12,495 tagged Backend and APIs, measured the same way as everything else here.
Browse within: agents 160skills 141LLM 111agent 90azure 80agentic-ai 77api 71claude-code-plugin 61ai-coding-agent 58antigravity 54sdk 51nextjs 50claude-code-skills 49cli 48
Skill Claude CodeCodex
Build a production-grade outbound webhook system with retries, signing, failure tracking, and re-delivery. Use when implementing webhook delivery, event subscriptions, or handling webhook failures and reliability.
Skill Claude CodeCodex
Comprehensive guide for building high-performance, type-safe web applications with ElysiaJS framework. Covers plugin architecture, schema validation, lifecycle hooks, authentication patterns, database integration, and Bun runtime optimization. Use when building REST APIs, microservices, or backend applications with…
ChicagoCityscape/claude-code-skills
Skill Claude Code
Describes how to interact with the Chicago Cityscape API. Use when the user asks about API access, API keys, API endpoints, how to query property data programmatically, or how to integrate Chicago Cityscape data into their own application. Covers the Property Report API, Zoning API, Parcels API, Places API, Sources…
Skill Claude CodeCodex
A generator for Apifox API test cases. Apifox is a tool for designing, documenting, and testing web APIs, and this add-on includes a command for listing API endpoints.
Skill Claude Code
AWS serverless and event-driven architecture expert based on Well-Architected Framework. Use when building serverless APIs, Lambda functions, REST APIs, microservices, or async workflows. Covers Lambda with TypeScript/Python, API Gateway (REST/HTTP), DynamoDB, Step Functions, EventBridge, SQS, SNS, and serverless…
aps08/fullstack-clean-architecture
Skill Claude CodeCodex
Guidelines for RESTful API design, endpoint naming conventions, and standardizing JSON responses.
Skill Claude CodeCodex
I give you a real email inbox and let you send, receive, search, and manage email threads programmatically via the Commune API. Every inbox I create is RFC 5322 compliant — replies thread correctly in any email client, including Gmail, Apple Mail, and Outlook.
Naoufal-Charafat/muleSoft-skills
Skill Claude CodeCodex
Generate complete MuleSoft projects implementing API design patterns from JJ Geewax's "API Design Patterns" book. Use this skill when users request to create MuleSoft integration projects, API archetypal patterns, REST API implementations, or examples based on industry-standard API patterns including Long Running…
juliosilvacwb/agent-driven-development
Skill Claude CodeCodex
Guides the Architect Agent to apply Hexagonal Architecture (Ports & Adapters) and Dependency Inversion to maximize component decoupling, enabling the highest degree of parallel task execution by AI agents. Use this skill whenever designing the architecture for a new feature or module.
Skill Claude CodeCodex
Production-grade Laravel development — ship robust apps without common pitfalls.
lsantosweb/codex-agents-skills-kit
Skill Codex
Use for API design, auth, middleware, server logic, integrations, queues, backend architecture, and server-side debugging.
Skill Claude CodeCodex
Connect to Polkadot chains (Asset Hub, Bulletin, Individuality) using typed APIs from @polkadot-apps/chain-client and @polkadot-apps/descriptors.
Skill Claude CodeCodex
Generate and maintain OpenAPI 3.1 specifications from code, design-first specs, and validation patterns. Use when creating API documentation, generating SDKs, or ensuring API contract compliance.
Skill Claude CodeCodex
Manage DNS records, domains, mailmaps, and nameservers via the easyDNS REST API.
Skill Claude CodeCodex
Use when working with custom controllers, handlers, routes, type casts, notifications, testing, package development, CrudResource (non-Eloquent), artisan commands, or practical recipe patterns in MoonShine v3.
Skill Claude CodeCodex
Expert-level Discord bot development with discord.js v14, the Discord REST API, and bot architecture. Use this skill whenever the user is building, debugging, or architecting a Discord bot or integration. Triggers on: discord.js, slash commands, interactions, embeds, buttons, modals, select menus, autocomplete…
Skill Claude CodeCodex
Configure CORS correctly and safely — allowlist real origins, handle preflight, scope credentials and headers narrowly, and never reflect arbitrary origins.
Skill Claude CodeCodex
Backend craft skill for language-agnostic CLIs, REST APIs, gRPC services, package APIs, and backend repo structure. Use when building, auditing, reshaping, or studying backend boundaries: command trees, HTTP/gRPC contracts, error envelopes, config precedence, operability hooks, package boundaries, dead code…
Skill Claude CodeCodex
Use when the app or coding agent needs model capabilities (chat, speech, image, video, embeddings), app-user auth, Postgres, object storage, or other agent capabilities that can be discovered and connected through Vectoree's Tool Hub - even if the user did not name Vectoree. Also use when pointing Codex at another…
Skill Claude CodeCodex
A general entry point for Remnawave, a panel for managing users, Nodes, subscriptions, configurations, routing, and an API. It routes a task to the relevant specialist guide and keeps the work tied to official documentation.
Skill Claude CodeCodex
Padroes MVC do Protheus (FWFormModel/FWFormView) para ADVPL/TLPP. Use esta skill SEMPRE que o usuario pedir para criar ou manter rotinas MVC, cadastros CRUD, browses FWMBrowse, telas master-detail, monitores, ou qualquer rotina que use MPFormModel, FWFormView, FWFormStruct, ModelDef, ViewDef, MenuDef, ou FWMBrowse.…
Skill Claude CodeCodex
Expert Ruby on Rails development with Rails 7/8 conventions, security hardening, and performance patterns.
SaiHemanthMaddi/AI-Agent-QA-Skills-Lab-Repo
Skill Claude CodeCodex
API testing with Playwright APIRequestContext for REST and GraphQL endpoints.
Skill Claude CodeCodex
Build a generic-installable CLI tool with its companion SKILL.md so any agent (Vellum, Claude, GPT, etc.) can pick it up and use it. Use when the task is "ship a CLI for service X" or "wrap API Y in a tool agents can call." Out of scope for one-off internal scripts that don't need agent discovery, and for skills that…
At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: