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Modern PHP development best practices including PHP 8.x features, OOP patterns, error handling, security, testing, and performance optimization. Use when writing PHP code, reviewing PHP projects, debugging PHP issues, or implementing PHP features outside of WordPress/Laravel specific contexts.

Write clear technical documentation for themes, plugins, and web products including installation guides, configuration docs, API references, tutorials, and changelogs. Use when creating user guides, developer docs, or help articles.

Guide for writing clear, descriptive commit messages

Bitwarden Passwordless.dev documentation, SDKs, and React examples

Professional copywriter for compelling headlines, sales copy, and persuasive writing techniques

Process modeling using BPMN notation and flowchart patterns. Creates process diagrams with activities, gateways, events, swimlanes, and decision points for workflow documentation.

Comprehensive scientific document review and analysis. Use when Claude needs to review scientific papers, reports, preprints, or other research documents for: (1) Identifying and evaluating claims and supporting evidence, (2) Assessing logical argumentation and experimental design, (3) Reviewing citation adequacy and suggesting additional references, (4) Determining document type and research contribution, (5) Checking technical accuracy and methodology, (6) Providing constructive feedback on presentation and clarity. Also handles language, grammar, and formatting review separately.

Move or rename a file while automatically updating all references in source code and documentation

4-step framework for system design interviews. Use when preparing for technical interviews, practicing whiteboard design, or structuring architectural discussions. Covers requirements gathering, high-level design, deep dives, and wrap-up.

Comprehensive meta-skill for creating, managing, validating, auditing, and distributing Claude Code skills. Provides skill templates, creation workflows, validation patterns, audit checklists, naming conventions, YAML frontmatter guidance, progressive disclosure examples, and best practices lookup. Use when creating new skills, validating existing skills, auditing skill quality, understanding skill architecture, needing skill templates, learning about YAML frontmatter requirements, progressive disclosure patterns, tool restrictions (allowed-tools), skill composition, skill naming conventions, or troubleshooting skill activation issues. Delegates to docs-management skill for official documentation.

Professional technical writing and documentation skill for creating and maintaining comprehensive, accurate, and user-friendly documentation for codebases, APIs, deployment processes, and end-user guides.

C4 model architecture visualization and documentation

Comprehensive template and guidelines for documenting Field Agents including technical specifications, system prompts, tool specifications, user interactions, and standardized documentation structure

Automated contract verification, detection, and remediation across multiple languages using formal preconditions, postconditions, and invariants. This skill provides both reference documentation AND execution capabilities for the full PLAN -> CREATE -> VERIFY -> REMEDIATE workflow.

Single source of truth and librarian for ALL Duende Software documentation. Manages local documentation storage, scraping, discovery, and resolution. Use when finding, locating, searching, or resolving Duende documentation; discovering docs by keywords, category, tags, or natural language queries; scraping from llms-full.txt; managing index metadata (keywords, tags, aliases); or rebuilding index from filesystem. Run scripts to scrape, find, and resolve documentation. Handles doc_id resolution, keyword search, natural language queries, category/tag filtering, alias resolution, llms-full.txt parsing, markdown subsection extraction for internal use, hash-based drift detection, and comprehensive index maintenance.

arc42 architecture documentation template and guidance

Generate and validate Python clients from OpenAPI specs. Use for generation, validation, or troubleshooting.

Test-Driven Development workflow for Miyabi. Red-Green-Refactor cycle with Rust-specific patterns. Use when implementing new features, fixing bugs, or writing tests.

Provides Jest-based TypeScript testing expertise and best practices. Ensures proper test structure, mocking strategies, async handling patterns, and coverage optimization. Specializes in unit testing, integration testing, test organization with describe/it blocks, jest.mock patterns, snapshot testing, and testing library integration for UI components.Use when: writing TypeScript test files (.spec.ts, .test.ts), structuring tests with describe/it/test blocks, implementing mocks with jest.mock/jest.spyOn, testing async code with async/await or promises, creating test fixtures and helpers, implementing snapshot tests, testing React components with Testing Library, measuring and improving code coverage, or configuring Jest for TypeScript projects.

Create and deliver effective technical presentations, demos, and talks. Provides frameworks for structuring content, designing slides, and handling live demos.