Best AI Agent Skills for TypeScript and React Developers (2026)

TypeScript and React are the most popular web development stack, and they're also where SKILL.md skills make the biggest difference. Without skills, agents generate React code that works but doesn't follow modern conventions — class components instead of functions, prop drilling instead of context, any types instead of proper generics.

TypeScript skills

Strict type patterns

The most impactful TypeScript skills enforce strict typing conventions. They prevent the agent from using any, ensure proper use of generics, enforce discriminated unions for complex state, and use const assertions and template literal types where appropriate.

A good TypeScript skill produces code that passes strict mode without escape hatches. It uses branded types for IDs (so you can't accidentally pass a UserId where a PostId is expected), properly types API responses, and uses Zod or similar for runtime validation at boundaries.

Utility type usage

Skills that encode utility type patterns help agents use Pick, Omit, Partial, Required, Record, and custom utility types instead of duplicating type definitions. This keeps the type layer DRY and makes refactoring safer.

React skills

Component patterns

React component skills define how components should be structured: file organization (component, styles, tests, types in one directory or separate), prop interface patterns, compound component patterns, render prop vs hooks decisions, and error boundary placement.

Hooks skills

Custom hooks are where most React codebases accumulate technical debt. A hooks skill ensures proper dependency arrays in useEffect, correct memoization with useMemo and useCallback (including knowing when NOT to memoize), and patterns for custom hooks that handle loading/error/data states.

State management

Skills for state management encode your team's chosen approach: Zustand store patterns, React Query for server state, Context for theme/auth, or Redux Toolkit slices. Consistency across the codebase matters more than which library you pick, and skills enforce that consistency.

Next.js skills

Next.js skills handle the framework's specific patterns: App Router conventions, Server Components vs Client Components decisions, data fetching patterns (server actions, route handlers), middleware usage, and proper metadata API usage for SEO.

These skills are especially valuable because Next.js changes rapidly — the right patterns for App Router differ significantly from Pages Router, and agents trained on older data often generate outdated patterns.

Testing skills

React testing skills encode Testing Library patterns: queries by role instead of test IDs, user-event for interactions, proper async handling with waitFor and findBy, and integration test patterns that test behavior rather than implementation.

Finding TypeScript and React skills

Browse frontend and TypeScript skills on Agensi — filter by the relevant tags to find framework-specific skills. Skills work across Claude Code, Codex CLI, Cursor, and all other compatible agents.