Pi: A coding agent for engineers who own their tools
Claude Code, Codex, OpenCode - great places to start, not best places to finish. Pi is the thin harness that gets out of your way. Here's why experienced engineers should pay attention.
Alexander Holbreich
Everything becomes a little different as soon as it is spoken out loud.
Latest posts
tl : a task ledger (cli) for humans and coding agents
I built a Git-native task ledger to coordinate work between myself and AI agents. Here is how it works, why I made it, and what the agent handoff looks like in practice.
Six weeks with coding agents
A personal note on my first real weeks with coding agents: OpenClaw, Codex, Claude Code, Pi, too many tokens, and a surprising amount of shipped code.
JSON Web Tokens are made for Microservices
Introduction to JSON Web Tokens for beginners, with Java examples and microservice architecture context
Beads: issue tracking for agent work
My notes on using Beads/bd as an issue tracker for AI-assisted coding
GRUB cheat sheet
Practical GRUB, Fedora BLS, kernel arguments and UEFI boot notes I keep forgetting.
Proper agent names with Beads
Small shell helpers for giving Claude, Codex, Gemini, Pi and human roles distinct BEADS_ACTOR names.
How I migrated this blog to Astro with Codex
Notes on migrating the old Hugo article archive into this Astro blog together with Codex, with bd as the task tracker and guardrail.
Developing with Telepresence
Reflections on using Telepresence (v2) to bridge the gap between local development and Kubernetes clusters.
Composable Architecture
Composable Architecture, DXP, Headless CMS, API-first, MACH, and Cloud Native as parts of a modern architectural strategy.
JWTs in 2026: useful, but not a default
Practical notes on when JWT access tokens make sense, how to validate them, and when opaque tokens are the simpler architecture.
Architecture Decision Records: A Tool for Experienced Engineers
Architecture Decision Records (ADRs) are lightweight documents that capture architectural decisions along with their context and consequences. Why should Engineering Teams combine ADRs with the Advice Process.
Hardware Log
Some HW notes
Upgrading Fedora Linux
Step by Step Fedora Linux Upgrading Guide
JDK 21: Virtual Threads
An introduction to JDK 21 virtual threads and practicals examples
(Typical) journey towards full GitOps
Description of a typical journey towards the GitOps with Flux
Blog with Hugo
How I switched from Ghost Blog to Hugo and how you can do it too.
How to setup EKS on AWS with terraform
How to set up AWS EKS Kubernetes cluster with Terraform, by DevOps expert
Kube-state-metrics 1.8.0 - all metrics docu
Listing of Kube-state-metrics with comments. For kube-state-metrics 1.8.0
Upgrading Fedora Linux
Fedora Linux upgrading guide: Step by Step
Installing Filebeat for Kubernetes Logs
Setup of Filebeat on a Kubernetes cluster for logs scraping
Installing Logstash on Kubernetes
Setuping Logstash on a Kubernetes cluster - The L in the ELK stack
Open Distro for Elasticsearch
Elasticsearch Open Distro on AWS vs Elasticsearch from Elastic
Terraforming of the AWS: Getting started
Terraforming of the AWS: Getting started set up AWS cloud Resource with terraform
Services in systemd
Listing and details to services in Linux Systemd
Docker components explained
Docker components explained: DockerD, Containerd, runC, containerd-ctr, containerd-shim
Elasticsearch: Working with Indices
Elasticsearch: Explaining clustering and indices
Internal data structures of Elasticsearch
Review of the Elasticsearch's internal data structures. A tutorial
Elasticsearch cluster configuration: What i've learned
Elasticsearch cluster configuration: Best practices
Kubernetes on Ubuntu
Installing Kubernetes on Ubuntu Linux: Set by Step Guide for entry level
Thoughts on Elasticsearch
Elasticsearch introduction and review
How to cook Jenkins in 2017
Jenkins installation and configuration with Docker
Upgrading debian Jessie to Stretch
Upgrading debian Jessie to Stretch: Best practices
Docker and Moby
What is Docker and what is Docker Moby
Terraforming the Google Cloud
How to setup cloud resources in the Google Cloud with terraform
Side notes while terraforming AWS
Terraforming of the AWS cloud: Side notes
AWS automation
Review of AWS Cloud automation tools: Terraform, Ansible & Cloudformation
The Serverless Compute Manifesto
The Serverless Compute Manifesto: The Details
Kubernetes with CoreOS on AWS
Kubernetes installation with CoreOS Nodes on the AWS Cloud
List of Container Management Systems
List of Container Management Systems in 2016
AWS for Docker containers: first impressions
A Review of AWS for Docker containers in 2016.
How modularity enables Agility
Article exploring the concept of modularity in software system design and shows how it enable your organisation to be more agile
My first public ansible role
Writing own Ansible role for maven
Golang: How to start
Golang. How to start guide for beginner
Do more Ansible
Introduction to Ansible DevOps tool
Message Authentication
Cryptographic Message Authentication explained in details. Suitable for Beginners with Java examples
Symmetric-key cryptography
Symmetric Cryptography explained in details. Suitable for Beginners with code examples
Cryptographic Hash Functions
Introduction to Cryptographic Hash Functions. Suitable for Beginners. Examples included
Cryptography basics
Cryptography basics explain. Good Read for beginners
Time to start playing with Angular 2.0
Introduction to Angular 2.0 a Javascript, TypeScript Web Framework