Development · Backend development

Guides changes to an existing Twenty app: adding or editing objects, layouts, logic functions and front components, with a plan stated before multi-entity edits.

twentyhq/twenty

Execute read-only Ruby/Rails commands against Gumroad's production database for debugging and investigation.

antiwork/gumroad

A skill your agent uses to analyze how a Laravel application is actually written and record its conventions as shared rules.

anonaddy/anonaddy

Provides comprehensive code review guidance for React 19, Vue 3, Angular 17+, Svelte 5, Rust, TypeScript, Java, Java 8, PHP, Ruby, Rails, Python, Django, FastAPI, Go, C/.NET, Kotlin, Swift, Dart…

awesome-skills/code-review-skill

Contributor guide for step three of adding a syncable entity to the Twenty server: write the validator, the migration action builder and the orchestrator wiring.

twentyhq/twenty

Guides adding an LLM provider to DeepChat through explicit source changes: collect the provider details, pick a transport path and add registry entries and tests.

ThinkInAIXYZ/deepchat

A skill your agent uses for any task or question involving Livewire.

coollabsio/coolify

Avoid common Ruby and Rails antipatterns that degrade maintainability and performance.

doorkeeper-gem/doorkeeper

Covers developing the LangBot core backend and web UI: dev setup, repo layout, API auth types, adding endpoints, migrations and keeping the MCP server in step.

langbot-app/LangBot

Step-by-step guide for adding a new built-in RESP command to Garnet, from the command enum and parser to storage callbacks, command metadata JSON and tests.

microsoft/garnet

A skill your agent uses for any task or question involving Livewire.

yungifez/skuul

Write, refactor, and review Rails code using layered architecture principles from "Layered Design for Ruby on Rails Applications".

evilmartians/redprints-cfp

GPU frame debugging with RenderDoc via rdc-cli. An agent skill from rudybear/renderdoc-skill.

rudybear/renderdoc-skill

Prepare and publish Cadwyn releases. An agent skill from zmievsa/cadwyn.

zmievsa/cadwyn

Walks through the first of six steps for adding a syncable entity to Twenty's server: metadata name, TypeORM entity, flat types and central constants.

twentyhq/twenty

Investigate backend performance using Django Silk profiling data.

baserow/baserow

Apply core Ruby on Rails best practices for architecture, naming, safety, and maintainability.

marckohlbrugge/37signals-skills

Guidance for Groovy 5 work in Grails projects: syntax, closures, traits, DSLs, metaprogramming, Spock tests, static compilation and Java 21 integration.

apache/grails-core

Routine update of all project dependencies — uv itself, uv.lock (all groups), tool versions pinned in GitHub workflows and .pre-commit-config.yaml (uv, ruff, mypy...), and SHA-pinned GitHub Actions.

alorence/django-modern-rpc

Provides comprehensive code review guidance for React 19, Vue 3, Angular 17+, Svelte 5, Rust, TypeScript, Java, PHP, Python, Django, Go, C/.NET, Kotlin, Swift, NestJS, C/C++, and more.

Rain-kl/OpenFlare

Review backend code for quality, security, maintainability, and best practices based on established checklist rules.

nazarli-shabnam/clevis

A skill your agent uses when implementing, debugging, refactoring, or testing existing BootUI Java code, including framework-neutral engine logic, Spring MVC and WebFlux adapters, Quarkus runtime…

jdubois/boot-ui

Skill for identifying code smells and refactoring code using Clean Code, SOLID, and DRY principles.

fike/fastapi-blog

Apply best practices for Rails background jobs using simple orchestration, idempotency, and safe retries.

marckohlbrugge/37signals-skills

Walks a contributor through adding a new HTTP framework integration to the evlog logging package: middleware source, build entry, exports, tests, example app and docs.

evloghq/evlog

Guides agents writing or changing WooCommerce backend PHP so new classes, hooks and unit tests follow the project's conventions.

woocommerce/woocommerce

Maintains Verdaccio's bundled plugins and the plugin contracts in @verdaccio/core, and diagnoses plugin loading problems.

verdaccio/verdaccio

Add, enable, or start using a package in a monorepo-consuming Laravel project — both Moox monorepo packages (moox/) and the project's own packages.

mooxphp/moox

Generate, modify, and render professional README.md files and project introduction HTML pages using the bundled README Generator Pro FastAPI application.

beizhi23/README-Generator-Pro

Builds a feature, page, component, API or data layer from an approved spec and AGENTS.md, and sends you back to /architect when a key decision is missing.

jsmastery-pro/skills

Conventions for the opentrons-ai-server FastAPI service — project structure, uv dependency management, settings, testing, Docker, and deployment.

Opentrons/opentrons

A skill your agent uses when writing or modifying documentation, guides, or example READMEs.

volfpeter/holm

Review a libuipc pull request end-to-end: checkout the PR, summarize changes, list files for the human reviewer, and perform a domain-aware AI review covering physics correctness, backend…

spiriMirror/libuipc

Project conventions for Rails version upgrades in this app. An agent skill from recursecenter/community.

recursecenter/community

Debugger-first runtime root-cause analysis for JVM code in IntelliJ IDEA.

xpinjection/test-driven-spring-boot

Modern Python coaching covering language foundations through advanced production patterns.

SpillwaveSolutions/agent-brain

Review Ruby/Rails code like DHH would - direct, opinionated, allergic to over-engineering.

marckohlbrugge/37signals-skills

Write Ruby gems following Andrew Kane's proven patterns and philosophy.

Microck/ordinary-claude-skills

Wire a scaffolded PortalJS portal to a CKAN backend over its API.

datopian/portaljs

A skill your agent uses when debugging unexpected behavior in Laravel Octane with FrankenPHP - stale data between requests, memory leaks, singleton contamination, static property state, or anything…

AratKruglik/claude-laravel

Generates comprehensive README.md files for Spring Boot modules based on task specification requirements

Juncai22/spring-ai-agent-learning

Add or manage third-party dependencies in a Polylith workspace.

DavidVujic/python-polylith

Guides choices among GenServer, Supervisor, Task, Registry, ETS and Broadway when designing or debugging Elixir concurrency, state and fault recovery.

georgeguimaraes/elixir-agent-tools

Automatically migrate Python web applications between frameworks (Flask → FastAPI, Django → FastAPI).

ArabelaTso/Skills-4-SE

Master C/.NET backend development patterns for building robust APIs, MCP servers, and enterprise applications.

wshobson/agents

Identifies and fixes Rails performance issues including N+1 queries, slow queries, and memory problems.

ThibautBaissac/rails_ai_agents

Interactively fix any type checking issues in Python code. An agent skill from saaspegasus/django-boilerplate.

saaspegasus/django-boilerplate

Verification loop for Laravel projects: env checks, linting, static analysis, tests with coverage, security scans, and deployment readiness.

affaan-m/ECC