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Agent Skills

Agent-Skills.md is a agent skills marketplace, to find the right agent skills for you.

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react-performance-optimization

React performance optimization patterns using memoization, code splitting, and efficient rendering strategies. Use when optimizing slow React applications, reducing bundle size, or improving user experience with large datasets.

NickCrew
NickCrew
93

reasoning-controls

Use when adjusting reasoning depth, budgets, or metrics visibility - provides guidance for selecting and applying reasoning controls safely.

NickCrew
NickCrew
93

receiving-code-review

Use when receiving code review feedback, before implementing suggestions, especially if feedback seems unclear or technically questionable - requires technical rigor and verification, not performative agreement or blind implementation

NickCrew
NickCrew
93

reference-documentation

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NickCrew
NickCrew
93

release-prep

Use when preparing a production release or release candidate - provides a checklist-driven workflow for validation, versioning, build optimization, documentation updates, and deployment readiness.

NickCrew
NickCrew
93

repo-cleanup

Use when a repository needs cleanup of dead code, build artifacts, unused dependencies, outdated docs, or stale tests - provides safe cleanup workflows, validation steps, and reporting templates for code, deps, docs, tests, and sprint archives.

NickCrew
NickCrew
93

requesting-code-review

Use when completing tasks, implementing major features, or before merging to verify work meets requirements - dispatches superpowers:code-reviewer subagent to review implementation against plan or requirements before proceeding

NickCrew
NickCrew
93

socratic-questioning

Guide discovery through questioning techniques and pattern recognition for Clean Code, GoF design patterns, and architectural decisions. Use when coaching developers, facilitating design discussions, or helping teams discover solutions.

NickCrew
NickCrew
93

subagent-driven-development

Use when executing implementation plans with independent tasks in the current session - dispatches fresh subagent for each task with code review between tasks, enabling fast iteration with quality gates

NickCrew
NickCrew
93

super-saiyan

Maximum visual excellence for any UI platform. Use when building user interfaces, styling components, or polishing visual elements.

NickCrew
NickCrew
93

ui-design-aesthetics

Generates high-quality, non-generic UI designs with a focus on performance, progressive disclosure, and distinctive aesthetics.

NickCrew
NickCrew
93

user-journey-mapping

Create comprehensive user journey maps that identify pain points, opportunities, and emotional states across touchpoints. Use when mapping user experiences or analyzing conversion flows.

NickCrew
NickCrew
93

system-design

Use when designing system architecture, APIs, components, or data models - provides a structured design workflow with validation and documentation outputs.

NickCrew
NickCrew
93

systematic-debugging

Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes - four-phase framework (root cause investigation, pattern analysis, hypothesis testing, implementation) that ensures understanding before attempting solutions

NickCrew
NickCrew
93

task-orchestration

Use when coordinating complex tasks with orchestration, delegation, or parallel workstreams - provides structured workflows for orchestrate:brainstorm, orchestrate:spawn, and orchestrate:task.

NickCrew
NickCrew
93

template-skill

A template for creating new skills. Use when initializing a new skill to ensure proper structure and metadata.

NickCrew
NickCrew
93

terraform-best-practices

Terraform infrastructure-as-code best practices for scalable and maintainable cloud infrastructure. Use when writing Terraform modules, managing infrastructure state, or implementing infrastructure automation at scale.

NickCrew
NickCrew
93

test-driven-development

Use when implementing any feature or bugfix, before writing implementation code - write the test first, watch it fail, write minimal code to pass; ensures tests actually verify behavior by requiring failure first

NickCrew
NickCrew
93

test-generation

Use when generating tests for new or existing code to improve coverage - provides a structured workflow for analyzing code, creating tests, and validating coverage goals.

NickCrew
NickCrew
93

test-review

Review test quality and audit test coverage for any module. This skill should be used when reviewing existing tests, auditing test gaps, writing new tests, or when asked to assess test health. It pipelines testing standards into the audit workflow to produce a prioritized gap report. The output is a report, not code — do not write test implementations until the report is reviewed.

NickCrew
NickCrew
93

testing-anti-patterns

Use when writing or changing tests, adding mocks, or tempted to add test-only methods to production code - prevents testing mock behavior, production pollution with test-only methods, and mocking without understanding dependencies

NickCrew
NickCrew
93

testing-skills-with-subagents

Use when creating or editing skills, before deployment, to verify they work under pressure and resist rationalization - applies RED-GREEN-REFACTOR cycle to process documentation by running baseline without skill, writing to address failures, iterating to close loopholes

NickCrew
NickCrew
93

threat-modeling-techniques

Threat modeling methodologies using STRIDE, attack trees, and risk assessment for proactive security analysis. Use when designing secure systems, conducting security reviews, or identifying potential attack vectors in applications.

NickCrew
NickCrew
93

token-efficiency

Compressed communication using symbols and abbreviations. Use when context is limited or brevity is needed.

NickCrew
NickCrew
93

tool-selection

Use when selecting between MCP tools based on task complexity and requirements - provides a structured selection workflow and decision rationale.

NickCrew
NickCrew
93

tutorial-design

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NickCrew
NickCrew
93

typescript-advanced-patterns

Advanced TypeScript patterns for type-safe, maintainable code using sophisticated type system features. Use when building type-safe APIs, implementing complex domain models, or leveraging TypeScript's advanced type capabilities.

