12,398 tagged Backend and APIs, measured the same way as everything else here.
Browse within: agents 125skills 115LLM 111agent 89api 81azure 80agentic-ai 78claude-code-plugin 60ai-coding-agent 58cli 58antigravity 54sdk 51nextjs 50claude-code-skills 48
Skill Claude CodeCodex
Generate a complete CRUD REST API with validation, error handling, auth middleware, tests, and OpenAPI docs. Use when asked to create API endpoints, REST resources, or backend CRUD operations.
Skill Claude CodeCodex
Run nbox as an MCP server (read-only by default; optional local stdio writes with --local-writes, or shared HTTP/OIDC writes with --allow-writes + nbox:write + [serve.vault]) so an agent host can query NetBox over JSON-RPC — stdio or HTTP+OIDC transport, the read tools (search/get/getinterface/history/…), the…
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.
Skill Claude Code
Error handling patterns for API endpoints. Use when implementing error handling, writing middleware, or reviewing how errors are caught and formatted in API code.
Skill Claude CodeCodex
Helps developers integrate the Channel3 API for product search (text, image, semantic, and agentic), "more like this" recommendations, multi-merchant offer comparison, URL-to-product lookup, conversational shopping agents, price tracking, click/transaction reporting, and affiliate commissions. Channel3 is a universal…
Skill Codex
Design, generate, review, apply, and roll back Frappe or ERPNext metadata changes through Muster. Use for DocTypes, child tables, custom fields, property setters, workflows, roles, permissions, reports, print formats, web pages, workspaces, fixtures, patches, or installed-app compatibility.
Skill Claude CodeCodex
Laravel API architecture and code generation guide. JSON:API v1.1 spec compliant. Enforces layered architecture: Controller → Service → Repository → QueryBuilder. Uses timacdonald/json-api for resources, spatie/laravel-query-builder for filtering/sorting. Covers DTOs, Enums, public keys, Scramble docs, testing.…
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…
mathruffian-dot/clasp-gas-skill
Skill Codex
Instructions for connecting a coding agent to Google Apps Script through `clasp`, Google’s command-line tool for downloading and uploading Apps Script code.
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…
CJHwong/py-clean-architecture-examples
Skill Claude CodeCodex
Use this skill when the user asks about Clean Architecture in Python — not generic theory, but the specific layer conventions (l1entities, l2usecases, l3interfaceadapters, l4frameworksanddrivers), folder patterns, boundary interfaces, and .importlinter.ini contracts from CJHwong/py-clean-architecture-examples. Fetches…
Skill Claude CodeCodex
Scaffold a REST endpoint with controller, service, DTOs, tests, and error handling using project conventions.
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…
aitormendez/roots-ecosystem-skill
Skill Claude CodeCodex
Roots ecosystem implementation guide for Bedrock, Sage, Acorn, Trellis, @roots/vite-plugin, roots/wp-config, WP Packages, Trellis CLI, and first-party Acorn extension packages. Use when working on Roots-based WordPress projects, especially for Bedrock configuration and Composer-managed WordPress, Sage Blade…
Skill Claude CodeCodex
FastAPI Best Architecture (fba) project development guide. Use when working in fba projects to design, implement, review, or document APIs, Schema, Service, CRUD, Model, configuration, response contracts, pagination, cache, Celery, i18n, coding style, plugin development, plugin README files, plugin sharing, plugin…
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
Spring Boot version upgrade paths from v2.x through v4.0. javax to jakarta migration, Spring Security 5 to 7, RestTemplate to RestClient, virtual threads, OpenRewrite recipes, and progressive migration strategies.
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.
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.
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: