Skills Resources

Choosing and checking a resource

Start with the job you want an agent to do. For a Docker Compose draft, search for Docker and open the generator's instructions; review the suggested services, volumes and environment placeholders against your project. A prompt template asks an agent to produce a draft. It does not install Docker, validate a deployment or establish that the output is ready for production.

Choose the resource type before installing anything. Instructions and prompts are text to read and adapt. MCP configurations can connect an agent to another service, and plugin examples may refer to packages that must be obtained separately. Read the actual commands and requested permissions. Use a disposable project and synthetic data for a first check; avoid adding credentials to downloaded examples.

Search and filter metadata help narrow the list, but a compatibility label is an intended target, not a recorded test result. Open the listing and follow its source link when one is provided. Check the upstream version, installation instructions and license before copying, modifying or sharing material. An author name or an MIT label alone does not establish who owns every included file.

If a source, license, package or required capability cannot be verified, keep the resource out of a production workflow until that gap is resolved. Report the listing URL and the missing information to SimplyUtils through the contact page. Include a small non-confidential example of any instruction that fails, along with the application and version you tested.

• Accessibility Audit Helper - Reviews UI code and components for WCAG 2.1 accessibility violations and provides specific fixes.
• Agent Context File Writer - Writes a high-quality CLAUDE.md, .cursorrules, or .windsurfrules file that gives a coding agent the right project context, conventions, and constraints to work effectively.
• Agent Evaluation Framework Builder - Designs an eval suite for an LLM agent or pipeline including success metrics, trajectory scoring, LLM-as-judge setup, and regression test cases.
• AI Feature Spec Writer - Writes a complete product spec for an AI-powered feature including user stories, model requirements, fallback behavior, and evaluation criteria.
• API Documentation Generator - Generates OpenAPI-compatible documentation for REST API endpoints from code or route definitions.
• REST API Endpoint Designer - Prompt instructions for drafting REST endpoint paths, methods, status codes and an OpenAPI YAML example. Validate generated specifications against your API.
• Architecture Explainer - Reads a codebase or system description and produces a clear, structured architecture overview with diagrams.
• Article Repurposer - Takes a long-form article and repurposes it into multiple formats: tweet thread, LinkedIn post, TL;DR, and key quotes.
• Auth Flow Planner - Prompt instructions for planning registration, login, sessions and access roles. The resulting design still needs implementation and security review.
• Blog Outline Generator - Generates a detailed, SEO-optimized blog post outline with H2/H3 structure, key points per section, and a hook.
• Breaking Change Detector - Compares two versions of a codebase or API and flags all breaking changes with migration hints.
• Bug Root Cause Analyzer - Systematically diagnoses bugs by tracing execution flow and identifying root causes vs symptoms.
• Caching Strategy Advisor - Recommends the right caching layer, TTL strategy, and invalidation approach for any application bottleneck.
• Changelog Curator - Maintains and formats a CHANGELOG.md following Keep a Changelog conventions from git history or PR list.
• Code Review Checklist - Runs a systematic checklist review on any code diff or file, covering correctness, security, performance, and readability.
• Database Schema Reviewer - Reviews database schemas for normalization issues, missing indexes, naming inconsistencies, and scalability risks.
• Docker Compose Generator - Prompt instructions for drafting Docker Compose services, health checks, volumes and environment placeholders. Review and test the configuration for your own stack.
• Documentation Gap Finder - Audits a codebase or docs folder and lists everything that is undocumented, outdated, or unclear.
• Edge Case Discovery - Systematically identifies edge cases and boundary conditions for any function, API, or user flow.
• Error Log Summarizer - Parses raw error logs and produces a concise, prioritized summary of unique issues with root cause hints.
• FAQ Generator - Generates a comprehensive FAQ section for any product, API, or documentation page.
• Flaky Test Analyzer - Diagnoses why tests pass inconsistently and suggests fixes for timing, ordering, and state isolation issues.
• Form UX Optimizer - Reviews web forms for usability issues — field ordering, validation messages, error states, and accessibility.
• Git Commit Writer - Generates conventional commit messages from staged changes or a diff.
• Hallucination Risk Reviewer - Reviews an AI-generated response or LLM application output for factual risks, hallucination patterns, and confidence calibration issues.
