Backend and APIs

19,654 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.

add-handler

313

MuhammadUsmanGM/claude-code-best-practices

Skill Claude Code

Scaffold a new HTTP handler with service function, store method (if needed), and table-driven test, following the project's internal/{api,service,store} layout. Invoke when the user asks to add an endpoint, handler, or route.

not rated 106 +1 13d ago A 52 tokens original MIT

software-architect

315

xuanbingbingo/claude-standard-dev-team

Agent Claude Code

A software architecture agent that turns product requirements into technology choices, API contracts, database schemas, and other design documents.

not rated 105 +1 changed 5d ago A 105 tokens original MIT

googleads/google-ads-api-developer-assistant

Plugin Claude Code

Bundles 10 skills, 10 commands · 372 tokens together

Exposes expert Google Ads API capabilities: GAQL static analysis & live dry-runs, Protobuf object inspection, conversion diagnostics, PMax webpage filters, MCC account hierarchy retrieval, client library version discovery & sync, interactive tutorial, and Ruff-linted Python code generation.

not rated 103 yesterday A tokens not measured original Apache-2.0

convex-rules

317

vvedantb/eva

Skill Claude Code

Skill "convex-rules" from vvedantb/eva, covering convex guidelines, function guidelines, new function syntax, http endpoint syntax and validators.

not rated 101 +1 yesterday A SkillSpector: warn 0 tokens original MIT

bitfinex-net

318

JKorf/Bitfinex.Net

Cursor rule Cursor

Conventions for using Bitfinex.Net library when working with Bitfinex in C#/.NET. Apply when generating code that interacts with the Bitfinex API.

not rated 100 changed 1mo ago A 0 tokens original MIT

newapi

319

QuantumNous/skills

Skill Claude Code

Assistant for newapi (new-api), an open-source unified AI gateway platform (https://github.com/QuantumNous/new-api). Use when the user asks about New API, managing models, groups, balance, or tokens, or securely copying keys, applying them to config files, or using them in commands without exposing secrets.

not rated 100 7mo ago A Socket: warnSnyk: warn 68 tokens original MIT

pagerduty-webhooks

320

hookdeck/webhook-skills

Skill Claude CodeCodex

Receive and verify PagerDuty V3 webhooks (outbound webhook subscriptions created via the /webhooksubscriptions REST API). Use when setting up a PagerDuty webhook handler, debugging X-PagerDuty-Signature verification, or handling events like incident.triggered, incident.acknowledged, incident.resolved…

not rated 98 +1 yesterday A 192 tokens original MIT

crud

321

filipebraida/adonisjs-starter-kit

Skill Claude Code

Build an end-to-end CRUD stack in AdonisJS + Inertia: resource route → thin controller → VineJS validator → Bouncer policy → single-purpose action → transformer variant → Inertia page. Trigger on: "add CRUD for X", "create resource", "list/create/edit/delete X", "resource endpoint".

not rated 97 +1 2mo ago A SkillSpector: pass 66 tokens original MIT

backend-connector

322

wasintoh/toh-framework

Agent Claude Code

Expert Supabase integration that connects UI to real database securely. Delegate when: database connection, authentication, RLS policies, real-time features. Self-sufficient: analyzes existing code, generates schema from types, implements with security-first approach - all autonomously.

not rated 96 +2 changed 2mo ago A 56 tokens original MIT

django-orm-lens

323

FROWNINGdev/django-orm-lens

Skill Claude CodeCodex

Static analysis for Django codebases: real answers about models, relations, N+1 queries, migration safety, schema drift and "what breaks if I remove this field", computed from the AST — no database, no settings module, no django.setup(). Use this skill whenever the user works in a Django project and asks about models…

not rated 96 changed 6d ago A 150 tokens original MIT

supabase-server

324

supabase/server

Skill Claude CodeCodex ✓ vendor

Use when planning or writing server-side code that uses @supabase/server — Edge Functions, Hono apps, webhook handlers, or any backend that creates Supabase clients or validates inbound auth. Trigger before writing or modifying any file that imports from @supabase/server (or sub-paths like @supabase/server/core)…

not rated 94 changed 25d ago B Socket: passSnyk: warnSkillSpector: warn 298 tokens original MIT

aspire

325

microsoft/aspire-skills

Plugin Claude Code ✓ vendor

Bundles 9 skills · 248 tokens together

Aspire skills plugin for AI coding agents. Eight skills: aspire (router), aspire-init (skeleton drop), aspireify (AppHost wiring), aspire-project-v2-migration (approval-first 13.6+ migration), aspire-orchestration (lifecycle, guardrails), aspire-deployment (publish, deploy, destroy, pipeline steps), aspire-monitoring…

not rated 93 changed 2d ago A tokens not measured original MIT

clerk

326

clerk/skills

Plugin Claude Code

Bundles 22 skills, 1 MCP server · 1,568 tokens together

Add authentication and user management with Clerk. Skills for setup, framework patterns, organizations, billing, webhooks, and testing, plus the Clerk MCP server.

not rated 93 +4 yesterday A tokens not measured

saas-launcher

327

komunite/tezgah

Skill Claude CodeCodex

Sıfırdan production-ready bir SaaS uygulaması kur. Ödeme, kimlik doğrulama, veritabanı, e-posta, landing page, SEO ve API güvenliği dahil tüm katmanları kapsar. Kullanıcı SaaS kurmak, web uygulaması başlatmak, AI aracı oluşturmak veya online ürün çıkarmak istediğinde bu skill'i kullan — "startup kur", "proje başlat"…

not rated 92 7mo ago A 136 tokens original MIT

api-authentication

328

stefan-jansen/claude-code-toolkit

Skill Claude CodeCodex

API authentication patterns including JWT, OAuth 2.0, API keys, and session-based auth. Covers token generation, validation, refresh strategies, security best practices, and when to use each pattern. Use when implementing API authentication, choosing auth strategy, securing endpoints, or debugging auth issues.…

not rated 92 +1 4mo ago A SkillSpector: warn 77 tokens original MIT

module:assistant

329

escapeboy/ai-prompts

Skill Claude CodeCodex

Add an AI assistant chat panel to any Laravel project — with tool calling, streaming, and MCP support.

not rated 91 1mo ago A SkillSpector: warn 24 tokens original MIT

fastify

330

blockmatic/basilic

Cursor rule Cursor

Fastify backend development standards and patterns.

not rated 90 changed 1mo ago A 0 tokens original MIT

connector-fixer

331

fivetran/connector_sdk_tools

Agent Claude Code

Debug and fix errors in a Fivetran connector. Use when tests fail or the user reports connector issues.

not rated 89 changed yesterday A 27 tokens original MIT

agora

332

AgoraIO/skills

Plugin Claude Code

Bundles 1 skill, 1 MCP server · 77 tokens together

Real-time communication with Agora SDKs — RTC, RTM, Conversational AI, and token generation.

not rated 89 changed 1mo ago A tokens not measured original MIT

bankr-agent-dev

333

BankrBot/claude-plugins

Plugin Claude Code

Bundles 16 skills, 1 command · 836 tokens together

Developer toolkit for building applications on top of the Bankr Agent API - scaffold projects, understand API patterns, and build integrations.

not rated 88 7mo ago A tokens not measured original MIT

michtio/craftcms-claude-skills

Plugin Claude Code

Bundles 13 skills, 6 agents · 1,840 tokens together

Production-ready skills and agents for Craft CMS 5 development. Plugin development (elements, services, controllers, migrations, events, testing, headless, configuration), site development (content modeling, Twig templates, atomic design, multi-site), a name-routed index of 24 plugin references (config, Twig/PHP API…

not rated 88 +1 changed yesterday A tokens not measured original MIT

nap-api

335

neutree-ai/agent-platform

Skill Claude CodeCodex

Manage NAP workspaces, prompts, templates, credentials, service tokens, agent files, providers, tags, shares, schedules via REST, and build applications whose users each get NAP agents (the App Spec). Trigger when the user wants to script or automate NAP outside the UI — e.g. "create a workspace", "rotate a token"…

not rated 88 +3 changed 8d ago A SkillSpector: warn 121 tokens original Apache-2.0

lathe

336

lathe-cli/lathe

Skill Claude CodeCodex

Initialize CLI-first applications and keep their OpenAPI contract, generated CLI, and Agent Skill synchronized. Use when creating an application with lathe init or changing a Lathe-generated application.

not rated 87 changed 1mo ago A SkillSpector: pass 39 tokens original Apache-2.0

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: