Claude Code Skills·Claude Skills·The open SKILL.md registry for Claude
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marvinrichter

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134 Claude Code skills authored by marvinrichter.

updated 2026-08-21 · showing 1–60 of 134 by quality score

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Advanced Edge Computing patterns — streaming responses (TransformStream, Server-Sent Events), edge caching (Cache API, stale-while-revalidate), Miniflare testing, and common edge…
Data Mesh architecture patterns — domain ownership, data products with SLOs, self-serve platform design, Delta Lake vs Iceberg, federated Trino queries, data contracts,…
DORA Four Keys technical implementation: extracting metrics from GitHub/GitLab APIs, Google Four Keys open-source setup, LinearB/Faros/Haystack alternatives, Grafana DORA…
TypeScript, JavaScript, React, and Node.js coding standards — naming conventions, immutability, error handling, async patterns, component structure, API design.
Playwright E2E test patterns for Web3 and blockchain features — mocking wallet providers (MetaMask, Phantom), testing wallet connection flows, and handling async blockchain…
Create zero-dependency, animation-rich HTML presentations from scratch or by converting PowerPoint/PPTX files.
Serverless patterns: cold start optimization (Provisioned Concurrency, SnapStart, keep-warm), event source mapping (S3/SQS/DynamoDB Streams/EventBridge), AWS Step Functions,…
Advanced Micro-Frontend patterns — testing strategy (unit per-remote, integration with mocked remotes, E2E full composition via Playwright), CI/CD independent deployments per…
Advanced multi-agent patterns — capability registry, durable state (Redis/DynamoDB), task decomposition, testing multi-agent systems, pattern quick-selection guide, failure…
Autonomous overnight development pipeline. Analyzes a feature idea and selects the right pipeline pattern (Sequential, Continuous Claude, Ralphinho, or Infinite Loop).
SLI/SLO/SLA and error budget workflow: define service level indicators, set objectives, calculate error budgets, implement burn rate alerting, and use error budgets to gate risky…
Open source project governance: GitHub issue/PR templates, CODEOWNERS, CONTRIBUTING.md structure, community health files, label taxonomy, branch protection rules, and automated…
TDD anti-patterns — writing code before tests, testing implementation details instead of behavior, using waitForTimeout as a sync strategy, chaining tests that share state,…
Reference guide for writing, testing, and configuring clarc hooks — PreToolUse, PostToolUse, SessionStart, SessionEnd patterns with suppression and cooldown.
Advanced Ruby patterns — DDD with domain objects, Sorbet type system, value objects, event sourcing, background jobs, and API response standards with RFC 7807.
Advanced Go testing — interface-based mocking, benchmarks (basic, size-parametrized, allocation), fuzzing (Go 1.18+), test coverage, HTTP handler testing with httptest, best…
Idiomatic Dart patterns: Sound Null Safety (?, !, ??, ??=, ?.), Extension Methods, Mixins with constraints, Sealed Classes (Dart 3) with exhaustive pattern matching,…
DevSecOps patterns — shift-left security, SAST (semgrep/CodeQL), secrets detection (gitleaks/trufflehog), dependency scanning (trivy/grype), DAST, OPA/Falco policy-as-code,…
Cache expensive file processing results using SHA-256 content hashes — path-independent, auto-invalidating, with service layer separation.
Engineering effectiveness metrics: DORA Four Keys (Deployment Frequency, Lead Time, Change Failure Rate, MTTR), SPACE Framework (Satisfaction, Performance, Activity,…
gRPC + Protocol Buffers patterns — proto schema design, code generation, unary and streaming call types, error handling with gRPC status codes, interceptors, reflection, and…
Terraform in CI/CD — plan on PR, apply on merge, OIDC auth, drift detection, importing existing resources, common CLI commands, anti-patterns, and Terraform vs Pulumi vs CDK…
Hexagonal architecture (ports & adapters) for TypeScript Node.js backends. Package structure, port definitions, use case implementation, adapter patterns, DI wiring, and testing…
Idiomatic Bash scripting patterns: script structure, argument parsing, error handling, logging, temp files, parallel execution, and portability.
Idiomatic Scala patterns: ADTs with sealed traits and case classes, typeclass pattern, Option/Either/Try error handling, for-comprehensions, Cats Effect (IO, Resource, Ref,…
R patterns: tidyverse data pipelines with dplyr/tidyr/purrr, native pipe |>, R6 classes, tidy evaluation with rlang {{, vctrs custom types, renv dependency management, ggplot2…
Staged learning path for clarc — Day 1 survival commands, Week 1 workflow integration, Month 1 advanced agents. Includes solo, team, and role-specific paths.
Interactive installer for clarc — guides users through selecting and installing skills and rules to user-level or project-level directories, verifies paths, and optionally…
C++ coding standards (C++ Core Guidelines). Core rules for philosophy, interfaces, functions, classes, resource management, error handling, and immutability.
GraphQL API patterns: schema-first design, resolvers, DataLoader for N+1 prevention, subscriptions, error handling, pagination, auth, and performance.
DuckDB patterns for embedded OLAP analytics: in-process SQL on Parquet/CSV/JSON files, window functions, ASOF joins, dbt-duckdb integration, Dagster assets, Python/Node.js APIs,…
MLOps lifecycle patterns — experiment tracking (MLflow/W&B), model registry, FastAPI serving with canary deployments, drift detection, fine-tuning workflows, retraining pipelines,…
NoSQL database patterns: MongoDB document design (embedding vs. referencing), DynamoDB single-table design with access patterns, Redis as primary store, and when to use each NoSQL…
Advanced Rust patterns — zero-cost abstractions, proc macros, unsafe FFI, WASM, Axum web architecture, trait objects vs generics, and performance profiling.
Advanced TypeScript — mapped types, template literal types, conditional types, infer, type guards, decorators, async patterns, testing with Vitest/Jest, and performance.
Domain-Driven Design tactical patterns for Java 25+. Value Objects, Entities, Aggregates, Domain Services, Domain Events, Ubiquitous Language, and Bounded Contexts.
Brand identity development: color palette construction (primary/secondary/semantic/neutral), logo concept brief writing, typeface pairings, brand voice definition, mood board…
Illustration style definition for digital products: style brief writing (flat, isometric, line art, 3D, abstract), consistency rules for multi-illustrator teams, SVG illustration…
Advanced Hexagonal Architecture anti-patterns for TypeScript — domain importing framework dependencies, use cases depending on concrete adapters, HTTP handlers bypassing use…
Decision framework for resolving conflicts between clarc agents — priority hierarchy, conflict classes, escalation protocol, and real-world examples
Data & product analytics workflow: event taxonomy design, instrumentation (Segment, PostHog, Mixpanel, Amplitude, GA4), analytics pipelines, funnel and retention analysis, and…
Mobile CI/CD patterns — iOS/Android builds in CI (GitHub Actions/Fastlane), code signing for TestFlight/App Store, automated versioning, screenshot testing, Firebase App…
GenServer, Supervisors, OTP patterns, Phoenix contexts, LiveView lifecycle, and Broadway for Elixir/Phoenix applications.
Contract-First API design — write OpenAPI 3.1 or AsyncAPI 3.0 specs before implementation, generate or validate code against them, detect breaking changes in CI, and apply…
Real-time communication patterns: WebSocket with reconnection and presence, Server-Sent Events (SSE) for one-way streaming, long polling fallback, room-based pub/sub, connection…
Write CFP (Call for Papers/Proposals) abstracts and speaker bios that get accepted. Covers hook sentences, problem framing, audience-fit statements, concrete takeaways, and…
C programming patterns (C11/C17): opaque pointer encapsulation, error handling via return codes and out-parameters, resource cleanup with goto, memory management discipline…
Marketing asset design for developers: Open Graph / social media card specs and HTML generation, email template HTML/CSS patterns (table-based layout, Outlook compatibility, dark…
RFC 7807 / RFC 9457 Problem Details for HTTP APIs — standard error response format, Content-Type application/problem+json, extension fields, and per-language implementation…
Local development environment patterns: runtime version pinning with mise/asdf, environment variables with direnv, Dev Containers for consistent team environments, Docker Compose…
AI-assisted design workflows: prompt engineering for image generation (Midjourney, DALL-E 3, Stable Diffusion, Flux), achieving style consistency across a generated asset set,…
Wireframing and prototyping workflow: fidelity levels (lo-fi sketch → mid-fi wireframe → hi-fi prototype), tool selection (Figma, Excalidraw, Balsamiq), user flow diagrams,…
Advanced API contract patterns — AsyncAPI 3.0 for event-driven systems and Consumer-Driven Contract Testing with Pact. Use after the core Contract-First workflow in api-contract.
Ruby and Rails development patterns: blocks, metaprogramming, ActiveRecord, Sidekiq, RSpec, Sorbet/RBS, Hanami, Roda, Rack middleware.
Full product development lifecycle from raw idea to shipped implementation. Covers idea capture, evaluation (Go/No-Go), solution design (ADR), PRD writing, and handoff to the…
Verification loop for FastAPI projects: type checking, linting, tests with coverage, security scans, and API schema validation before release or PR.
Team Workflow OS — shared clarc setup for engineering teams. Covers shared rules distribution, private skill packs, team sync patterns, onboarding, and multi-developer conventions.
Advanced Swift patterns — property wrappers, result builders, Combine basics, opaque & existential types, macro system, advanced generics, and performance optimization.
Motion and animation patterns for web: CSS transitions for simple interactions, Framer Motion for complex orchestrated animations, meaningful vs.
Patterns for using clarc MCP server in multi-agent workflows, CI pipelines, and external tools
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