Andrew Markle

2x-skills. A collection of claude skills we think are generic enough to be useful to everyone

rails-audit-thoughtbot. Claude skill to run code audits

rails-agent-skills. This is my personal configuration of skills as a Ruby on Rails Dev

hunk. Review-first terminal diff viewer for agentic coders

impeccable. The design language that makes your AI harness better at design.

evals-skills. Skills for AI Evals to compliment the course: AI Evals For Engineers & PMs

http_decoy. A real fake HTTP server for RSpec. No cassettes. No scattered stubs.

skills. Skills for Real Engineers. Straight from my .agents directory.

warden. Your code is under new management. Agents that review your code.

fabro. ⚒️ The open source dark software factory for expert engineers.

augur. 🇺🇦🇵🇱 A static analysis tool for OpenTelemetry Collector configurations. Built on OPA/Rego, it validates your pipelines, receivers, processors, and exporters against customizable policy rules – catching misconfigurations before they reach production

planning-with-files. Persistent file-based planning for AI coding agents and long-running tasks. Crash-proof markdown plans, session recovery after /clear and compaction, per-turn re-injection against context rot, deterministic completion gate. Manus-style. Claude Code, Codex, Cursor, Kiro, OpenCode and 60+ agents via the Agent Skills standard.

pi-autoresearch. Autonomous experiment loop extension for pi

serena. A powerful MCP toolkit for coding, providing semantic retrieval and editing capabilities - the IDE for your agent

type_toolkit. A lightweight runtime type-related concepts.

rubydex. A high-performance static analysis toolkit for Ruby

Claudeception. A Claude Code skill for autonomous skill extraction and continuous learning. Have Claude Code get smarter as it works.

ruby_memcheck. Use Valgrind memcheck on your native gem without going crazy

worktrunk. Worktrunk is a CLI for Git worktree management, designed for parallel AI agent workflows

ralphy. My Ralph Wiggum setup, an autonomous bash script that runs Claude Code, Codex, OpenCode, Cursor agent, Qwen & Droid in a loop until your PRD is complete.

Libation. Libation: Liberate your Library

activesupport-json_logging.rb. Structured JSON logging for Rails and ActiveSupport with a safe, single-line formatter.

abq. ABQ is a universal test runner that runs test suites in parallel. It’s the best tool for splitting test suites into parallel jobs locally or on CI

opencode. The open source coding agent.

rails_pulse. Rails Pulse is a comprehensive performance monitoring and debugging gem that provides insights into your Rails application's health.

code. Every Code - push frontier AI to it limits. A fork of the Codex CLI with validation, automation, browser integration, multi-agents, theming, and much more. Orchestrate agents from OpenAI, Claude, Gemini or any provider.

rails-diff. Compare Rails-generated files with the ones in your repository

activerecord-tenanted. Enable a Rails application to have separate databases for each tenant.

stoplight. :traffic_light: Traffic control for code.

container. A tool for creating and running Linux containers using lightweight virtual machines on a Mac. It is written in Swift, and optimized for Apple silicon.

sidekiq-memory_logger. Memory logging for Sidekiq jobs

breaker_machines. Modern circuit breaker for Ruby & Rails. Thread-safe, fiber-ready async support. Built-in fallbacks, rich introspection, clean DSL. Memory-efficient with jitter & monitoring.

roast. Structured AI workflows made easy

bundler-multilock. Support multiple lockfiles

chaotic_job. 👾 Resilience test helpers for Active Job

rbs-trace. RBS::Trace automatically collects argument and return types and saves RBS type declarations as RBS files or comments.

fast-mcp. A Ruby Implementation of the Model Context Protocol

graphql-anycable. A drop-in replacement for GraphQL ActionCable subscriptions. Works with AnyCable.

sorbet-eraser. Erase all traces of sorbet-runtime code

mission_control-jobs. Dashboard and Active Job extensions to operate and troubleshoot background jobs

boba. Custom tapioca compilers.

happy_queues. Companion information for my Rubyconf 2022 talk: "The secret to happy queues"

rails_standards. A developer's guide of practices to follow when building Rails applications.

rubocop-obsession. RuboCop extension focused on higher-level concepts, like checking that code reads from top to bottom

slidev. Presentation Slides for Developers

mysqld_exporter. Exporter for MySQL server metrics

rspec-sorbet-types. Sorbet typechecking support for RSpec

oaken. Speed up your test suite and have easy to maintain seeds. Replace slow factories & skip the maintenance burden of fixtures. Fast tests, clear datasets.

database_consistency. The tool to avoid various issues due to inconsistencies and inefficiencies between a database schema and application models.

factory_trace. Simple tool to maintain factories and traits from FactoryBot

migrate. Database migrations. CLI and Golang library.

annotaterb. A Ruby Gem that adds annotations to your Rails models and route files.

tech-radar. Visualizing our technology choices

server. A drop in replacement for geminabox written in Go

lhm. Online MySQL schema migrations

active_record-associated_object. Extract Collaborator Objects from your Active Records, a new concept called Associated Objects

online_migrations. Catch unsafe PostgreSQL migrations in development and run them easier in production (code helpers for table/column renaming, changing column type, adding columns with default, background migrations, etc).

spaced. Super simple and convenient way to isolate and namespace a collection of related methods

ruby-toolkit.nvim. Ruby tools for neovim

telescope-alternate.nvim. Alternate between common files using pre-defined regexp. Just map the patterns and starting navigating between files that are related.

activerecord-ejection_seat. Eject from an ActiveRecord model to a Sorbet T::Struct, or buckle back in.

sorbet-result. Adds T::Result as a basic, strongly-typed monad

actual_db_schema. Keep DB schema in sync across branches effortlessly. Install and use rails db:migrate as normal. The gem handles the rest automatically.

stork. 🔎 Impossibly fast web search, made for static sites.

rails_graph. Graph visualization for Rails applications

projections.nvim. A map to your filesystem. A Neovim plugin for fast session switching and project discovery.

rubocop-isucon. RuboCop plugin for ruby reference implementation of ISUCON

chat_gpt_error_handler. Ruby

moveline.nvim. Neovim plugin for moving lines up and down

automatic_namespaces. Modify Rails autoloading rules to treat all files in a package directory as belonging to a given namespace

copilot.lua. Fully featured & enhanced replacement for copilot.vim complete with API for interacting with Github Copilot

ruby-lsp-rails. A Ruby LSP add-on for Rails

magic_frozen_string_literal. easily add '# frozen_string_literal: true' comments to the top of all your project's Ruby files

navigator.lua. Code analysis & navigation plugin for Neovim. Navigate codes like a breeze🎐 Exploring LSP and 🌲Treesitter symbols a piece of 🍰 Take control like a boss 🦍

vim-agriculture. 🚜 Vim plugin to improve project searching with tools like ag and rg

prism. Prism Ruby parser

vscode-alternate-file. Switch to and create spec files for any framework in VS Code

next_rails. A toolkit to upgrade your next Rails application

LazyVim. Neovim config for the lazy

vim-galore. :mortar_board: All things Vim!

command-line-rust. Code for Command-Line Rust (O'Reilly, 2024, ISBN 9781098109417)

frum. A little bit fast and modern Ruby version manager written in Rust

im. Isolated Module Autoloader for Ruby

gem-compare. A RubyGems plugin that compares versions of the given gem

vim-helm. vim syntax for helm templates (yaml + gotmpl + sprig + custom)

lazy.nvim. 💤 A modern plugin manager for Neovim

validation_errors. Track ActiveRecord validation errors on your database

toggletasks.nvim. Neovim task runner: JSON/YAML + toggleterm.nvim + telescope.nvim

squasher. Squasher - squash your old migrations in a single command

dotfiles. My dotfiles for Neovim, Fish, tmux, Git and other stuff

vim-cheat40. A Vim cheat sheet that makes sense, inside Vim!

pear-tree. A Vim auto-pair plugin that supports multi-character pairs, intelligent matching, and more

the-ultimate-guide-to-ruby-timeouts. Timeouts for popular Ruby gems

vim-easy-align. :sunflower: A Vim alignment plugin

FTerm.nvim. :fire: No-nonsense floating terminal plugin for neovim :fire:

mason.nvim. Portable package manager for Neovim that runs everywhere Neovim runs. Easily install and manage LSP servers, DAP servers, linters, and formatters.

vim-visual-multi. Multiple cursors plugin for vim/neovim

vim-ruby. Improved syntax highlighting and indentation for Ruby

rails_drivers. Modularize your monolith without friction

refactoring.nvim. The Refactoring library based off the Refactoring book by Martin Fowler

nvim-surround. Add/change/delete surrounding delimiter pairs with ease. Written with :heart: in Lua.

nvim-bqf. Better quickfix window in Neovim, polish old quickfix window.

nvim-gomove. A complete plugin for moving and duplicating blocks and lines, with complete fold handling, reindenting, and undoing in one go.

awesome-neovim. Collections of awesome neovim plugins.

telekasten.nvim. A Neovim (lua) plugin for working with a markdown zettelkasten / wiki and mixing it with a journal, based on telescope.nvim

import.nvim. A safe require override with niceties

focus.nvim. Auto-Focusing and Auto-Resizing Splits/Windows for Neovim written in Lua. A full suite of window management enhancements. Vim splits on steroids!

trace_location. 🔍Help you get reading the huge open souce libraries in Ruby and trace its source locations

nvim-oxi. :link: Rust bindings to all things Neovim

rust-tools.nvim. Tools for better development in rust using neovim's builtin lsp

snippet-converter.nvim. Bundle snippets from multiple sources and convert them to your format of choice.

github-nvim-theme. GitHub's Neovim themes

hydra.nvim. Create custom submodes and menus

zoxide. A smarter cd command. Supports all major shells.

iswap.nvim. Interactively select and swap function arguments, list elements, and much more. Powered by tree-sitter.

diffview.nvim. Single tabpage interface for easily cycling through diffs for all modified files for any git rev.

Launch.nvim. 🚀 Launch.nvim is modular starter for Neovim.

cmp-plugins. nvim-cmp source for Neovim plugins

packs-rails. packs-rails establishes and implements a set of conventions for splitting up large monoliths.

code_ownership. A gem to help engineering teams declare ownership of code

proxy_record. Ruby

paquito. Utility classes to define optimized and evolutive serializers.

spec. The Ruby Spec Suite aka ruby/spec

neotest. An extensible framework for interacting with tests within NeoVim.

ftl-serializer. FTL (Faster Than Light) is a ruby serializer that is optimized for simplicity and speed.

dragonfly. A modern replacement for Redis and Memcached

syntax_tree. A Ruby language formatter written in Ruby

rails_semantic_logger. Rails Semantic Logger replaces the Rails default logger with Semantic Logger, so that Rails, your application code, and many common gems all log through structured logging instead of plain text.

Replibyte. Seed your development database with real data ⚡️

tower-lsp. Language Server Protocol implementation written in Rust

AstroNvim. AstroNvim is an aesthetic and feature-rich neovim config that is extensible and easy to use with a great set of plugins

neo-tree.nvim. Neovim plugin to manage the file system and other tree like structures.

magic-trace. magic-trace collects and displays high-resolution traces of what a process is doing

zsh-autosuggestions. Fish-like autosuggestions for zsh

dotfiles. Bootstrap neovim/zsh/wezterm environment. "Unix is an IDE."

solargraph-rails-init. A simple script to configure Solargraph to work with Rails

better-escape.nvim. Map keys without delay when typing

autocomplete. IDE-style autocomplete for your existing terminal & shell

nvim-completion. :zap: An async autocompletion framework for Neovim

kitty. If you live in the terminal, kitty is made for you! Cross-platform, fast, feature-rich, GPU based.

kitty-icon. An alternative MacOS application icon for the wonderful Kitty terminal emulator.

