Oliver Siegmar

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

andrej-karpathy-skills. A single CLAUDE.md file to improve Claude Code behavior, derived from Andrej Karpathy's observations on LLM coding pitfalls.

Mole. 🐹 Clean, uninstall, analyze, optimize, and monitor your Mac from the terminal.

claude-code. Claude Code is an agentic coding tool that lives in your terminal, understands your codebase, and helps you code faster by executing routine tasks, explaining complex code, and handling git workflows - all through natural language commands.

superpowers. An agentic skills framework & software development methodology that works.

commons-io. Apache Commons IO

Container-Compose. A docker-compose like tool for Apple Container

jlo. Rust

analytics. Open source, privacy-first web analytics. Lightweight, cookie-free Google Analytics alternative. Self-hosted or cloud.

slf4j. Simple Logging Facade for Java

logback. The reliable, generic, fast and flexible logging framework for Java.

java-new-features. Exploring Java new features from 8 to 27

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.

jmh. https://openjdk.org/projects/code-tools/jmh

jspecify. An artifact of fully-specified annotations to power static-analysis checks, beginning with nullness analysis.

ses-sync-action. Sync email templates to Amazon Simple Email Service (SES)

neohtop. 💪🏻 Blazing-fast system monitoring for your desktop (built with Rust, Tauri & Svelte)

astro-shield. Astro integration to enhance your website's security with SubResource Integrity hashes, Content-Security-Policy headers, and other techniques.

JsonUnit. Compare JSON in your Unit Tests

FastCSV. Fast, lightweight, and RFC 4180 compliant CSV library for Java. Zero dependencies, ~90 KiB. Trusted by Apache NiFi, JUnit, and Neo4j.

Java. All Algorithms implemented in Java

tabular-data-interchange-format. Home of the Tabular Data Interchange Format (TDIF)

starlight-openapi. Starlight plugin to generate documentation from OpenAPI/Swagger specifications

s3-publisher-action. GitHub Action to publish files to S3 with glob-based Cache-Control headers, modification detection, and multipart upload support

wrapper-validation-action. Gradle Wrapper Validation Action

starlight. 🌟 Build beautiful, accessible, high-performance documentation websites with Astro

terraform-provider-aws. The AWS Provider enables Terraform to manage AWS resources.

configure-aws-credentials. Configure AWS credential environment variables for use in other GitHub Actions.

picocli. Picocli is a modern framework for building powerful, user-friendly, GraalVM-enabled command line apps with ease. It supports colors, autocompletion, subcommands, and more. In 1 source file so apps can include as source & avoid adding a dependency. Written in Java, usable from Groovy, Kotlin, Scala, etc.

jacoco. :microscope: Java Code Coverage Library

flyway. Flyway by Redgate • Database Migrations Made Easy.

gradle. Adaptable, fast automation for all

tailwindcss. A utility-first CSS framework for rapid UI development.

spring-security. Spring Security

spring-framework. Spring Framework

junit-framework. ✅ The programmer-friendly testing framework for Java and the JVM

assertj. Fluent testing assertions for Java and the JVM

astro. The web framework for content-driven websites. ⭐️ Star to support our work!

awesome-java. A curated list of awesome frameworks, libraries and software for the Java programming language.

amazon-ecs-deploy-task-definition. Registers an Amazon ECS task definition and deploys it to an ECS service.

amazon-ecs-render-task-definition. Inserts a container image URI into an Amazon ECS task definition JSON file.

amazon-ecr-login. Logs into Amazon ECR with the local Docker client.

setup-buildx-action. GitHub Action to set up Docker Buildx

metadata-action. GitHub Action to extract metadata (tags, labels) from Git reference and GitHub events for Docker

spotbugs. SpotBugs is FindBugs' successor. A tool for static analysis to look for bugs in Java code.

pmd. An extensible multilanguage static code analyzer.

checkstyle. Checkstyle is a development tool to help programmers write Java code that adheres to a coding standard. By default it supports the Google Java Style Guide and Sun Code Conventions, but is highly configurable. It can be invoked with an ANT task and a command line program.

spring-boot. Spring Boot helps you to create Spring-powered, production-grade applications and services with absolute minimum fuss.

shell-plugins. Seamless authentication for every tool in your terminal.

aws-mfa. Manage AWS MFA Security Credentials

java-design-patterns. Design patterns implemented in Java

cli. 🥧 HTTPie CLI — modern, user-friendly command-line HTTP client for the API era. JSON support, colors, sessions, downloads, plugins & more.

mail-for-good. An open source email campaign management tool for nonprofits

terraform. Terraform enables you to safely and predictably create, change, and improve infrastructure. It is a source-available tool that codifies APIs into declarative configuration files that can be shared amongst team members, treated as code, edited, reviewed, and versioned.

nginx-proxy. Automated Nginx Reverse Proxy for Docker