Design

Build automated billing systems for recurring payments, invoicing, subscription lifecycle, and dunning management. Use when implementing subscription billing, automating invoicing, or managing recurring payment systems.

Use for quick self-review of small changes. For comprehensive review or cross-domain changes, dispatch @code-reviewer agent instead.

HTML-first development with CSS-only interactivity patterns. Use when building features that work without JavaScript, using native HTML elements, CSS pseudo-classes, and the View Transitions API.

Analyzes and transforms prompts using 7 research-backed frameworks (CO-STAR, RISEN, RISE-IE, RISE-IX, TIDD-EC, RTF, Chain of Thought, Chain of Density). Provides framework recommendations, asks targeted questions, and structures prompts for maximum effectiveness. Use when users need expert prompt engineering guidance.

SSO integration guidance for fort-nix services. Use when adding authentication to a service, choosing an SSO mode, configuring oauth2-proxy, or troubleshooting auth issues.

Discovers all Claude Code agents in the system including built-in, plugin, project, and user-level agents. Use when you need to find which agents are available, understand the agent ecosystem, or prepare agents for Actoris registration.

Comprehensive SaaS architecture planner for Next.js and Supabase applications. Converts ideas into production-ready technical plans with database schemas, file structures, feature breakdowns, and week-by-week development roadmaps. Use when planning subscription-based applications, multi-tenant SaaS products, or building from idea to launch with Next.js and Supabase stack.

Generates .prettierignore to exclude build outputs, dependencies, and generated files from Prettier formatting. Prevents formatting of dist/, node_modules/, and coverage/ directories.

Create GitHub Issues for client deliverables in DaveX2001/deliverable-tracking repo (discovery: requirements-clarity). Evaluate at requirements-clarity when user mentions tracking, deliverables, commitments, or "create deliverable". Extracts What/Why/Done from conversation context, prompts for missing info via AskUserQuestion, applies dynamic client labels.

Implement approved plans into production-ready code. Use when user wants to build, implement, code, or execute an approved plan. Activates when user says 'let's build', 'implement this', 'start coding', or 'execute the plan'.

Build stablecoin-first dapps on Tempo (TIP-20 payments, memos, fee tokens, sponsorship, batching, TIP-403 compliance, and stablecoin DEX).

Create React dialog components with forms for the dealflow-network project using Radix UI, tRPC mutations, and proper state management. Use when adding create/edit dialogs, modals, or form-based UI components.

Guide systematic debugging through hypothesis generation and verification

Build checkout and payment experiences using Primer's web components. Use this skill when implementing payment flows, checkout pages, card forms, or integrating Primer SDK into React, Next.js, or vanilla JavaScript applications. Covers component usage, React integration patterns, stable object references, event handling, SSR support, and CSS theming.

Configure pgvector extension for vector search in Supabase - includes embedding storage, HNSW/IVFFlat indexes, hybrid search setup, and AI-optimized query patterns. Use when setting up vector search, building RAG systems, configuring semantic search, creating embedding storage, or when user mentions pgvector, vector database, embeddings, semantic search, or hybrid search.

Master Python asyncio, concurrent programming, and async/await patterns for high-performance applications. Use when building async APIs, concurrent systems, or I/O-bound applications requiring non-blocking operations.

Use the VSCode CLI to open files at specific line and column positions when explaining code, debugging, pointing to TODOs, or guiding users to specific locations in files. Automatically invoked when Claude needs to show users exactly where in a file to look.

Use for complex problems requiring systematic step-by-step reasoning with ability to revise thoughts, branch into alternative approaches, or dynamically adjust scope. Not for simple queries or single-step tasks.

TypeScript utility types and type-safe API design patterns. Use when designing type systems, creating utility types, or implementing type-safe patterns.

TDD (Test-Driven Development) skill with Mockito for Spring Boot.Guides the Red-Green-Refactor cycle for writing tests first.