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.

insforge

457

InsForge/insforge-skills

Plugin Claude Code

Bundles 4 skills · 444 tokens together

The backend platform for AI-native developers. A Postgres-based backend with auth, storage, compute, hosting, and AI gateway — built for coding agents. This plugin gives agents the full InsForge surface: database CRUD with RLS, authentication, storage, edge functions, AI, realtime, Stripe payments, and deployments.…

not rated 47 4d ago A tokens not measured original Apache-2.0

hypervibe

458

flavien-ia/hypervibe-harness

Plugin Claude Code

Bundles 89 skills, 1 hook, 1 MCP server · 7,235 tokens together

Bootstrap a full-stack T3 project (Next.js + tRPC + Drizzle + Tailwind + shadcn/ui) with modular addons for database, auth, payments, email, storage, i18n, analytics, domain, and SEO. Deploys to Vercel with GitHub integration.

not rated 47 changed 17d ago A tokens not measured original Apache-2.0

supabase

459

supabase-community/supabase-plugin

Plugin Claude Code

Bundles 2 skills, 1 MCP server · 367 tokens together

Official Supabase plugin for Claude Code with bundled Supabase skills and MCP access for project management, database work, auth, storage, and Postgres best practices.

not rated 46 +3 changed 21d ago A tokens not measured

jabrena/cursor-rules-spring-boot

Cursor rule Cursor

Spring Boot Core guidelines focus on proper usage of main annotations, bean management, and configuration best practices to build maintainable and efficient Spring Boot applications.

not rated 46 7mo ago A 0 tokens original Apache-2.0 archived

postmark-webhooks

461

ActiveCampaign/postmark-skills

Skill Claude CodeCodex

Use when setting up Postmark outbound webhooks for tracking email delivery, bounces, opens, clicks, spam complaints, or subscription changes — includes webhook configuration, endpoint verification, per-webhook statistics, retry behavior, payload handling, and security.

not rated 46 changed 1mo ago A SkillSpector: warn 54 tokens original MIT

goddd-api-doc

462

ixugo/goddd

Skill Cursor

Instructions for keeping API documentation in Apifox, a service for describing and testing web APIs. It uses OpenAPI 3.1, a standard format for documenting API endpoints and their request and response data.

not rated 46 +1 changed 1mo ago A 80 tokens

qiskit-mcp-dev

463

Qiskit/mcp-servers

Skill Claude Code

Guide development of Qiskit MCP servers. Use when creating tools, resources, tests, or new servers. Helps with async patterns, pytest fixtures, GitHub CI/CD setup, and code quality. Trigger on "add tool", "add resource", "write test", "new server", "FastMCP", "MCP development", or "GitHub workflow".

not rated 46 29d ago A 81 tokens original Apache-2.0

ChristophEnglisch/keycloak-model-context-protocol

MCP server Claude CodeCodexCursor +2

Manage Keycloak users, groups, roles and realms through the Keycloak Admin REST API. Runs locally from the keycloak-model-context-protocol npm package. Needs 14 environment variables to run.

not rated 46 11d ago A Socket: warn tokens not measured original MIT

workos-setup

465

workos/skills

Skill Claude CodeCodex

Set up WorkOS AuthKit sign-in in a project with npx workos@latest install, which needs no WorkOS account. Use when the user asks to add WorkOS or AuthKit authentication to an app, to scaffold a new app with WorkOS, or to claim the temporary WorkOS environment the installer created.

not rated 46 4d ago A 71 tokens original MIT

xero_command_line

466

XeroAPI/xero-command-line

Skill Claude Code

Interact with the Xero accounting API using the xero CLI tool. Manage contacts, invoices, quotes, credit notes, payments, bank transactions, items, manual journals, tracking categories, currencies, tax rates, reports, organisation details, and attachments.

not rated 46 1mo ago B 57 tokens original MIT

sent

467

sentdm/sent-plugin

Plugin Claude Code

Bundles 21 skills, 1 MCP server · 1,650 tokens together

Official Sent plugin for SMS, WhatsApp, RCS, scheduled template sends, Sender Profiles, SMS compliance, authorized feedback, contacts, analytics, API integration, webhooks, routing, and migration.

not rated 45 +4 changed 18d ago A tokens not measured original MIT

zach22-1999/lingxing-mcp

Skill Claude Code needs its repo

A reusable client foundation for connecting to Lingxing ERP’s OpenAPI, including authentication, request signing, documentation caching, and basic connection checks.

not rated 45 +1 3mo ago A 94 tokens original MIT

darto-add-route

469

evandersondev/darto

Skill Claude CodeCodex

Add or modify HTTP endpoints in a Darto (Dart) web app — verbs, path/query params, request-body reading, route groups, and Context response helpers. Use when building or changing API routes in a project that depends on the darto package (import 'package:darto/darto.dart'). Not for Express/Node — Darto handlers take a…

not rated 44 4mo ago A 90 tokens original MIT

design-api

470

paraskakis/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 from requirements or stories. For a single step only, use…

not rated 44 +1 25d ago A 90 tokens original MIT

wp-plugin-development

471

fernandotellado/ai-skills

Skill Claude CodeCodex

Architecture and development guidelines for WordPress plugins published on wordpress.org: file structure, plugin header, lifecycle hooks, Settings API, admin UI, escaping helpers for admin JavaScript, default values and option migrations, translatable defaults, multisite-shared resources, short-circuit filters, custom…

not rated 44 +1 changed 1mo ago A 141 tokens GPL-3.0

add-a-service

472

lonormaly/builders-stack

Skill Claude CodeCodex needs its repo

Scaffold a new service under services/ in the builders-stack monorepo. Use when something needs its own URL, port, or independent deploy. Covers the package, entrypoint, config, Tilt, deployment registry, and shared small-image build path.

not rated 42 1mo ago A SkillSpector: pass 55 tokens original MIT

postman

473

Postman-Devrel/postman-claude-code-plugin

Plugin Claude Code

Bundles 13 skills, 1 hook, 1 MCP server · 1,329 tokens together

Full API lifecycle management for Claude Code. Sync collections, generate client code, discover APIs, run tests, create mocks, publish docs, and audit security. Powered by the Postman MCP Server.

not rated 42 +1 changed 1mo ago A tokens not measured original Apache-2.0 archived

java-patterns

474

DVNghiem/FlowDeck

Skill Claude CodeCodex

Modern Java 17+ patterns — records, sealed classes, Stream API, CompletableFuture, Spring Boot, JPA. Activate when writing or reviewing Java.

not rated 42 +3 2mo ago A SkillSpector: pass 35 tokens original MIT

workflow

475

WebDevPeterGriffin/The-VibeCode-Bible

Cursor rule Cursor

This file provides rules and context for generating or understanding Go code related to a custom Domain Specific Language (DSL) for defining Temporal workflows within this project.

not rated 42 2d ago A 0 tokens

powertools-aws

476

aws-powertools/powertools-mcp

Skill Claude CodeCodex

ALWAYS use this skill when writing AWS Lambda functions in Python, TypeScript, Java, or .NET. Provides serverless best practices for structured logging, distributed tracing (X-Ray), CloudWatch metrics, idempotency, batch processing, and event handling using Powertools for AWS Lambda. Essential for any Lambda…

not rated 41 +1 4mo ago A 71 tokens archived

auth

477

himself65/auth-spec

Plugin Claude Code

Bundles 2 skills · 93 tokens together

Auth skills for Claude Code — scaffold hand-rolled auth endpoints and audit auth code against security best practices.

not rated 41 28d ago A tokens not measured

backend-engineer

478

CodelyTV/agentic_programming-course

Agent Claude Code needs its repo

Use when creating or modifying backend code: API routes, use cases, domain models, repositories, infrastructure services, or dependency injection configuration. Follows Hexagonal Architecture, DDD, and DIOD conventions.

not rated 41 +1 6mo ago A 45 tokens original MIT

django-patterns

479

VenTheZone/pi-dots

Skill Claude CodeCodex

Django architecture patterns, REST API design with DRF, ORM best practices, caching, signals, middleware, and production-grade Django apps.

not rated 40 3mo ago A 32 tokens

create-server

480

msfeldstein/mcp-test-servers

Cursor rule Cursor

To create a new server, copy the ping-server.js for the pattern and use the MCP SDK documentation Add the server to servers.json so it will show up in the cli and readme and gallery Do not print anything to console.log since this is a stdio service and you can't write to it without breaking the protocol Look up the…

not rated 40 7mo ago A 98 tokens

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: