DevOps

Comprehensive testing and verification checklist for agent-created pull requests. Use when preparing to submit a PR, verifying changes work correctly, or ensuring all evidence requirements are met. Covers Docker setup, database seeding, performance baselines, and proof-of-functionality requirements.

Modern async ORM with type-safe models and efficient queries

Master functional programming principles and patterns including purity, immutability, composition, higher-order functions, algebraic data types, functors, monads, and effect management. Use when working with functional paradigms, pure functions, immutable data structures, function composition, type-safe error handling, or implementing functional patterns like map/filter/reduce, currying, partial application, recursion, lazy evaluation, or referential transparency.

Surface-first hybrid architecture for StickerNest widget and sticker placement in VR/AR. Use when designing spatial placement systems, deciding between XR planes vs custom environments, implementing widget snapping, or understanding how surfaces should be prioritized. Covers Meta Horizon OS and visionOS design patterns, diegetic vs non-diegetic UI, and the room-as-canvas paradigm.

Apply SPARC methodology (Specification, Pseudocode, Architecture, Refinement, Completion) for systematic development. Use for feature development, TDD workflows, and structured problem-solving.

AISC Design Guide 1 expert for steel column base plate and anchor rod connection design. Use when users ask about base connections, base plates, anchor rods, column-to-foundation connections, concrete bearing strength, eccentricity, small vs large moment classification, shear transfer, or AISC Design Guide 1. Supports both LRFD and ASD design methods with 15 worked examples covering axial, moment, shear, and biaxial loading.

Use when cataloging technical debt under time pressure and tempted to explain choices instead of delivering document - enforces execution discipline with scoped delivery patterns for partial catalogs

Automatically sync the documentation structure from docs/content/{en,uk}/ to CLAUDE.md when changes are detected in the docs directory. This skill should be triggered when documentation files are added, removed, or reorganized, or when explicitly requested by the user or agents.

Elixir-specific security patterns, OWASP mitigations, and compliance best practices

Writes software, cloud, and DevOps content in the rigorous style of a formal university technical textbook (expository, objective, and third-person).

Complete guide for OpenAI's traditional/stateless APIs: Chat Completions (GPT-5, GPT-4o), Embeddings, Images (DALL-E 3), Audio (Whisper + TTS), and Moderation. Includes both Node.js SDK and fetch-based approaches for maximum compatibility. Use when: integrating OpenAI APIs, implementing chat completions with GPT-5/GPT-4o, generating text with streaming, using function calling/tools, creating structured outputs with JSON schemas, implementing embeddings for RAG, generating images with DALL-E 3, transcribing audio with Whisper, synthesizing speech with TTS, moderating content, deploying to Cloudflare Workers, or encountering errors like rate limits (429), invalid API keys (401), function calling failures, streaming parse errors, embeddings dimension mismatches, or token limit exceeded. Keywords: openai api, chat completions, gpt-5, gpt-5-mini, gpt-5-nano, gpt-4o, gpt-4-turbo, openai sdk, openai streaming, function calling, structured output, json schema, openai embeddings, text-embedding-3, dall-e-3, image generation, whisper api, openai tts, text-to-speech, moderation api, openai fetch, cloudflare workers openai, openai rate limit, openai 429, reasoning_effort, verbosity

Operacoes e deploy do Sr Cardoso (Cloud Run, Firestore rules/indexes, env vars, scripts, Docker). Use quando configurar ambiente, rodar deploy, revisar infra GCP ou rotinas de setup.

"Is this ACTUALLY verified, or did I just say it is?" - Ralph-wiggum methodology applied to factual accuracy. Use when (1) claims require evidence not assumption, (2) verification must be demonstrable, (3) single-pass investigation insufficient, (4) factual accuracy is critical. Provides the loop logic: iterate until verification thresholds met. Does NOT trigger for: opinions, preferences, how-to instructions, or when user explicitly wants quick answer.

A specialist skill for security reviews, threat modeling, and remediation guidance. Use for auth/permissions changes, secrets or PII handling, public endpoints, or dependency upgrades.

HTTP server, routing, JSON responses and dependencies via layers. Use when wiring endpoints and services.

Follow general development best practices including project structure, documentation, version control, environment configuration, and dependency management. When organizing files and directories in the project. When working on README files, documentation, or project setup. When managing environment variables, configuration files, or secrets. When handling dependencies, package management, or version control. When creating commit messages, pull requests, or managing feature flags. This skill applies to project-wide organizational and process decisions across all types of files.

Enforce clean architecture principles including DRY, YAGNI, KISS, Law of Demeter, and Separation of Concerns. Warns when complexity creeps in and questions unnecessary features. Use when designing architecture, refactoring, code review, or when user mentions architecture, design patterns, complexity, or refactoring.

Create or edit Excalidraw scenes or clipboard payloads by producing valid Excalidraw JSON (type/version/source/elements/appState/files) to render diagrams; use when asked to draw, update, or share Excalidraw diagrams.

Comprehensive context engineering and prompt patterns for AI agents. Covers code review, financial systems, KPI systems, data integration MVP, and modern best practices. Based on 2025 research from Anthropic, LangChain, and industry leaders.

Master MongoDB schema design and data modeling patterns. Learn embedding vs referencing, relationships, normalization, and schema evolution. Use when designing databases, normalizing data, or optimizing queries.