Lepton. 💻 Democratizing Snippet Management (macOS/Win/Linux)

vim-kitty. Vim syntax highlighting for Kitty terminal config files

move.nvim. Gain the power to move lines and blocks and auto-indent them!

vim-ultest. The ultimate testing plugin for (Neo)Vim

neogit. An interactive and powerful Git interface for Neovim, inspired by Magit

yode-nvim. Yode plugin for NeoVim

Neovim-from-scratch. 📚 A Neovim config designed from scratch to be understandable

packwerk-vscode. Packwerk extension for Visual Studio Code

memo_wise. The wise choice for Ruby memoization

yard-doctest. Doctests from YARD examples

dokaz. Use your documentation as a specification: parse and evaluate ruby code from markdown

ratonvirus. Rails antivirus made easy.

nvim-config. My neovim config files

fast. Find in AST - Search and refactor code directly in Abstract Syntax Tree as you do with grep for strings

unparser. Turn Ruby AST into semantically equivalent Ruby source

distant.nvim. 🚧 (Alpha stage software) Edit files, run programs, and work with LSP on a remote machine from the comfort of your local environment 🚧

kanagawa.nvim. NeoVim dark colorscheme inspired by the colors of the famous painting by Katsushika Hokusai.

startuptime.vim. Breakdown Vim's --startuptime output

circuitbox. Circuit breaker built with large Ruby apps in mind.

starship. ☄🌌️ The minimal, blazing-fast, and infinitely customizable prompt for any shell!

CosmicNvim. CosmicNvim is a lightweight and opinionated Neovim config for web development, specifically designed to provide a 💫 COSMIC programming experience!

lspsaga.nvim. improve neovim lsp experience

which-key.nvim. 💥 Create key bindings that stick. WhichKey helps you remember your Neovim keymaps, by showing available keybindings in a popup as you type.

glow.nvim. A markdown preview directly in your neovim.

nvim-spectre. Find the enemy and replace them with dark power.

dot. ☕️ My Dot Files

lightspeed.nvim. deprecated in favor of leap.nvim

trouble.nvim. 🚦 A pretty diagnostics, references, telescope results, quickfix and location list to help you solve all the trouble your code is causing.

lspkind.nvim. VS Code–style pictograms for Neovim completion items

slides. Terminal based presentation tool

mkdnflow.nvim. Fluent navigation and management of markdown notebooks

dotfiles. $HOME sweet $HOME

ripper-tags. fast, accurate ctags generator for ruby source code using Ripper

mocktail. 🥃 Take your Ruby, and make it a double!

zsh-autocomplete. 🤖 Real-time type-ahead completion for Zsh. Asynchronous find-as-you-type autocompletion.

vim-projectionist. projectionist.vim: Granular project configuration

nvim-config. My Vim Setup

async. An awesome asynchronous event-driven reactor for Ruby.

dotfiles-public. My personal dotfiles

nvim-cmp. A completion plugin for neovim coded in Lua.

LuaSnip. Snippet Engine for Neovim written in Lua.

lualine.nvim. A blazing fast and easy to configure neovim statusline plugin written in pure lua.

architecture-decision-record. Architecture decision record (ADR) examples for software planning, IT leadership, and template documentation

trace_id. Small class and helpers for distributed tracing in your Rails app

dashboard-nvim. vim dashboard

vim-plug. :hibiscus: Minimalist Vim Plugin Manager

nvim-lspconfig. Quickstart configs for Nvim LSP

github.vim. A GitHub colors scheme for neovim/gvim/vim

alba. Alba is a JSON serializer for Ruby, JRuby and TruffleRuby.

coc.nvim. Nodejs extension host for vim & neovim, load extensions like VSCode and host language servers.

routes_lazy_routes. A boot time booster for Ruby on Rails that defers loading the whole bloody routes so the app can spin up quickly 🤘

yaaf. Easing the form object pattern in Rails applications

pocky. A dependency graph generator for your packwerk packages

graphwerk. Graphwerk is a small Ruby gem that can generate a diagram of dependencies between packages within an application that's using Packwerk to enforce boundaries.

cloc. cloc counts blank lines, comment lines, and physical lines of source code in many programming languages.

debug. Debugging functionality for Ruby

sorbet-progress. Measure sorbet adoption progress

parlour. A type signature generator, merger and parser system for Sorbet and Ruby 3/Steep

iina. The modern video player for macOS.