Backend and APIs

18,757 mods in this category, of every kind an agent can take. Each one carries what it costs per session, what the scan found, and whether it is the original.

LX-Director/claude_fullstack-ai-builder

Skill Claude CodeCodex

A method for building and launching complete AI-powered web applications, from requirements and technical planning through the front end, back end, AI integration, and deployment. It is aimed at people who want to create an application without a back-end engineer.

not rated 1 4mo ago A 201 tokens

building-mcp-servers

1755

cyberreinxy/mcp-server-skill

Skill Claude CodeCodex

Use this skill whenever the user wants to design, build, harden, review, or debug an MCP (Model Context Protocol) server — including "build me an MCP server for X", connecting an AI agent/Claude to a database or API, adding tools/resources to an existing MCP server, reviewing a contributor PR against an MCP server, or…

not rated 1 1mo ago A 160 tokens original MIT

alexpizarro/azure-lean-stack-skills

Plugin Claude Code

Bundles 16 skills · 1,660 tokens together

Azure Lean Stack — Claude Code skills for building Azure web apps that cost nothing when nobody's using them and scale up cleanly when they do. 16 composable skills, 38+ documented gotchas, local→test→prod branch-per-environment CI/CD. Every pattern proven in a real production project. Complementary to Microsoft's…

not rated 1 1mo ago A tokens not measured original MIT

yuriymarad/laravel-skills

Skill Claude CodeCodex

Use this skill for Laravel backend tasks where implementing, changing, or reviewing functionality requires architecture decisions. This skill defines the project's custom architectural approach and should be treated as the source of truth for architecture, layer placement, and responsibility boundaries. Use it when…

not rated 1 changed 9d ago A 122 tokens

prismic

1759

prismicio/skills

Skill Claude Code

Use whenever Prismic is mentioned or relevant in any way — including questions, lookups, configuration, repository settings, content modeling, content types, slices, localization, previews, API tokens, webhooks, syncing local models, or reading Prismic documentation. Load on any reference to Prismic, even for simple…

not rated 1 changed 2d ago A Socket: passSnyk: warn 67 tokens

zavu-skills

1760

zavudev/zavu-skills

Plugin Claude Code

Bundles 14 skills · 470 tokens together

Claude Code skills for the Zavu unified messaging API. Send SMS, WhatsApp, Email, Telegram, and Voice messages with intelligent routing.

not rated 1 3d ago A tokens not measured original Apache-2.0

fastapi-conventions

1761

Cypsy1714/cchad

Skill Claude CodeCodex

FastAPI routing, dependency injection, and async patterns. Use when building or reviewing FastAPI backends.

not rated 1 2mo ago A 26 tokens original MIT

distributed-architect

1762

Langerrr/distributed-architect

Plugin Claude Code

Bundles 3 skills · 301 tokens together

Distributed systems reasoning framework — boundary analysis, concurrency checking, and anti-pattern detection for LLM-assisted development.

not rated 1 changed 9d ago A tokens not measured original MIT

type-foundry

1764

waveriderai/cli-type-foundry

Plugin Claude Code

Bundles 5 skills · 536 tokens together

Casts a spec and a CLI from closed apps that have no API. Drop an APK, IPA, EXE, DMG or traffic capture; a three-pass research method with built-in blind-spot diagnosis turns it into a feature spec, a reconstructed OpenAPI document, and optionally a CLI.

not rated 1 1mo ago A tokens not measured

drogon

1766

voidvec/drogon-claude-plugin

Plugin Claude Code

Bundles 17 skills, 2 hooks · 632 tokens together

Guidance for writing C++ back-end services with Drogon, a web framework for building HTTP servers. It focuses on asynchronous code and common problems with callbacks and event loops.

not rated 1 16d ago A tokens not measured original MIT

platform-api

1767

MakingChatbots/genesys-cloud-skills

Skill Claude Code

Queries the Genesys Cloud Platform API schema for endpoint details, permissions, parameters, and response formats. Use when user asks about Genesys Cloud API endpoints (e.g., "/api/v2/assistants/queues"), API documentation, API permissions, schemas, capabilities, or when implementing Genesys Cloud operations.

not rated 1 6mo ago A 65 tokens original MIT

edgesparkhq/codex-plugins

Skill Codex

Build and modify EdgeSpark apps. Use when a project has edgespark.toml, the user mentions EdgeSpark, or work involves the edgespark CLI, server SDK types, storage/auth/database workflows, deployment, or @edgespark/web.

not rated 1 4mo ago A 55 tokens original MIT

drmhse/authos_skill

Skill Codex

Secure backend APIs with AuthOS-issued JWTs and the AuthOS Node server adapter. Use when building an API that must verify AuthOS bearer tokens, enforce JWT claims, add Express middleware, validate JWKS keys, or create a backend-owned session after a browser OAuth callback.

not rated 1 3mo ago A 62 tokens original MIT

design-api

1771

unperturbed-longislandsound997/skills

Skill Claude CodeCodex

Design an API end-to-end — from requirements to a validated OpenAPI spec. Generates stories for review, then produces a linted spec. Emmanuel Paraskakis's method for designing APIs with LLMs. Use when user says "/design-api" or asks to design an API.

not rated 1 yesterday A 60 tokens copy · 89% MIT

mcp-openapi-proxy

1772

rendis/mcp-openapi-proxy

Skill Codex needs its repo

Use when connecting a REST API to an MCP client, setting up mcp-openapi-proxy, exposing an OpenAPI-backed navigator/executor MCP server, or authenticating with OIDC/static tokens for API proxying.

not rated 1 4mo ago C 51 tokens original MIT

fastapi-best-practices

1773

dkmqflx/fastapi-best-practices-plugin

Plugin Claude Code

Bundles 3 skills · 222 tokens together

FastAPI best practices — 3 skills, 41 rules total, grounded in the official FastAPI docs, with incorrect/correct examples. Core skill (33 rules: models, params, structure, DI, errors, async, streaming, background/config, lifespan, middleware, docs) plus dedicated fastapi-security (5 rules) and fastapi-testing (3…

not rated 1 2mo ago A tokens not measured original MIT

nestjs-best-practices

1774

dkmqflx/nestjs-best-practices-plugin

Plugin Claude Code

Bundles 12 skills · 706 tokens together

12 NestJS best-practice skills (90 rules) covering modules & DI, controllers, validation, guards/auth, interceptors, exception filters, config, database, caching/queues, testing, security, and performance/logging.

not rated 1 2mo ago A tokens not measured original MIT

pexip

1775

Josh-E-S/awesome-pexip-skills

Plugin Claude Code

Bundles 17 skills · 1,748 tokens together

Claude Code skills for building Pexip Infinity video calling apps. Covers call lifecycle, media pipeline, reconnect, preflight, signals, chat, participants, breakouts, layouts, plugin host, and more. References webapp3 v40-12.0.

not rated 1 3mo ago A tokens not measured original MIT

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: