Testing & Debugging for Claude Code

API rules and filter expressions for PocketBase access control. Use when setting permissions, writing filter expressions, configuring who can access what, or debugging 403/404 responses. Covers all 5 rule types, filter syntax, operators, request/collection macros, and field modifiers.

Expert Power BI performance optimization guidance for troubleshooting, monitoring, and improving the performance of Power BI models, reports, and queries.

PowerShell Windows patterns. Critical pitfalls, operator syntax, error handling.

Prepare and validate release packages with comprehensive testing, documentation, and automation

Provide principal-level software engineering guidance with focus on engineering excellence, technical leadership, and pragmatic implementation.

Prisma ORM expert for schema design, migrations, query optimization, relations modeling, and database operations. Use PROACTIVELY for Prisma schema issues, migration problems, query performance, relation design, or database connection issues.

Autonomously deep-scan entire codebase line-by-line, understand architecture and patterns, then systematically transform it to production-grade, corporate-level professional quality with optimizations

Analyze overall project health and generate comprehensive metrics report

Use this agent when you need to design, optimize, test, or evaluate prompts for Claude (or other LLMs) in production systems. Specifically:\n\n<example>\nContext: You're building a customer support chatbot and need to create high-quality prompts that balance accuracy, cost, and response speed.\nuser: \"I need to optimize prompts for our support bot. We're getting 82% accuracy now, but we want to reach 95% and reduce token usage by at least 30%.\"\nassistant: \"I'll help you design and optimize y

Expert guide on prompt engineering patterns, best practices, and optimization techniques. Use when user wants to improve prompts, learn prompting strategies, or debug agent behavior.

Comprehensive healthcare AI toolkit for developing, testing, and deploying machine learning models with clinical data. This skill should be used when working with electronic health records (EHR), clinical prediction tasks (mortality, readmission, drug recommendation), medical coding systems (ICD, NDC, ATC), physiological signals (EEG, ECG), healthcare datasets (MIMIC-III/IV, eICU, OMOP), or implementing deep learning models for healthcare applications (RETAIN, SafeDrug, Transformer, GNN).

Expert assistant for developing Model Context Protocol (MCP) servers in Python

Use this agent when you need to build type-safe, production-ready Python code for web APIs, system utilities, or complex applications requiring modern async patterns and extensive type coverage. Specifically:\\n\\n<example>\\nContext: Building a new REST API service that needs strict type safety, async database access, and comprehensive test coverage.\\nuser: \"I need to create a FastAPI service with SQLAlchemy async ORM, Pydantic validation, and 90%+ test coverage. Can you help?\"\\nassistant:

Master Python 3.12+ with modern features, async programming, performance optimization, and production-ready practices. Expert in the latest Python ecosystem including uv, ruff, pydantic, and FastAPI.

Provides guidance for performing causal interventions on PyTorch models using pyvene's declarative intervention framework. Use when conducting causal tracing, activation patching, interchange intervention training, or testing causal hypotheses about model behavior.

Use this agent when you need comprehensive quality assurance strategy, test planning across the entire development cycle, or quality metrics analysis to improve overall software quality. Specifically:\\n\\n<example>\\nContext: A development team is about to start a critical 6-month feature development and needs a complete QA strategy before coding begins.\\nuser: \"We need a comprehensive QA strategy for our upcoming project. What should our testing approach be for a complex e-commerce platform?

Generate comprehensive test plans, manual test cases, regression test suites, and bug reports for QA engineers. Includes Figma MCP integration for design validation.

Manage Railway deployments - view logs, redeploy, restart, or remove deployments. Use for deployment lifecycle (remove, stop, redeploy, restart), deployment visibility (list, status, history), and troubleshooting (logs, errors, failures, crashes). NOT for deleting services - use railway-environment skill with isDeleted for that.

Query resource usage metrics for Railway services. Use when user asks about resource usage, CPU, memory, network, disk, or service performance like "how much memory is my service using" or "is my service slow".

Comprehensive React and Next.js performance optimization guide with 40+ rules for eliminating waterfalls, optimizing bundles, and improving rendering. Use when optimizing React apps, reviewing performance, or refactoring components.

Diagnose slow React components and suggest targeted performance fixes.

Use when optimizing existing React applications for performance, implementing advanced React 18+ features, or solving complex state management and architectural challenges within React codebases. Specifically:\n\n<example>\nContext: Production React app experiencing performance degradation with 8 custom hooks per component, large bundle size, and memory leaks\nuser: \"Our React dashboard is slow. Components re-render constantly, bundle is 850KB, and we have memory issues. Using 8 custom hooks in

React useEffect best practices from official docs. Use when writing/reviewing useEffect, useState for derived values, data fetching, or state synchronization. Teaches when NOT to use Effect and better alternatives.

Review who attended a Google Meet conference and for how long.

This skill should be used when the user asks to "follow red team methodology", "perform bug bounty hunting", "automate reconnaissance", "hunt for XSS vulnerabilities", "enumerate subdomains", or needs security researcher techniques and tool configurations from top bug bounty hunters.

Red team tactics principles based on MITRE ATT&CK. Attack phases, detection evasion, reporting.

Intelligently Refactor and Improve Code Quality

An uncompromising Academic Research Engineer. Operates with absolute scientific rigor, objective criticism, and zero flair. Focuses on theoretical correctness, formal verification, and optimal implementation across any required technology.

Systematically research and validate technical spike documents through exhaustive investigation and controlled experimentation.

| Experienced SRE specialist for production incident response using Rootly incident management platform. INVOKE THIS SKILL when: - User asks to investigate, analyze, or respond to a production incident - User mentions incident IDs, outages, or system failures - User needs help with on-call handoffs or incident coordination - User wants to find solutions based on historical incident data - Keywords: "incident", "outage", "production issue", "on-call", "sev-1", "postmortem" CAPABILITIES: Analyzes

Expert assistant for Rust MCP server development using the rmcp SDK with tokio async runtime

Write idiomatic Rust with ownership patterns, lifetimes, and trait implementations. Masters async/await, safe concurrency, and zero-cost abstractions. Use PROACTIVELY for Rust memory safety, performance optimization, or systems programming.

Single-cell RNA-seq analysis. Load .h5ad/10X data, QC, normalization, PCA/UMAP/t-SNE, Leiden clustering, marker genes, cell type annotation, trajectory, for scRNA-seq analysis.

DevOps specialist for CI/CD pipelines, deployment debugging, and GitOps workflows focused on making deployments boring and reliable

Comprehensive QA and testing skill for quality assurance, test automation, and testing strategies for ReactJS, NextJS, NodeJS applications. Includes test suite generation, coverage analysis, E2E testing setup, and quality metrics. Use when designing test strategies, writing test cases, implementing test automation, performing manual testing, or analyzing test coverage.

Setup comprehensive CI/CD pipeline with automated testing, deployment, and monitoring

Setup complete testing infrastructure with framework configuration and CI integration

Configure comprehensive code linting and quality analysis tools with automated enforcement