Claude Skills Online Marketplace

Audit a component or page for accessibility issues and fix them

Design and build the UI states agents forget: first use, empty, loading, error, offline, no results, long content, permission denied and success.

Comprehensive guide to auditing web content against WCAG 2.2 guidelines with actionable remediation strategies.

To test local web applications, write native Python Playwright scripts.

Design and review API contract tests across providers and consumers. Use for schema changes, compatibility regressions and client integration failures.

Master REST and GraphQL API design principles to build intuitive, scalable, and maintainable APIs that delight developers and stand the test of time.

API documentation workflow for generating OpenAPI specs, creating developer guides, and maintaining comprehensive API documentation.

Builds reviewable REST API endpoint scaffolds with validation, error handling, authentication, and documentation. Follows best practices for security and scalability.

API design principles and decision-making. REST vs GraphQL vs tRPC selection, response formats, versioning, pagination.

Implement bounded, idempotency-aware API throttling, backoff, and retry handling for 429 and transient 5xx responses.

Implement secure API design patterns including authentication, authorization, input validation, rate limiting, and protection against common API vulnerabilities

Implement or review authentication and authorization with explicit token, session and resource-access boundaries.

Expert backend architect specializing in scalable API design, microservices architecture, and distributed systems.

You are a senior backend engineer operating production-grade services under strict architectural and reliability constraints. Use when routes, controllers, services, repositories,...

Build read models and projections from event streams. Use when implementing CQRS read sides, building materialized views, or optimizing query performance in event-sourced systems.

Patterns for managing distributed transactions and long-running business processes.

Plan and review system architecture using explicit requirements, tradeoffs and evidence; bundled scripts are incomplete stubs.

Expert patterns for Algolia search implementation, indexing strategies, React InstantSearch, and relevance tuning

Designs event-driven architectures, webhook systems, API chaining flows, ETL pipelines, and integration patterns between services.

Expert patterns for HubSpot CRM integration including OAuth authentication, CRM objects, associations, batch operations, webhooks, and custom objects. Covers Node.js and Python...