Backend & APIs · For developers

Guides the design and implementation of Model Context Protocol servers in TypeScript or Python, from tool naming and error messages to evaluation.

anthropics/skills

A skill your agent uses whenever the user mentions Horizon by name in a Laravel context.

coollabsio/coolify

NestJS best practices and architecture patterns for building production-ready applications.

rolling-scopes/rsschool-app

Manages a Sub2API deployment from the command line: accounts, redeem and invitation codes, groups, proxies, imports, exports and raw admin API calls.

Wei-Shaw/sub2api

Gets Firecrawl working in a project: signs you in through the browser, saves FIRECRAWL_API_KEY to .env and picks the first SDK or REST path.

firecrawl/firecrawl

Walks through building MCP servers in Python or TypeScript that expose tools, resources and prompts to Claude, with templates, registration and testing.

shareAI-lab/learn-claude-code

Create and edit Obsidian Bases (.base files) with views, filters, formulas, and summaries.

Atmosphere/atmosphere

You MUST use this before any creative work - creating features, building components, adding functionality, or modifying behavior.

xpinjection/test-driven-spring-boot

Explains how to bundle Model Context Protocol servers in a Claude Code plugin, covering config files, stdio, SSE, HTTP and WebSocket server types, and authentication.

anthropics/claude-plugins-official

ACTIVATE when the user works on authentication in Laravel. An agent skill from coollabsio/coolify.

coollabsio/coolify

A skill your agent uses for Laravel MCP development. An agent skill from coollabsio/coolify.

coollabsio/coolify

Adds Firecrawl's /scrape endpoint to application code to pull markdown, HTML, links, screenshots or structured data from a single known URL.

firecrawl/firecrawl

Adds web search, scraping, structured extraction and browser interaction to application code using Firecrawl's scrape, search and interact endpoints.

firecrawl/firecrawl

A skill your agent uses when creating new agent skills or improving existing ones - ensures skills are discoverable, scannable, and effective through proper structure, discovery optimization, and…

NangoHQ/nango

Turns an API description, such as an OpenAPI file or a Postman collection, into a connector plugin for ToolJet's marketplace and checks it with the repo's validator.

ToolJet/ToolJet

General Supabase skill for database, auth, Edge Functions, Realtime and storage work, plus client libraries, migrations, security audits, debugging and reading logs.

supabase/agent-skills

Reviews backend code under api/ for concrete, reproducible defects, routes to rule packs for architecture, schema, repositories and SQLAlchemy, and ranks findings from P0 to P3.

langgenius/dify

A skill your agent uses when implementing or debugging ANY network request, API call, or data fetching.

CherryHQ/cherry-studio-app

Find, evaluate, and download common purchasable CAD parts from step.parts, including named off-the-shelf actuators, servos, motors, electronics boards, connectors, screws, bolts, nuts, washers…

earthtojake/text-to-cad

Guides adding Firecrawl's /interact endpoint to product code for pages that need clicks, forms, pagination or logged-in flows beyond plain scraping.

firecrawl/firecrawl

Sets layered architecture and coding rules for Node.js, Express and TypeScript microservices, covering routes, controllers, services, repositories, Prisma, Sentry and Zod.

diet103/claude-code-infrastructure-showcase

Designs REST and GraphQL APIs from resource modeling to an OpenAPI 3.1 contract, with versioning, pagination and RFC 7807 error handling.

Jeffallan/claude-skills

Drives headless Chrome through Cloudflare Browser Rendering over a CDP WebSocket to take screenshots, navigate and scrape pages, and record multi-page videos.

cloudflare/moltworker

Apply this skill whenever writing, reviewing, or refactoring Laravel PHP code.

anonaddy/anonaddy

Set up, repair, or migrate to Cloudflare Turnstile bot verification in an existing frontend and backend, including server-side Siteverify.

cloudflare/skills

Guidance for adding Firecrawl's /search endpoint to product code and agent workflows when a feature starts from a query rather than a URL.

firecrawl/firecrawl

Guides changes to an existing Twenty app: adding or editing objects, layouts, logic functions and front components, with a plan stated before multi-entity edits.

twentyhq/twenty

Comprehensive guide for implementing NetworkPolicy, PodSecurityPolicy, RBAC, and Pod Security Standards in Kubernetes.

Cybereason-Public/owLSM

Interact with Obsidian vaults using the Obsidian CLI to read, create, search, and manage notes, tasks, properties, and more.

Atmosphere/atmosphere

Build, refactor, and troubleshoot Laravel Actions using lorisleiva/laravel-actions.

coollabsio/coolify

Interact with the Paperclip control plane API for task coordination and governance.

paperclipai/paperclip

Build production-ready Node.js backend services with Express/Fastify, implementing middleware patterns, error handling, authentication, database integration, and API design best practices.

ever-works/ever-works

This skill should be used when the user is writing Go code and needs guidance on Go-specific pedantry: error wrapping with fmt.Errorf and %w, interface design (accept interfaces return structs)…

chromedp/chromedp

Enforces that every error in a service is captured to Sentry v8, with patterns for controllers, routes, cron jobs and database performance spans instead of console logging alone.

diet103/claude-code-infrastructure-showcase

Execute read-only Ruby/Rails commands against Gumroad's production database for debugging and investigation.

antiwork/gumroad

Turns an OpenAPI or Swagger spec into an MCP server with the mcp-use TypeScript SDK, mapping each operation to a tool, wiring auth, testing and deploying.

mcp-use/mcp-use

Sets the backend TypeScript and Cloud VM rules for cmux: Effect-based services, thin route handlers, Postgres as source of truth, migrations and provider secrets.

manaflow-ai/cmux

A skill your agent uses when adding authentication, handling user input, working with secrets, creating API endpoints, or implementing payment/sensitive features.

jewbetcha/opentrace

A skill your agent uses when the user mentions Yaak, a Yaak workspace, or the yaak command, or asks to call, hit, or smoke test HTTP/REST endpoints, save or organize API requests for reuse or manual…

mountain-loop/yaak

Reference help for the CCXT library covering crypto exchange APIs, market data, trading and order management across 150+ exchanges in JavaScript, Python and PHP.

2025Emma/vibe-coding-cn

A skill your agent uses when working with Payload projects (payload.config.ts, collections, fields, hooks, access control, Payload API).

payloadcms/payload

Read and update global application settings: system prompts, thinking budget, IP filters, payload rules, combo defaults, and require-login…

diegosouzapw/OmniRoute

A skill your agent uses to analyze how a Laravel application is actually written and record its conventions as shared rules.

anonaddy/anonaddy

Configure Better Auth server and client, set up database adapters, manage sessions, add plugins, and handle environment variables.

latitude-dev/latitude-llm

Guides building, debugging and testing LangBot plugins: components, SDK calls, README and locale rules, SDK pitfalls and WebSocket-based testing.

langbot-app/LangBot

AI hotspot monitoring and trending topic discovery across multiple sources (Bing, Google, DuckDuckGo, HackerNews, Sogou, Bilibili, Weibo, Twitter).

liyupi/yupi-hot-monitor

Gmail, Calendar, Drive, Docs, Sheets via gws CLI or Python. An agent skill from NousResearch/hermes-agent.

NousResearch/hermes-agent

Covers building subscription billing: billing cycles, subscription states, invoice generation, proration, tax handling and dunning for failed payments.

wshobson/agents