Backend and APIs

Docat0209/mcp-openapi

MCP server Claude CodeCodexCursor +2

Turn any OpenAPI/Swagger spec into MCP tools. Zero config, zero code. Runs locally from the mcp-openapi npm package.

logfoxai/callspec

Skill Claude Code

Use when defining callspec routes, mountSpec, SDK codegen, Result-typed errors, MCP, or generated ApiClient code. Read before changing RPC APIs or error contracts.

CrashBytes/pusher-mcp-server

MCP server Claude CodeCodexCursor +2

Trigger events, query channels, and manage realtime messaging on Pusher Channels. Runs locally from the @crashbytes/pusher-mcp-server npm package. Needs 4 environment variables to run.

Py2755/aiogram-mcp

MCP server Claude CodeCodexCursor +2

MCP server middleware for aiogram Telegram bots — expose your bot to AI agents via the Model Context Protocol. Runs locally from the aiogram-mcp Python package. Needs 1 environment variable to run.

lawp09/bitbucket-mcp

MCP server Claude CodeCodexCursor +2

MCP Server for Bitbucket API - Container optimized with configurable tools, structured output and slim responses. Runs locally from the bitbucket-mcp-py Python package.

kozmos-tech/inhalt

MCP server Claude CodeCodexCursor +2

An open-source headless CMS for managing content models and entries. Runs locally from the @kozmos-tech/inhalt npm package.

ryanthegentry/402index-mcp-server

MCP server Claude CodeCodexCursor +2

MCP server for 402 Index — search 15,000+ paid API endpoints across L402, x402, and MPP protocols with real-time health monitoring. Runs locally from the @402index/mcp-server npm package.

Lehsqa/robyn-config-skills

Skill Codex

Robyn backend scaffolding and architecture guidance for projects using robyn-config. Use when creating or evolving Robyn services, choosing DDD vs MVC, choosing SQLAlchemy vs Tortoise, adding entities with robyn-config add, scaffolding admin panel with robyn-config adminpanel, adding observability stack with…

LeahyCC/claude-skills

Skill Claude CodeCodex

OWASP API Security Top 10 (2023) with production Next.js App Router code. Access control, authentication with MFA and password reset, input validation (SQL, NoSQL and command injection), rate limiting and per-account login throttling, security headers and CSRF, data exposure, supply chain and startup env checks, SSRF…

mcp-com-ai/api-to-mcp-skills

Skill Claude Code

Convert OpenAPI v3 specifications into MCP servers using HAPI CLI. Supports local, Docker, and Cloudflare Workers deployment. Zero code required. Use when you need to expose API functionality as MCP tools or deploy API-based services to multiple hosting platforms.

xonack/wp-php-architecture-claude-skill

Plugin Claude Code

Bundles 1 skill · 45 tokens together

Expert WordPress PHP architecture skill covering repository pattern, service layer, DDD adapted for WordPress hooks, SOLID principles in plugin/theme development, and modern PHP patterns for WordPress.

TheSethRose/Copilot-Skills

Agent Claude Code

Senior backend engineer specializing in scalable API development and microservices architecture. Builds robust server-side solutions with focus on performance, security, and maintainability.

Okyline/Okyline-skill

Skill Claude CodeCodex

Expert assistant for the Okyline schema language - create, edit, and convert JSON validation schemas using declarative, example-driven syntax with inline constraints.

iwritec0de/app-dev

Plugin Claude Code

Bundles 17 skills, 11 commands, 4 agents, 3 hooks · 2,429 tokens together

Full-stack Next.js development: App Router patterns, TypeScript engineering, Supabase/PostgreSQL/MySQL database integration, Prisma ORM, API design and scaffolding, authentication and authorization, Framer Motion animations, quality gate enforcement, and security scanning.

Impertio-Studio/n8n-Claude-Skill-Package

Skill Claude CodeCodex

Use when creating custom n8n nodes, defining node properties, implementing execute methods, or building declarative nodes. Prevents incorrect INodeProperties types and malformed displayOptions conditions. Covers INodeType interface, INodeTypeDescription, INodeProperties (22 types), displayOptions with rich conditions…

devctllabs/mockapi

Skill Codex

Create stateful TypeScript/Hono mock API servers from OpenAPI 3.0/3.1 contracts. Use for building OpenAPI-based mock APIs, creating or repairing .mockapi sidecars, validating mock profiles, generating admin state endpoints, or freeform requests such as "mockapi build a mock server for api/openapi.yaml".

ManojLingala/greybeard

Skill Claude CodeCodex

Makes your AI agent defensive about the backend failure modes that page you at 3am. Before writing server-side code, the agent stops at a ladder of hard-won rules — money as integer minor-units, idempotent mutations, timeouts and backoff on every external call, explicit transaction boundaries, no N+1 queries…

Wittlesus/cursorrules-pro

Cursor rule Cursor

You are an expert backend API developer. Follow these rules strictly for REST APIs, GraphQL servers, and microservices.

mathisk2095/jko-claude-plugins

Plugin Claude Code

Bundles 1 skill, 4 commands · 311 tokens together

Pure .NET 10 backend architecture for Kestrel-hosted REST and SignalR services with DI, data access, and SOLID review.

kinhluan/rules-quarkus-skills

Skill Claude CodeCodex needs its repo

Expert knowledge for building Quarkus applications with Bazel using the rulesquarkus build system. Use when user asks about Quarkus+Bazel builds, augmentation, or troubleshooting.

Qapla/qapla-api-skill

Skill Claude CodeCodex

Integrate with or answer questions about the Qapla' shipping & tracking REST API (public v1.3). Use this when working with Qapla' to push shipments or raw orders, generate and confirm carrier labels, track parcels, get real-time multi-carrier quotes, look up pickup points (PUDO), verify addresses, list couriers and…

fellyph/ai-instructions

Skill Claude CodeCodex

Guide for creating WordPress Playground Blueprint JSON files and executing WP-CLI commands. Use when building Blueprint files, automating WordPress/WooCommerce management via CLI, configuring WordPress Playground environments, or troubleshooting. Covers blueprint creation, WP-CLI commands, and WooCommerce CLI…

hly-AI/codingplan

Cursor rule Cursor

A set of rules for designing back-end APIs, including REST conventions, versioning, and error formats.

tecnomanu/agent-rules-kit-mcp

Cursor rule Cursor

State management concepts and approaches in Node.js applications.