Claude Skills by karsten-s-nielsen

Comprehensive architecture audit with two modes and a single tier (beta). Planning mode evaluates architectural patterns, bounded context decomposition, dependency direction, and SOLID compliance for new systems. Audit mode scans existing codebases for architectural drift, coupling violations, domain model quality, dependency direction violations, and structural anti-patterns. Grounded in Hexagonal Architecture (Cockburn), Domain-Driven Design (Evans/Vernon), Clean Architecture (Martin), SOLI...

Creates interactive C4 model architecture diagrams using Structurizr DSL — the official C4 notation by Simon Brown. Produces self-contained single-file HTML visualizations with embedded SVGs rendered locally via Java 21+ and the Structurizr export pipeline (structurizr.war + plantuml.jar). Generates System Context, Container, Component, Dynamic, and Deployment diagrams with tabbed navigation, DSL panel, and copyable Structurizr DSL source. Requires Java 21+. Use when the user asks for archite...

Comprehensive cognitive interface audit with two modes and a single tier. Planning mode designs task models, user expertise mapping, and error tolerance strategy. Audit mode evaluates mental model alignment (Norman's Gulfs), consistency (Gestalt), error tolerance (Wood 7-layer defense), cognitive load (NASA-TLX, Dual-Process), visual grounding (Gergle), trust calibration (Lee & See), data visualization integrity (Kirk, Cleveland & McGill, Brewer ColorBrewer palette enforcement), ecological co...

Comprehensive documentation audit with two modes and a single tier. Planning mode designs documentation strategy, content type maps, learning paths, and scaffolding architecture. Audit mode evaluates linguistic precision (Strunk & White, Google/Microsoft style guides), structural taxonomy (Diataxis quadrant classification, Good Docs Project), pedagogical scaffolding (Carroll's Minimalism, Cognitive Load Theory, Merrill's First Principles, Lemov techniques), cross-document consistency, reposit...

Pre-commit quality gate — reviews all code and documentation for consistency, best practices, and completeness, then generates or updates the C4 architecture diagram. Use before committing, or when you want a thorough quality check of the project. Triggers on phrases like "final review", "pre-commit check", "review everything before commit", or "make sure everything is up to date".

Pre-change measurement gate for perf-sensitive functions. Use BEFORE modifying any function that has a pytest-benchmark test, appears in a performance baselines file, or is flagged as a hot path in CLAUDE.md. Captures baseline median and p95, verifies the change does not regress beyond a configurable threshold, reports the delta. Peer skill to optimization-audit — this one is pre-change; that one is retrospective.

Comprehensive observability audit with two modes and two tiers (beta). Planning mode designs telemetry strategy, SLIs/SLOs, and instrumentation architecture. Audit mode scans code and infrastructure for observability gaps including logging, metrics, tracing, alerting, pipeline monitoring, and ML model drift detection. Each phase has Standard (free/open-source tools, always actionable) and Enterprise (paid observability platforms, aspirational checklist) tiers. Use when asked to "observability...

Comprehensive optimization audit with two modes and a single tier. Planning mode designs performance strategy, capacity planning, and scaling architecture. Audit mode scans code and infrastructure for performance anti-patterns, inefficient algorithms, N+1 queries, missing caching, concurrency issues, and resource waste. Single tier — optimization tools are overwhelmingly free/open-source. Use when asked to "optimization audit", "performance review", "find bottlenecks", "optimize this", "check...

Comprehensive security audit with two modes and two tiers. Planning mode reviews architecture for security gaps (STRIDE threat modeling, auth design, data classification, AI regulatory compliance). Audit mode scans code, infrastructure, dependencies, and secrets for vulnerabilities. Covers OWASP Top 10, ML/AI model security (serialization safety, provenance, poisoning), AI regulatory compliance (EU AI Act, biometric privacy, EU Data Act), web security headers, API boundary security, authentic...