• Hybrid Search Architect - Designs a hybrid retrieval pipeline combining dense vector search and BM25 sparse search with reciprocal rank fusion, and explains when to use each configuration.
• Incident Postmortem Writer - Writes a blameless incident postmortem document from an incident timeline or Slack thread.
• Issue to PR Planner - Takes a GitHub issue and produces a step-by-step implementation plan with file locations and code changes needed.
• Landing Page Copy Improver - Rewrites landing page copy to be more compelling, benefit-focused, and conversion-optimized.
• LangGraph State Machine Designer - Converts a workflow description into a LangGraph node/edge graph with typed state, conditional routing, and human-in-the-loop checkpoints.
• LLM Cost Optimizer - Audits an AI application for unnecessary token spend and recommends prompt caching, model routing, and token reduction techniques to cut costs.
• LLM Tracing and Observability Setup - Configures end-to-end tracing for an LLM application using OpenTelemetry with LangSmith, Langfuse, or Helicone — span naming, metadata tagging, latency thresholds, and cost tracking.
• MCP Integration Assistant - Helps design and implement Model Context Protocol (MCP) server integrations for AI agents.
• MCP Server Builder - Step-by-step guidance for creating a new MCP server with FastMCP or the TypeScript SDK — tool definitions, resource handlers, error responses, and usage examples.
• Migration Guide Writer - Writes clear migration guides for library upgrades, breaking API changes, or framework version bumps.
• Newsletter Summary Writer - Condenses long articles, threads, or documents into concise, engaging newsletter-ready summaries.
• Observability Checklist - Reviews a service or codebase against a full observability checklist — logs, metrics, traces, and alerting gaps.
• Playwright Test Builder - Generates robust Playwright end-to-end tests for web pages and user flows.
• PR Description Writer - Writes clear, thorough pull request descriptions from a diff or list of changes.
• Prompt Injection Defense Auditor - Reviews LLM application prompts and input handling for direct and indirect prompt injection vulnerabilities, then writes defensive scaffolding.
• Prompt Refiner - Improves AI prompts to be clearer, more specific, and produce more consistent outputs.
• Prompt Version Control Workflow - Sets up a prompt versioning system with naming conventions, diff tracking, A/B evaluation gates before promotion, and rollback triggers.
• RAG Chunking Strategy Advisor - Given a document type and retrieval goal, recommends the optimal chunking strategy for a RAG pipeline to minimize retrieval failures.
• RAG Workflow Planner - Designs a complete Retrieval-Augmented Generation (RAG) pipeline for a given use case, including chunking strategy, embedding model selection, and retrieval approach.
• React Component Reviewer - Analyzes React components for performance, accessibility, and modern hook usage.
• README Writer - Generates a professional, comprehensive README.md for any project from its codebase or description.
• Refactor Planner - Creates a safe, step-by-step plan to refactor messy code without breaking existing behavior.
• Release Notes Generator - Generates clear, user-friendly release notes from a git log or list of PRs.
• Responsive Layout Reviewer - Reviews HTML/CSS or component code for responsive design issues across mobile, tablet, and desktop breakpoints.
• SDK Quickstart Writer - Generates a concise, copy-paste-ready quickstart guide for any SDK or library.
• SEO Content Optimizer - Analyzes and rewrites content to maximize search engine visibility without sounding robotic.
• SEO Metadata Generator - Generates optimized title tags, meta descriptions, Open Graph tags, and structured data for any web page.
• Social Post Thread Writer - Converts a blog post, idea, or document into an engaging Twitter/X or LinkedIn thread with hooks and CTAs.
• Sprint Summary Generator - Converts a list of completed tickets or commits into a clear sprint summary for stakeholders.
• SQL Query Optimizer - Reviews SQL queries for performance issues and rewrites them with optimized execution plans.
• Stack Trace Analyzer - Interprets error stack traces to pinpoint root cause, explain what went wrong, and suggest fixes.
• Technical Blog Post Writer - Writes engaging, accurate technical blog posts targeted at developer audiences.
• Tech Debt Auditor - Identifies and prioritizes technical debt in a codebase with an effort/impact matrix.
• Troubleshooting Guide Builder - Builds a structured troubleshooting guide with symptom → cause → fix format for any tool or system.
• Unit Test Improver - Reviews existing unit tests for gaps, weak assertions, and missing edge cases, then rewrites them to be more robust.
• Unit Test Writer - Generates comprehensive unit tests for any function or module with edge cases.
• X Twitter Source Packet Builder - Converts reviewed X/Twitter evidence into compact source packets for research and writing workflows.