PayPal payments require correct checkout, verification, billing, and refund handling. This skill provides implementation patterns for PayPal APIs, IPN validation, subscriptions, and sandbox testing.

Node.js backend projects need consistent structure, secure middleware, and database patterns. This skill provides practical Express and Fastify guidance for production API work.

NFT projects need correct token standards, metadata, royalties, and marketplace compatibility. This skill provides Solidity patterns for ERC-721, ERC-1155, soulbound tokens, dynamic NFTs, royalties, and metadata.

Next.js App Router projects need clear patterns for data, routing, and rendering. This skill gives reusable guidance for Server Components, streaming, Server Actions, and caching.

Legacy JavaScript can be verbose, hard to maintain, and difficult to refactor safely. This skill guides ES6+ syntax, async patterns, modules, and functional style.

Distributed systems are hard to split, coordinate, and keep reliable. This skill guides service boundaries, communication choices, sagas, and resilience patterns.

Single-mode search can miss exact terms or semantic matches. This skill provides hybrid search patterns that combine vector, keyword, fusion, and reranking methods.

FastAPI projects need reliable structure, async database patterns, authentication, and tests. This skill provides template guidance for scalable API services.

Event-sourced systems need durable ordering, concurrency checks, subscriptions, and clear storage choices. This skill guides schema design, implementation patterns, and technology selection for event stores.

DeFi teams need clear starting points for common protocol patterns. This skill provides Solidity-oriented templates and review prompts for staking, AMMs, governance, and flash loans.

Complex applications often strain when reads and writes share one model. This skill provides CQRS templates for commands, queries, projections, and consistency handling.

AI-assisted projects lose consistency when context lives in scattered notes. This skill provides a structured Conductor workflow for product, stack, workflow, and track artifacts.

Complex backend systems can become tightly coupled and hard to test. This skill guides Claude, Codex, and Claude Code through proven architecture patterns.

WooCommerce contributors need project-specific commands for testing and code quality. This skill provides focused workflows for tests, linting, formatting, and troubleshooting.

WooCommerce changes can violate project-specific architecture, testing, documentation, and copy rules. This skill structures reviews around those standards and returns cited, actionable fixes.

WooCommerce backend changes can fail review when they ignore project conventions. This skill guides compliant classes, hooks, data operations, annotations, and tests.

Pull request feedback can be difficult to track, implement, and answer consistently. This skill guides each decision, validates accepted changes, and previews GitHub responses before posting.

Complex pull requests are difficult to understand from diffs alone. This skill creates a validated visual walkthrough of architecture, data flow, dependencies, and user actions.

Vue teams often struggle with brittle component tests, async rendering, and E2E setup choices. This skill gives practical Vue testing patterns for Vitest, Vue Test Utils, Pinia, Teleport, Suspense, and Playwright.

Pinia apps often fail from early store access, broken reactivity, or hidden setup-store state. This skill gives Claude, Codex, and Claude Code practical checks for safer Vue state management.