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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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scriptwriting-methodology

Direct response copywriting frameworks for video scripts. Includes DR formula, PAS, AIDA, hook formulas, CTA best practices, and conversion optimization. Auto-activates when writing scripts, sponsored content, affiliate content, hooks, CTAs, or copywriting for video. Use when discussing scriptwriting, DR formula, PAS framework, hooks, calls to action, or conversion copy.

mike-coulbourn
mike-coulbourn
415

skill-builder

Create new Skills for Claude Code including YAML frontmatter, descriptions, instructions, and structure. Use when creating, building, or designing skills, or when asked about skill creation, structure, best practices, or debugging skills that don't activate properly.

mike-coulbourn
mike-coulbourn
415

slash-command-builder

Create custom slash commands for Claude Code including syntax, arguments, bash execution, file references, and frontmatter configuration. Use when creating slash commands, custom commands, .md command files, or when asked about command creation, /command syntax, or command best practices.

mike-coulbourn
mike-coulbourn
415

tagline-creation-strategies

Provides tagline and slogan creation frameworks including Marty Neumeier's Truelines vs Taglines, David Ogilvy's headline principles, Eugene Schwartz's desire channeling, the Distillation Method, and AIDA testing framework. Auto-activates during tagline creation, slogan development, and brand catchphrase work. Use when discussing taglines, slogans, catchphrases, brand mottos, truelines, memorable phrases, tagline testing, or brand mantra.

mike-coulbourn
mike-coulbourn
415

visual-identity-direction

Provides visual identity direction and creative briefing frameworks including Alina Wheeler's five-phase process, strategy-to-visual translation method, mood board methodology, logo brief structure, photography style frameworks, and typography/color direction. Auto-activates during visual direction, creative briefing, mood board creation, logo brief writing, and visual identity system work. Use when discussing visual direction, creative briefs, mood boards, logo briefs, photography style, visual identity, visual strategy, visual translation, visual expression, design direction, or visual language.

mike-coulbourn
mike-coulbourn
415

accessibility-audit

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

nickcrew
nickcrew
4114

agent-loops

Complete operational workflow for implementer agents (Codex, Gemini, etc.) making code changes and writing tests. Drives all work through atomic commits — each loop operates on the smallest complete, reviewable change. Defines the Code Change Loop, Test Writing Loop, Lint Gate, and Issue Filing process with circuit breakers, severity levels, and escalation rules. Requires `cortex git commit` for all commits. Includes bundled provider-aware review scripts that keep same-model shell-outs as the last resort, plus a fresh-context Codex fallback for code review and test audit. Use this skill when starting any implementation task.

nickcrew
nickcrew
4114

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
4114

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
4114

assumption-buster

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

nickcrew
nickcrew
4114

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
4114

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
4114

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
4114

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
4114

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
4114

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
4114

codanna-codebase-intelligence

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

nickcrew
nickcrew
4114

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
4114

codex-code-review

Automate code review remediation loops with the codex CLI. Requests reviews from codex, classifies findings by severity (P0-P4), fixes critical issues (P0/P1) through iterative cycles, defers quality improvements to backlog, and escalates after 3 review cycles. Use when working with code that needs structured remediation: ''codex review'' in a request triggers this workflow.

nickcrew
nickcrew
4114

compliance-audit

Regulatory compliance auditing across GDPR, HIPAA, PCI DSS, SOC 2, and ISO frameworks with automated evidence collection and gap analysis. Use when conducting compliance assessments, preparing for certifications, or implementing regulatory controls.

nickcrew
nickcrew
4114

concept-forge

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

nickcrew
nickcrew
4114

condition-based-waiting

Use when tests have race conditions, timing dependencies, or inconsistent pass/fail behavior - replaces arbitrary timeouts with condition polling to wait for actual state changes, eliminating flaky tests from timing guesses

nickcrew
nickcrew
4114

constructive-dissent

Structured disagreement protocols that expose weaknesses, test assumptions, and generate alternatives. Use when stress-testing proposals, playing devil's advocate, challenging architectural decisions, or auditing assumptions before finalizing plans.

nickcrew
nickcrew
4114

cortex-skills-loop

Drives the cortex skills recommend-feedback-rate loop. Use when a context change occurs (new file types, domain shift, task pivot) or when a task completes and skill effectiveness should be recorded.

nickcrew
nickcrew
4114

cqrs-event-sourcing

CQRS and Event Sourcing patterns for scalable, auditable systems with separated read/write models. Use when building audit-required systems, implementing temporal queries, or designing high-scale applications with complex domain logic.

nickcrew
nickcrew
4114

database-design-patterns

Database schema design patterns and optimization strategies for relational and NoSQL databases. Use when designing database schemas, optimizing query performance, or implementing data persistence layers at scale.

nickcrew
nickcrew
4114

defense-in-depth

Use when invalid data causes failures deep in execution, requiring validation at multiple system layers - validates at every layer data passes through to make bugs structurally impossible

nickcrew
nickcrew
4114

design-system-architecture

Build scalable design systems with design tokens, component APIs, and documentation. Use when creating or evolving component libraries.

nickcrew
nickcrew
4114

development-estimation

Use when estimating time, effort, or complexity for features or projects - provides structured estimation workflows with breakdowns, risks, and confidence intervals.

nickcrew
nickcrew
4114

dev-workflows

Use when running builds, executing tests, or improving developer experience workflows - provides structured guidance for build/test execution and DX improvement.

nickcrew
nickcrew
4114

dispatching-parallel-agents

Use when facing 3+ independent failures that can be investigated without shared state or dependencies - dispatches multiple Claude agents to investigate and fix independent problems concurrently

nickcrew
nickcrew
4114

doc-architecture-review

Evaluate documentation information architecture: navigation paths, discoverability, progressive disclosure, cross-linking, and mental model alignment. This skill should be used when restructuring docs, adding new sections, or when users report difficulty finding information.

nickcrew
nickcrew
4114

doc-claim-validator

Validate that claims in documentation match codebase reality. Extracts verifiable assertions (file paths, commands, function references, behavioral claims, dependencies) from markdown docs and checks them against the actual project. Use after code changes, before releases, or when docs feel untrustworthy.

nickcrew
nickcrew
4114

doc-completeness-audit

Audit documentation completeness by mapping what a doc set should cover against what it actually covers. Produces a prioritized gap report by topic, not just by file. This skill should be used after shipping features, before releases, or when users report missing documentation.

nickcrew
nickcrew
4114

doc-health-audit

Orchestrate a full documentation health audit across five dimensions: structural health, semantic accuracy, topic completeness, prose quality, and information architecture. Runs each phase in dependency order with phase gating. This skill should be used for pre-release audits, periodic health checks, or comprehensive documentation assessments.

nickcrew
nickcrew
4114

doc-maintenance

Systematic documentation audit and maintenance. This skill should be used when documentation may be stale, missing, or misorganized — after feature work, refactors, dependency upgrades, or as a periodic health check. It prescribes folder structure for docs/ and manual/, dispatches haiku subagents for codebase/doc scanning, and routes doc creation to specialized agents (reference-builder, technical-writer, learning-guide) with docs-architect as quality gate.

nickcrew
nickcrew
4114

doc-quality-review

Assess documentation quality across readability, consistency, audience fit, and prose clarity. Produces a scored review with actionable findings. This skill should be used before releases, during doc reviews, or when documentation feels unclear or inconsistent.

nickcrew
nickcrew
4114

documentation-production

Use when generating, updating, or organizing documentation (component/API docs, project indexes, diagrams, tutorials, learning paths) - provides structured workflows and references for docs generation, indexing, diagrams, and teaching.

nickcrew
nickcrew
4114

docx

Comprehensive document creation, editing, and analysis with support for tracked changes, comments, formatting preservation, and text extraction. When Claude needs to work with professional documents (.docx files) for: (1) Creating new documents, (2) Modifying or editing content, (3) Working with tracked changes, (4) Adding comments, or any other document tasks

nickcrew
nickcrew
4114

evaluator-optimizer

Iterative refinement workflow for polishing code, documentation, or designs through systematic evaluation and improvement cycles. Use when refining drafts into production-grade quality.

nickcrew
nickcrew
4114

event-driven-architecture

Event-driven architecture patterns with event sourcing, CQRS, and message-driven communication. Use when designing distributed systems, microservices communication, or systems requiring eventual consistency and scalability.

nickcrew
nickcrew
4114

executing-plans

Execution discipline that translates plans into tracked tasks with orchestration and verification loops. Use when driving a plan through cortex’s task system, coordinating workstreams across agents, or ensuring every plan item is tracked, executed, and verified.

nickcrew
nickcrew
4114

feature-implementation

Use when implementing a feature or multi-file code change - provides structured implementation flow with persona selection, validation, and testing guidance.

nickcrew
nickcrew
4114

finishing-a-development-branch

Use when implementation is complete, all tests pass, and you need to decide how to integrate the work - guides completion of development work by presenting structured options for merge, PR, or cleanup

nickcrew
nickcrew
4114

github-actions-workflows

GitHub Actions workflow patterns for CI/CD including matrix builds, reusable workflows, secrets management, and caching strategies. Use when setting up or optimizing GitHub Actions pipelines.

nickcrew
nickcrew
4114

git-ops

Use when performing git operations or generating smart commit messages - provides safe git workflow guidance, validation checks, and conventional commit formatting.

nickcrew
nickcrew
4114

gitops-workflows

GitOps workflows and patterns using ArgoCD and Flux for declarative Kubernetes deployments. Use when implementing CI/CD for Kubernetes, managing multi-environment deployments, or adopting declarative infrastructure practices.

nickcrew
nickcrew
4114

helm-chart-patterns

Helm chart development patterns for packaging and deploying Kubernetes applications. Use when creating reusable Helm charts, managing multi-environment deployments, or building application catalogs for Kubernetes.

nickcrew
nickcrew
4114

idea-lab

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

nickcrew
nickcrew
4114

implementation-workflow

Use when turning PRDs or feature specs into actionable implementation workflows - provides structured task decomposition, dependency mapping, and validation gates.

nickcrew
nickcrew
4114

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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.