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Agent skills

Skills you can use with AI coding agents, indexed from public GitHub repositories.

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validator Synthesizes validation analysis into a structured 8-section report with clear verdict (GOOD / NEEDS MAJOR WORK / BAD), strengths, critical flaws, blindspots, and actionable path forward. Use after assumption-challenger and antipattern-detector have produced their analyses, or standalone for quick validations. Produces the final deliverable for /validate.
kwiggen/claude-code-plugin 1
feature-writer Guides users through defining features via adaptive discussion and generates structured feature 1-pagers. Use when users want to create a well-documented feature request or need help articulating a feature idea. The discussion is conversational, not a form - follow threads, ask follow-ups, and refine until the user is satisfied.
kwiggen/claude-code-plugin 1
release-reports Generates weekly release cycle reports for the team. - preview: What's shipping (run Sunday after release train) - retro: What happened (run Tuesday after prod stabilizes)
kwiggen/claude-code-plugin 1
gemini-advisor Gets Gemini's independent opinion on any file, topic, or discussion. Use when users say "ask gemini", "gemini opinion", or "what does gemini think". Provides a second perspective from a different AI model with Claude's commentary. Requires GEMINI_API_KEY environment variable to be set.
kwiggen/claude-code-plugin 1
gemini-review This skill orchestrates code review and plan validation using Google Gemini CLI. It should be used when users want to validate implementation plans, review completed code, or discuss architecture decisions with Gemini as a second opinion. Supports FastAPI, Next.js, and general tech stacks with specialized checklists. Uses gemini-3-pro-preview model with free tier (60 req/min, 1000 req/day).
jsshin-hamsterlab/claude-skills 2
pr-documentation-uml Generate PR documentation with UML diagrams based on Git branch differences. Explains modification reasons, content, and implementation. Uses Mermaid to draw architecture, class, sequence diagrams with exact code element names matching actual code.
YoungY620/pr-summary-skills
prompt-design Core prompt design patterns and templates for effective LLM communication
pluginagentmarketplace/custom-plugin-prompt-engineering 2
prompt-evaluation Prompt testing, metrics, and A/B testing frameworks
pluginagentmarketplace/custom-plugin-prompt-engineering 2
react-pattern Reasoning and Acting patterns for agentic LLM workflows
pluginagentmarketplace/custom-plugin-prompt-engineering 2
few-shot-prompting Example-based prompting techniques for in-context learning
pluginagentmarketplace/custom-plugin-prompt-engineering 2
fine-tuning LLM fine-tuning and prompt-tuning techniques
pluginagentmarketplace/custom-plugin-prompt-engineering 2
chain-of-thought Step-by-step reasoning patterns for complex problem solving
pluginagentmarketplace/custom-plugin-prompt-engineering 2
safety-guardrails LLM safety guardrails and content moderation
pluginagentmarketplace/custom-plugin-prompt-engineering 2
structured-output JSON, XML, and structured data generation patterns
pluginagentmarketplace/custom-plugin-prompt-engineering 2
agent-design AI agent design and tool-use prompting patterns
pluginagentmarketplace/custom-plugin-prompt-engineering 2
multi-modal Multi-modal prompting with vision, audio, and document understanding
pluginagentmarketplace/custom-plugin-prompt-engineering 2
prompt-injection Prompt injection attack prevention and defense
pluginagentmarketplace/custom-plugin-prompt-engineering 2
prompt-templates Reusable prompt templates for common tasks and optimization patterns
pluginagentmarketplace/custom-plugin-prompt-engineering 2
example-helper Example skill demonstrating Claude Code capabilities. Activates when user mentions "example", "demo", or "template". Shows how to create effective Skills with proper structure. Use when user wants to see skill examples or understand skill creation.
squirrelsoft-dev/claude-builder 3
plugin-scaffolder Scaffolds complete Claude Code plugin structures with all necessary directories, manifest, and documentation. Activates when user wants to create a new plugin, package features together, or prepare for marketplace distribution. Creates plugin.json, directory structure, and starter documentation. Use when user mentions "create plugin", "new plugin", "scaffold plugin", "plugin structure", or "share via marketplace".
squirrelsoft-dev/claude-builder 3
skill-generator Generates new Claude Code Skills with intelligent defaults. Activates when user discusses creating a new skill, capability, or reusable workflow. Infers purpose from context, creates proper YAML frontmatter, suggests tool restrictions, and sets up supporting file structure. Use when user mentions "create a skill", "new skill", "skill for", or discusses adding reusable capabilities.
squirrelsoft-dev/claude-builder 3
hook-generator Creates and configures Claude Code hooks for event-driven automation. Activates when user wants to automate tasks, create event handlers, add formatting/logging/notifications, or ensure deterministic behaviors. Updates settings.json safely with hook configurations. Use when user mentions "create hook", "automate", "on save", "pre/post tool", "notification", "formatting hook", or wants always-on behaviors.
squirrelsoft-dev/claude-builder 3
subagent-generator Generates custom Claude Code subagents with specialized expertise. Activates when user wants to create a subagent, specialized agent, or task-specific AI assistant. Creates properly formatted .md files with YAML frontmatter, suggests tool restrictions and model selection, generates effective system prompts. Use when user mentions "create subagent", "new agent", "specialized agent", "task-specific agent", or wants isolated context for domain-specific work.
squirrelsoft-dev/claude-builder 3
extensibility-advisor Advises on choosing the right Claude Code extensibility approach (Skills, Commands, Subagents, Hooks, Plugins, MCP, Output Styles). Activates when user discusses extending Claude Code, creating automation, or is unsure which feature to use. Analyzes use cases and recommends appropriate solutions with trade-off explanations. Use when user mentions "should I use", "what's the best way", "skill or command", "which approach", or discusses extensibility options.
squirrelsoft-dev/claude-builder 3