NickCrew
NickCrew
93

api-gateway-patterns

API Gateway patterns for routing, authentication, rate limiting, and service composition in microservices architectures. Use when implementing API gateways, building BFF layers, or managing service-to-service communication at scale.

NickCrew
NickCrew
93

agent-loops

Complete operational workflow for implementer agents (Codex, Gemini, etc.) making code changes and writing tests. Defines the Code Change Loop, Test Writing Loop, and Issue Filing process with circuit breakers, severity levels, and escalation rules. Includes bundled scripts for specialist-review (code review) and test-review-request (test audit) that delegate to Claude CLI. Use this skill when starting any implementation task.

NickCrew
NickCrew
93

claude-consult

Consult Claude specialist agents during implementation for codebase understanding, pattern checking, security review, debugging help, and more. Use this skill whenever you're unsure about conventions, stuck on a failure, or need expert input before writing code. Does not replace the formal review gates in agent-loops — this is for mid-implementation consultation.

NickCrew
NickCrew
93

skill-creator

Guide for creating effective skills. This skill should be used when users want to create a new skill (or update an existing skill) that extends Codex's capabilities with specialized knowledge, workflows, or tool integrations.

NickCrew
NickCrew
93

skill-installer

Install Codex skills into $CODEX_HOME/skills from a curated list or a GitHub repo path. Use when a user asks to list installable skills, install a curated skill, or install a skill from another repo (including private repos).

NickCrew
NickCrew
93

a10-brand

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NickCrew
NickCrew
93

accessibility-audit

Fast, high-signal accessibility triage for pages, components, or PRs targeting WCAG 2.2 AA compliance.

NickCrew
NickCrew
93

api-design-patterns

Comprehensive REST and GraphQL API design patterns with versioning, pagination, error handling, and HATEOAS principles. Use when designing APIs, defining endpoints, or architecting service contracts requiring production-grade patterns.

NickCrew
NickCrew
93

async-python-patterns

Python asyncio and concurrent programming patterns for high-performance applications. Use when building async APIs, concurrent systems, or I/O-bound applications requiring non-blocking operations.

NickCrew
NickCrew
93

backlog-md

Task tracking system for agents via Backlog.md CLI. Use when creating deferred issues during implementation, filing audit findings, working assigned tasks, or managing project work. Optimized for agent workflows: structured issue filing, priority/labeling system, and task completion tracking.

NickCrew
NickCrew
93

build-optimization

Build system optimization covering compilation, caching, incremental builds, and developer tooling. Use when improving build times, configuring CI pipelines, or designing developer tools.

NickCrew
NickCrew
93

canvas-design

Create beautiful visual art in .png and .pdf documents using design philosophy. Use when the user asks to create a poster, piece of art, design, or other static piece. Create original visual designs, never copying existing artists' work to avoid copyright violations.

NickCrew
NickCrew
93

codanna-codebase-intelligence

Use codanna MCP tools for semantic code search, call graphs, and impact analysis before grep/find.

NickCrew
NickCrew
93

code-explanation

Use when explaining code, concepts, or system behavior to a specific audience level - provides a structured explanation workflow with depth control and validation steps.

NickCrew
NickCrew
93

code-quality-workflow

Use when assessing or improving code quality, maintainability, performance, or security hygiene - provides workflows for analysis, code review, and systematic improvements with validation steps.

NickCrew
NickCrew
93

assumption-buster

Flip, remove, or exaggerate assumptions to unlock new solution angles.

NickCrew
NickCrew
93

brainstorming

Rapid ideation skill adapted from obra/superpowers to kick off cortex sessions. Use when defining scope, aligning on goals, or exploring solution space before coding.

NickCrew
NickCrew
93

concept-forge

Score concepts on impact/delight/effort and pick a 1-day spike.

NickCrew
NickCrew
93

executing-plans

Execution discipline skill adapted from obra/superpowers. Ensures plans translate into tracked tasks, orchestration, and verification runs.

NickCrew
NickCrew
93

idea-lab

Timeboxed divergent ideation that outputs ranked options plus day-one experiments.

NickCrew
NickCrew
93

mashup

Force-fit patterns from other domains to spark novel concepts.

NickCrew
NickCrew
93

pre-mortem

Imagine failure first to surface guardrails and feature mitigations.

NickCrew
NickCrew
93

writing-plans

Structured plan-writing skill adapted from obra/superpowers. Produces actionable plans that map directly to cortex workflows and tasks.

NickCrew
NickCrew
93

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Adoption

Agent Skills are supported by leading AI development tools.

FAQ

Frequently asked questions about Agent Skills.

01

What are Agent Skills?

Agent Skills are reusable, production-ready capability packs for AI agents. Each skill lives in its own folder and is described by a SKILL.md file with metadata and instructions.

02

What does this agent-skills.md site do?

Agent Skills is a curated directory that indexes skill repositories and lets you browse, preview, and download skills in a consistent format.

03

Where are skills stored in a repo?

By default, the site scans the skills/ folder. You can also submit a URL that points directly to a specific skills folder.

04

What is required inside SKILL.md?

SKILL.md must include YAML frontmatter with at least name and description. The body contains the actual guidance and steps for the agent.

05

How can I submit a repo?

Click Submit in the header and paste a GitHub URL that points to a skills folder. We’ll parse it and add any valid skills to the directory.