13,244 tagged Backend and APIs, measured the same way as everything else here.
Browse within: LLM 148agents 117skills 114agent 88agentic-ai 85api 80azure 68antigravity 66ai-coding 63claude-code-plugin 61cursor 54cli 53cybersecurity 53javascript 52
Skill Claude CodeCodex
Adds user authentication. Triggers: 'login', 'log in', 'sign in', 'sign up', 'register', 'authentication', 'auth', 'only I can see', 'protect this page', 'private page', 'admin area', 'user accounts', 'members only', 'password protect'.
adryanmoldokkr32-pixel/anthropics-skills
Skill Claude CodeCodex
Build, debug, and optimize Claude API / Anthropic SDK apps. Apps built with this skill should include prompt caching. TRIGGER when: code imports anthropic/@anthropic-ai/sdk; user asks to use the Claude API, Anthropic SDKs, or Managed Agents (/v1/agents, /v1/sessions, /v1/environments). DO NOT TRIGGER when: code…
Skill Claude CodeCodex
Design and review intuitive, scalable, maintainable HTTP APIs. Use this skill whenever the user wants to design a new REST API, review an existing API or spec, write OpenAPI 3.x definitions, or work with HTTP semantics (GET/POST/PUT/PATCH/DELETE), status codes, idempotency (Idempotency-Key), error envelopes (RFC 7807…
Skill Claude Code
Design and review Rails applications using layered architecture principles from "Layered Design for Ruby on Rails Applications". Use when analyzing Rails codebases, reviewing PRs for architecture violations, planning feature implementations, or implementing patterns like authorization, view components, or AI…
Skill Claude CodeCodex
Design and implement authentication and authorization systems. Use when setting up user login, JWT tokens, OAuth, session management, or role-based access control. Handles password security, token management, SSO integration.
Skill Claude CodeCodex
A guide for adding JWT authentication to a Spring Boot application. JWT is a signed token used to identify a user between requests, while role-based access control limits what different users may do.
AyrtonAldayr/agent-skill-java-spring-framework
Skill Claude CodeCodex
Senior Java & Spring Boot 4 / Spring Framework 7 architect skill for 2026-standard development. Use when the user asks to build, scaffold, design, review, or explain Java applications using Spring Boot 4.x, Spring Framework 7.x, Spring Modulith, or any related Spring ecosystem project. Triggers include: creating REST…
mittwald/typo3-smart-extension-builder
Skill Claude Code
Create complete TYPO3 extensions with domain models, controllers, plugins, and Fluid templates.
Skill Claude CodeCodex
Generate, modify, validate, execute and triage Flow Forge API test cases. Use when the user wants to turn requirement documents, API documents, table structures or business rules into executable YAML/Excel test cases, revise existing cases after requirement/API changes, run cases with the Flow Forge executor and…
Skill Claude CodeCodex
Ports a bundled MCP connector to the mcp-servers repo as an OSS npm package.
ccarvalho-eng/codex-elixir-phoenix
Skill Claude CodeCodex
Run the full plan-build-review-compound workflow for large Phoenix work.
Skill Claude CodeCodex
Documents the Invok HTTP execution API contract: how to call tools, how responses are structured, how to handle errors, and how to write defensive extraction code for workflow nodes. Use this skill when generating workflow code that calls Invok's /api/v1/execute/{toolCode} endpoint — not during the discovery and…
Skill Claude CodeCodex
A troubleshooting skill for Apache RocketMQ, a messaging system that sends data between applications. It covers failures in sending and receiving messages, message backlogs, connections, and access permissions.
Skill Claude CodeCodex
Use this skill when building or modifying an AI agent with the @sena-ai framework. It covers new-project setup, Slack connectors (HTTP/Socket Mode), writing sena.config.ts (runtime, hooks, schedules), defining custom tools, connecting MCP servers, and operating the CLI.
fanxuankai/cli-anything-harnesses
Skill Claude CodeCodex
CLI harness for CLIProxyAPI proxy server management.
Skill Claude Code
Messaging and middleware patterns for C# — Channels, MediatR, RabbitMQ/MassTransit, Azure Service Bus, Kafka, NServiceBus. Graduated complexity from simple to enterprise scale.
Skill Claude Code
Use when designing or architecting Elixir/Phoenix/LiveView applications, creating comprehensive project documentation, planning OTP supervision trees, defining domain models, structuring multi-app projects with path-based dependencies, or preparing handoff documentation for Director/Implementor AI collaboration.
Skill Codex
Use this skill when an LLM client needs to inspect or modify this Minecraft server through the repo's HTTP API and bundled helper scripts, without relying on MCP tools. Covers world reads, site surveys, terrain maps and smoothing, area locks and markers, queued builds with undo/redo, NBT placement with dry runs…
Skill Claude CodeCodex
A testing and quality-checking toolkit for running an application, finding bugs, and creating automated tests. It supports API tests and browser-based UI tests in Python or Java.
302ai/302AI-API-Integration-Skill
Skill Claude CodeCodex
ALWAYS use this skill when user needs ANY API functionality (AI models, image generation, video, audio, text processing, etc.). Automatically search 302.AI's 1400+ APIs and generate integration code. Use proactively whenever APIs or AI capabilities are mentioned.
Skill Claude Code
Benchling Python SDK and REST API integration for registry entities, inventory, ELN entries, workflows, Benchling Apps, and Data Warehouse queries. Use when automating lab data with benchling-sdk or the v2 API.
Skill Codex
Create or modify Halo CMS plugins, including Java backend code, plugin.yaml and extension resources, Gradle and DevTools configuration, plugin APIs and lifecycle, and Vue-based Console or User Center UI. Use for Halo plugin implementation, migration, debugging, or integration work; do not use for theme-only changes.
attentiondotnet/davidondrej-skills
Skill Claude CodeCodex
Use DeepAPI for scraping and safe email with DEEPAPIAPIBASEURL and DEEPAPIAPIKEY.
Skill Claude CodeCodex
Stores and retrieves ProcessWire API patterns, gotchas, and conventions via memvid hybrid search. Use when starting PW tasks, hitting PW errors, or when user asks to remember/recall ProcessWire knowledge. Persistent cross-project memory at /.memvid/processwire.mv2.
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: