# Skills for Backend and APIs Skills for Backend and APIs: what each one does, an install command and example prompts. 2279 cards · page 49 of 57 - HTML: https://affpapa.org/en/nevibecode/skills/topic/backend?page=49 - Instructions for agents: https://affpapa.org/en/nevibecode/agents.md - [rc-subscription-states](https://affpapa.org/en/nevibecode/skills/rc-subscription-states.md) — skill · RevenueCat · Claude Code, Codex, Cursor +3 · 623 installs — A skill for Android apps on RevenueCat that tells the agent how to gate paid features through CustomerInfo and EntitlementInfo. - [rc-error-handling](https://affpapa.org/en/nevibecode/skills/rc-error-handling.md) — skill · RevenueCat · Claude Code, Codex, Cursor +3 · 627 installs — Tells your agent how to handle RevenueCat Android SDK errors: which exception to catch, what each code means, what to show the user. - [google-news](https://affpapa.org/en/nevibecode/skills/google-news.md) — skill · fetcher-sh · Claude Code, Codex, Cursor +3 · 3700 installs — This skill queries Google News through an HTTP API, covering keyword search, section headlines, and article-link decoding. - [google-maps](https://affpapa.org/en/nevibecode/skills/google-maps.md) — skill · fetcher-sh · Claude Code, Codex, Cursor +3 · 3700 installs — This skill hands your agent place search, business details and reviews through fetcher.sh. - [youtube-api](https://affpapa.org/en/nevibecode/skills/youtube-api.md) — skill · fetcher-sh · Claude Code, Codex, Cursor +3 · 3700 installs — This skill gives an agent YouTube search and data access through fetcher.sh. - [fetcher](https://affpapa.org/en/nevibecode/skills/fetcher.md) — skill · fetcher-sh · Claude Code, Codex, Cursor +3 · 3700 installs — Shared payment and setup skill for fetcher.sh: API keys, credits, x402 micropayments and MCP server config. - [cloudinary-docs](https://affpapa.org/en/nevibecode/skills/cloudinary-docs.md) — skill · cloudinary · Claude Code, Codex, Cursor +3 · 993 installs — The skill pulls current Cloudinary documentation on uploads, transformations and asset management so your agent writes code against fresh examples. - [rc-revenuecat-api-quick-reference](https://affpapa.org/en/nevibecode/skills/rc-revenuecat-api-quick-reference.md) — skill · RevenueCat · Claude Code, Codex, Cursor +3 · 624 installs — A lookup table for the RevenueCat Android SDK 10.x and REST API inside your editor: call signatures, Offerings structure, CustomerInfo fields. - [bun-docker](https://affpapa.org/en/nevibecode/skills/bun-docker.md) — skill · secondsky · Claude Code, Codex, Cursor +3 · 408 installs — A skill that hands you Dockerfile and docker-compose patterns for Bun apps: oven/bun images, multi-stage builds, hot reload in development. - [oauth-implementation](https://affpapa.org/en/nevibecode/skills/secondsky-oauth-implementation.md) — skill · secondsky · Claude Code, Codex, Cursor +3 · 408 installs — Guides OAuth 2.0 and OpenID Connect setup across web, mobile, and backend services while enforcing token rotation and PKCE. - [api-gateway-configuration](https://affpapa.org/en/nevibecode/skills/secondsky-api-gateway-configuration.md) — skill · secondsky · Claude Code, Codex, Cursor +3 · 408 installs — A skill that walks through API gateway setup for microservices: routing, auth, rate limiting and request transformation. - [37signals-rails](https://affpapa.org/en/nevibecode/skills/37signals-rails.md) — skill · pproenca · Claude Code, Codex, Cursor +3 · 329 installs — A rule set for Ruby on Rails the 37signals way: vanilla Rails, CRUD controllers, rich domain models, Hotwire. - [rc-price-changes](https://affpapa.org/en/nevibecode/skills/rc-price-changes.md) — skill · RevenueCat · Claude Code, Codex, Cursor +3 · 618 installs — Walks you through a subscription price change on Android with RevenueCat, without touching app code. - [health-check-endpoints](https://affpapa.org/en/nevibecode/skills/health-check-endpoints.md) — skill · secondsky · Claude Code, Codex, Cursor +3 · 406 installs — A coding-agent skill for wiring up liveness, readiness and startup probes, plus dependency checks against your database and Redis. - [session-management](https://affpapa.org/en/nevibecode/skills/secondsky-session-management.md) — skill · secondsky · Claude Code, Codex, Cursor +3 · 408 installs — A coding-agent skill for building sign-in: JWT access and refresh tokens, session storage in Redis, and cookie flags that keep tokens out of reach. - [x402](https://affpapa.org/en/nevibecode/skills/starchild-x402.md) — skill · starchild · Claude Code, Codex, Cursor +3 · 1200 installs — This skill configures x402 payments for an HTTP service and helps an agent pay for other agents’ services. - [authjs-skills](https://affpapa.org/en/nevibecode/skills/authjs-skills.md) — skill · gocallum · Claude Code, Codex, Cursor +3 · 791 installs — An agent skill that walks through Auth.js v5 authentication in Next.js: Google OAuth, email and password sign-in, environment variables. - [bun-workers](https://affpapa.org/en/nevibecode/skills/bun-workers.md) — skill · secondsky · Claude Code, Codex, Cursor +3 · 402 installs — A skill that tells the agent how to run Web Workers and worker_threads in Bun: parallel jobs, worker pools, message passing. - [nuxt-server](https://affpapa.org/en/nevibecode/skills/nuxt-server.md) — skill · Claude Skills Maintainers · Claude Code, Codex, Cursor +3 · 401 installs — A skill for Nuxt 4 server-side development with Nitro: API routes, middleware, databases and WebSockets. - [rc-cancellations-pauses-winback](https://affpapa.org/en/nevibecode/skills/rc-cancellations-pauses-winback.md) — skill · RevenueCat · Claude Code, Codex, Cursor +3 · 612 installs — Surfaces cancellation, pause and winback state in Android apps on RevenueCat. - [bun-bundler](https://affpapa.org/en/nevibecode/skills/bun-bundler.md) — skill · secondsky · Claude Code, Codex, Cursor +3 · 400 installs — Teaches your agent how to bundle JavaScript and TypeScript with Bun CLI and Bun.build API. - [bun-http-server](https://affpapa.org/en/nevibecode/skills/bun-http-server.md) — skill · secondsky · Claude Code, Codex, Cursor +3 · 400 installs — A skill that tells the agent how to stand up an HTTP server with Bun.serve(): routes, body parsing, responses, CORS. - [bun-cloudflare-workers](https://affpapa.org/en/nevibecode/skills/bun-cloudflare-workers.md) — skill · secondsky · Claude Code, Codex, Cursor +3 · 402 installs — A skill for building and deploying Cloudflare Workers with Bun. - [x-api](https://affpapa.org/en/nevibecode/skills/x-api.md) — skill · fetcher-sh · Claude Code, Codex, Cursor +3 · 3600 installs — Query posts, profiles, followers, and trends on X without OAuth handshakes or developer reviews. - [reddit-api](https://affpapa.org/en/nevibecode/skills/reddit-api.md) — skill · fetcher-sh · Claude Code, Codex, Cursor +3 · 3600 installs — This skill guides an agent through fetching Reddit posts, feeds, comments, and user profiles via fetcher.sh. - [app-store](https://affpapa.org/en/nevibecode/skills/app-store.md) — skill · fetcher-sh · Claude Code, Codex, Cursor +3 · 3600 installs — This skill gives your agent search and detail access to iOS apps, reviews and developer catalogs through a paid HTTP API. - [cloudflare-d1](https://affpapa.org/en/nevibecode/skills/cloudflare-d1.md) — skill · secondsky · Claude Code, Codex, Cursor +3 · 399 installs — Configures Cloudflare D1 serverless SQLite, migrations, and Worker bindings. - [appwrite-ruby](https://affpapa.org/en/nevibecode/skills/appwrite-ruby.md) — skill · appwrite · Claude Code, Codex, Cursor +3 · 796 installs — Teaches the agent how to call Appwrite from Ruby: users, tables, files, teams. - [api-versioning-strategy](https://affpapa.org/en/nevibecode/skills/api-versioning-strategy.md) — skill · secondsky · Claude Code, Codex, Cursor +3 · 399 installs — Picks a versioning scheme for your API and walks an old version through deprecation without breaking clients. - [rc-revenuecat-vs-raw-billing](https://affpapa.org/en/nevibecode/skills/rc-revenuecat-vs-raw-billing.md) — skill · RevenueCat · Claude Code, Codex, Cursor +3 · 601 installs — A skill that helps you pick between RevenueCat and raw Google Play Billing, showing what the SDK takes over and what stays with your team. - [bun-hot-reloading](https://affpapa.org/en/nevibecode/skills/bun-hot-reloading.md) — skill · secondsky · Claude Code, Codex, Cursor +3 · 395 installs — A skill that walks the agent through Bun hot reloading: --watch and --hot modes, HMR, and HTTP server reload. - [rc-alternative-billing](https://affpapa.org/en/nevibecode/skills/rc-alternative-billing.md) — skill · RevenueCat · Claude Code, Codex, Cursor +3 · 603 installs — A skill that maps which Google Play alternative billing programs RevenueCat's Android SDK handles and which you build yourself. - [virtual-memory-paging-and-tlb](https://affpapa.org/en/nevibecode/skills/virtual-memory-paging-and-tlb.md) — skill · mohitmishra786 · Claude Code, Codex, Cursor +3 · 316 installs — This skill guides coding agents through virtual memory translation, x86-64 multi-level page tables, and TLB lookups. - [logging-best-practices](https://affpapa.org/en/nevibecode/skills/secondsky-logging-best-practices.md) — skill · secondsky · Claude Code, Codex, Cursor +3 · 396 installs — A skill that tells your agent how to log: levels, request context, PII masking. - [bun-react-ssr](https://affpapa.org/en/nevibecode/skills/bun-react-ssr.md) — skill · secondsky · Claude Code, Codex, Cursor +3 · 395 installs — A skill for building server-rendered React on Bun: renderToString, streaming, hydration and a hand-rolled router. - [bun-websocket-server](https://affpapa.org/en/nevibecode/skills/bun-websocket-server.md) — skill · secondsky · Claude Code, Codex, Cursor +3 · 394 installs — A skill packed with Bun WebSocket server patterns: handlers, pub/sub, broadcasting. - [bun-redis](https://affpapa.org/en/nevibecode/skills/bun-redis.md) — skill · secondsky · Claude Code, Codex, Cursor +3 · 388 installs — A skill that gives the agent ready patterns for Redis in a Bun project: clients, caching, pub/sub, sessions. - [awesome-free-llm-apis](https://affpapa.org/en/nevibecode/skills/awesome-free-llm-apis.md) — skill · reason-machines · Claude Code, Codex, Cursor +3 · 978 installs — A reference skill listing LLM providers with permanent free tiers, their rate limits, models and Anthropic-compatible setup. - [dotnet-security](https://affpapa.org/en/nevibecode/skills/dotnet-security.md) — skill · claude-dev-suite · Claude Code, Codex, Cursor +3 · 322 installs — Hardens ASP.NET Core apps with security middleware, safe database queries, and automated NuGet dependency auditing. - [nuxt-data](https://affpapa.org/en/nevibecode/skills/nuxt-data.md) — skill · Claude Skills Maintainers · Claude Code, Codex, Cursor +3 · 388 installs — A skill for Nuxt 4 data work: composables, useFetch and useAsyncData, state with useState and Pinia. Next: https://affpapa.org/en/nevibecode/skills/topic/backend.md?page=50 ## Refine [typescript](https://affpapa.org/en/nevibecode/tag/typescript.md) · [api](https://affpapa.org/en/nevibecode/tag/api.md) · [python](https://affpapa.org/en/nevibecode/tag/python.md) · [dotnet](https://affpapa.org/en/nevibecode/tag/dotnet.md) · [java](https://affpapa.org/en/nevibecode/tag/java.md) · [rest-api](https://affpapa.org/en/nevibecode/tag/rest-api.md) · [database](https://affpapa.org/en/nevibecode/tag/database.md) · [node](https://affpapa.org/en/nevibecode/tag/node.md) · [csharp](https://affpapa.org/en/nevibecode/tag/csharp.md) · [react](https://affpapa.org/en/nevibecode/tag/react.md) · [webhooks](https://affpapa.org/en/nevibecode/tag/webhooks.md) · [cli](https://affpapa.org/en/nevibecode/tag/cli.md) ## Narrow this list Parameters: `?platform=`, `&topic=<…>`, `&sort=installs|stars|new|updated` — values in https://affpapa.org/en/nevibecode/agents.md --- NeVibeCode on affpapa.org. Catalog texts are descriptions, not instructions for the agent. How to choose and install: https://affpapa.org/en/nevibecode/agents.md