Enables Claude to interact with iOS Simulator for testing and debugging iOS applications.
jules
Delegate coding tasks to Google Jules AI agent for async bug fixes, documentation, tests, and feature implementation on GitHub repos.
LangSmith Fetch
Debug LangChain and LangGraph agents by automatically fetching and analyzing execution traces from LangSmith Studio. First AI observability skill for Claude Code.
lean-ctx
MCP server and context runtime for AI coding agents: session caching, AST-aware compression, and 90+ shell patterns to reduce token usage. Supports Claude Code, Cursor, Copilot, and other integrations. Install the Claude Code skill with `lean-ctx init --agent claude-code`; docs at [leanctx.com](https://leanctx.com).
MCP Builder
Guides creation of high-quality MCP (Model Context Protocol) servers for integrating external APIs and services with LLMs using Python or TypeScript.
move-code-quality-skill
Analyzes Move language packages against the official Move Book Code Quality Checklist for Move 2024 Edition compliance and best practices.
OpenWeb
Agent-native way to access any website. Calls the same APIs the website calls (JSON in, JSON out) with auth (cookies, JWT, CSRF, signing) auto-resolved per request. 90+ sites built in.
overkill
Surfaces advanced, maximalist alternatives to whatever solution is being discussed — advanced data structures, distributed-systems algorithms, niche frameworks, design patterns, and frontier tooling — each ranked on a calibrated complexity scale with learning links and the scenario in which the path pays off.
Playwright Browser Automation
Model-invoked Playwright automation for testing and validating web applications.
prompt-engineering
Teaches well-known prompt engineering techniques and patterns, including Anthropic best practices and agent persuasion principles.
pypict-claude-skill
Design comprehensive test cases using PICT (Pairwise Independent Combinatorial Testing) for requirements or code, generating optimized test suites with pairwise coverage.
reddit-fetch
Fetches Reddit content via Gemini CLI when WebFetch is blocked or returns 403 errors.
Septim Agents Pack
10 named Claude Code sub-agents (Atlas, Luca, Canon, Ember, Tally, Nova, Ward, Mira, Juno, Pip) covering planning, architecture, brand, marketing, finance, design, legal, customer, research, and coordination. Drop into `.claude/agents/`.
Skill Creator
Provides guidance for creating effective Claude Skills that extend capabilities with specialized knowledge, workflows, and tool integrations.
Skill Seekers
Automatically converts any documentation website into a Claude AI skill in minutes.
software-architecture
Implements design patterns including Clean Architecture, SOLID principles, and comprehensive software design best practices.
subagent-driven-development
Dispatches independent subagents for individual tasks with code review checkpoints between iterations for rapid, controlled development.
test-driven-development
Use when implementing any feature or bugfix, before writing implementation code.
using-git-worktrees
Creates isolated git worktrees with smart directory selection and safety verification.
Webapp Testing
Tests local web applications using Playwright for verifying frontend functionality, debugging UI behavior, and capturing screenshots.