The 2025 skills index, migrated from flexappdev.com. 34 skills across 8 categories.
For the 2026 agent-first list, see Skills.
Async, typing, packaging, FastAPI.
Strict mode, generics, type narrowing.
App Router, RSC, server actions, edge runtime.
Hooks, suspense, transitions, server components.
v4 tokens, dark mode, brand accents.
Composable primitives + CVA pattern.
TypeScript-first schema validation — parse, don't validate.
Copy-paste accessible primitives — own the components, not a dep.
Core Web Vitals — LCP, INP, CLS — and how to actually move them.
Pydantic v2, dependency injection, OpenAPI.
Schema-first APIs, fragments, DataLoader, subscriptions.
TypeScript ORMs with type-safe query builders and migrations.
End-to-end type safety from server to client — no code generation.
Payments, subscriptions, invoices — the de-facto SaaS billing layer.
Email API + React Email — modern transactional email.
In-memory store — cache, queue, rate-limit, pub/sub.
Aggregation, indexes, change streams.
Postgres + RLS + auth + storage.
In-memory data store — caching, pub/sub, sorted sets, streams.
Multi-stage builds, compose, slim images.
Edge functions, ISR, preview deploys.
Container orchestration — Deployments, Services, HPA, Helm.
IaC — declarative infra across AWS, GCP, Vercel, Supabase.
CI/CD inside the repo — YAML workflows, reusable actions, matrix builds.
Serverless compute and object storage — event-driven at scale.
Workflow CI — tests, builds, deploys, schedule.
Workers, R2, D1, Pages, KV — edge compute + storage.
E2E, screenshots, multi-browser.
JavaScript unit testing — mocks, snapshots, coverage, jsdom.
Jest-compatible test runner built on Vite — faster, ESM-native.
Cross-browser E2E — Chromium, Firefox, WebKit, mobile emulation.
Programmatic video, React → MP4.
Concat, scale, encode, captions.
Slash skills, hooks, sub-agents, MCP.