A comprehensive security review skill that provides checklists and code examples for secure coding practices. It covers secrets management, input validation, SQL injection prevention, XSS/CSRF protection, authentication, rate limiting, cloud IAM, logging, CI/CD pipeline security, and disaster recovery. This is purely educational documentation with no executable code.

A project-specific documentation skill that provides architecture overview, file structure guidance, code patterns for FastAPI and Next.js, testing requirements, and deployment workflows. It serves as a reference template for developers working on similar tech stacks with Supabase, Claude AI integration, and Google Cloud Run deployment.

A reference skill providing PostgreSQL best practices covering query optimization, schema design, indexing strategies, Row Level Security, and connection pooling. Based on Supabase guidelines, it serves as a quick lookup for common patterns like composite indexes, cursor pagination, and queue processing.

This skill provides a conceptual framework for progressively refining context retrieval in multi-agent workflows. It describes a 4-phase DISPATCH-EVALUATE-REFINE-LOOP pattern to solve the 'subagent context problem' where agents don't know what context they need until they start working.

A comprehensive guide for Go testing that covers table-driven tests, subtests, benchmarks, fuzzing, and test coverage. Follows TDD (Test-Driven Development) methodology with idiomatic Go practices and includes examples for mocking, HTTP handler testing, and CI/CD integration.

A comprehensive reference guide for Go (Golang) development that covers idiomatic patterns, error handling, concurrency, interface design, package organization, and performance optimization. It serves as a best practices companion when writing, reviewing, or refactoring Go code.

A comprehensive reference guide for modern frontend development with React and Next.js. Covers component composition patterns, custom hooks, state management with Context/Reducer, performance optimization techniques (memoization, code splitting, virtualization), form handling, error boundaries, animations with Framer Motion, and accessibility patterns for keyboard navigation and focus management.

Eval Harness provides a formal evaluation framework for Claude Code sessions, implementing eval-driven development (EDD) principles. It helps define expected behaviors before implementation, run evals continuously during development, and track pass/fail metrics for both capability and regression tests.

This skill runs as a Stop hook at the end of Claude Code sessions to analyze conversation transcripts and extract reusable patterns. It identifies error resolutions, debugging techniques, workarounds, and project-specific conventions, saving them as learned skills for future reference.

Continuous Learning v2 is an advanced learning system that observes your Claude Code sessions through hooks, capturing tool usage patterns. It creates atomic 'instincts' with confidence scoring that can evolve into reusable skills, commands, and agents. The system learns your preferences and workflows to make Claude more personalized over time.

This skill provides comprehensive coding standards and best practices for TypeScript, JavaScript, React, and Node.js development. It covers principles like KISS, DRY, and YAGNI, along with practical guidance on variable naming, error handling, async patterns, React components, API design, and testing standards.

A comprehensive reference guide for ClickHouse database development. Provides SQL patterns for table design (MergeTree engines), query optimization techniques, data insertion patterns, materialized views, and common analytics queries including time series analysis, funnel analysis, and cohort analysis.

A reference guide for backend development patterns including RESTful API design, repository and service layer patterns, database query optimization, caching strategies, authentication/authorization, rate limiting, and error handling. Contains TypeScript code examples for Node.js and Next.js applications.

Suite of tools for creating elaborate, multi-component claude.ai HTML artifacts using modern frontend web technologies (React, Tailwind CSS, shadcn/ui). Use for complex artifacts requiring state management, routing, or shadcn/ui components - not for simple single-file HTML/JSX artifacts.

Knowledge and utilities for creating animated GIFs optimized for Slack. Provides constraints, validation tools, and animation concepts. Use when users request animated GIFs for Slack like "make me a GIF of X doing Y for Slack."

A set of resources to help me write all kinds of internal communications, using the formats that my company likes to use. Claude should use this skill whenever asked to write some sort of internal communications (status reports, leadership updates, 3P updates, company newsletters, FAQs, incident reports, project updates, etc.).

Guide users through a structured workflow for co-authoring documentation. Use when user wants to write documentation, proposals, technical specs, decision docs, or similar structured content. This workflow helps users efficiently transfer context, refine content through iteration, and verify the doc works for readers. Trigger when user mentions writing docs, creating proposals, drafting specs, or similar documentation tasks.

Applies Anthropic's official brand colors and typography to any sort of artifact that may benefit from having Anthropic's look-and-feel. Use it when brand colors or style guidelines, visual formatting, or company design standards apply.

Creating algorithmic art using p5.js with seeded randomness and interactive parameter exploration. Use this when users request creating art using code, generative art, algorithmic art, flow fields, or particle systems. Create original algorithmic art rather than copying existing artists' work to avoid copyright violations.

This skill applies consistent corporate branding and styling to all generated documents including colors, fonts, layouts, and messaging

This skill calculates key financial ratios and metrics from financial statement data for investment analysis

Audit an Anthropic Cookbook notebook based on a rubric. Use whenever a notebook review or audit is requested.

This skill provides an advanced financial modeling suite with DCF analysis, sensitivity testing, Monte Carlo simulations, and scenario planning for investment decisions

This skill provides comprehensive guidance for automating changelog generation from commits, PRs, and releases. It covers Conventional Commits conventions, Keep a Changelog format, semantic versioning, and configuration examples for popular tools like semantic-release, standard-version, git-cliff, and commitizen.

A comprehensive guide for building robust backtesting frameworks for trading strategies. Covers common biases (look-ahead, survivorship, overfitting), implementation patterns including event-driven and vectorized backtesters, walk-forward optimization, Monte Carlo analysis, and performance metrics calculation.

This skill provides comprehensive documentation for Go concurrency patterns including goroutines, channels, sync primitives, and context management. It covers worker pools, fan-out/fan-in pipelines, graceful shutdown, error groups, and race detection with production-ready code examples.

Applies the STRIDE methodology (Spoofing, Tampering, Repudiation, Information Disclosure, Denial of Service, Elevation of Privilege) to systematically identify security threats. Provides templates for threat model documents, Python code examples for building automated analysis tools, and guidance for conducting threat modeling sessions.

A comprehensive guide for implementing saga patterns in distributed systems. Provides Python templates for orchestration-based and choreography-based sagas, including order fulfillment workflows, compensation handling, and timeout management.

A comprehensive testing guide for Temporal Python workflows. Covers unit testing with time-skipping, integration testing with mocked activities, replay testing for determinism validation, and local development setup with Docker Compose and pytest configuration.

A comprehensive reference guide for designing durable workflows with Temporal. Covers workflow vs activity separation, saga patterns for distributed transactions, state management, determinism constraints, and best practices for building reliable long-running processes and microservice orchestration.