Chris Hager

This is a guide for isolating LLM agents in virtual machines, using libvirt and virsh on Linux servers.

January 2026: the month AI agents got their own social network and started forming micronations.

This post is a look back at 2025: projects, writings, code, books, and a few thoughts on AI, social media, and life.

AI coding assistants, npm, pip, and other development tools can run arbitrary code and scripts on your machine, potentially stealing SSH keys, API tokens, wallet keys, sensitive credentials and other private data without you noticing.

I needed needed to find all public GitHub repositories a user has contributed to within a specific timeframe, and wanted to share - and record for myself - the API query I learned.

https://collective.flashbots.net/t/tls-certificates-know-how-quick-reference/5292

How I setup and use my computer and tools for development.

A collection of notes, tips and tricks about how I setup and use my terminal (iTerm2) and shell (Bash).

Moved to https://ethresear.ch/t/bid-cancellations-considered-harmful/15500

Moved to https://writings.flashbots.net/block-building-inside-sgx

Moved to https://writings.flashbots.net/geth-inside-sgx

This post is about the paper “Improving security for users of decentralized exchanges through multiparty computation”, by Robert Annessi and Ethan Fast.

To interact with Ethereum smart contracts in Go programs, you need bindings for the specific type of contract.

This is a guide for starting a TypeScript project in 2021 with modern tooling.

PDFx is a tool to extract text, links, references and metadata from PDF files and URLs.

Moved to /2021/04/starting-a-typescript-project-in-2021/

I’m happy to introduce MicroPython-Ctl: a TypeScript library for talking to MicroPython devices (such as ESP32/8266, Raspberry Pi Pico, Pyboard, WiPy, and many more).

logzero is a simple and effective logging library for Python, with colored stream output, logfile, syslog, JSON formatting and much more: https://github.com/metachris/logzero After a really busy period with my second 🐣, I start to find a little bit of time

Oh wow, it’s been about two years since my last post, and oh boy were those eventful!

Redirecting to https://medium.com/proof-of-working/city-of-zion-project-report-june-to-august-2018-ea6fa87565ea

Redirecting to https://medium.com/proof-of-working/coz-first-dapps-competition-dapp-review-3a6b284afaef

Redirecting to https://medium.com/proof-of-working/how-to-build-an-ico-on-neo-with-the-nex-ico-smart-contract-template-1beac1ff0afd

I’ve just published logzero, a small Python package which simplifies logging with Python 2 and 3.

This post shows how to write tests for Vue.js plugins and extensions by creating Vue.js instances, changing state and validating transformation and expected errors, to continuously verify that everything still works after updates, refactorings and merging…

This post shows how to automate building and deployment of Hugo static websites to GitHub Pages using Travis CI.

Last week I was visiting CloudNativeCon and KubeCon Europe 2017 in Berlin for two days of conference packed with talks.

Snapchat is going public!

Everyone loves a good syntax highlighting.

Node.js 7.x is the current stable release of the Node.js, which is actively maintained in parallel to Node.js 6.x Long-Term Support (LTS).

Node.js 6.x is the current Node.js long-term support (LTS) release, with Node.js v6.9.4 being the most recent release as of time of writing.

TypeScript 2.1 introduced a number of breaking changes, among them that “Extending built-ins like Error, Array, and Map may no longer work”.

The Chaos Computer Congress is Europe’s leading hacker and tech community conference, taking place annualy in Hamburg, Germany between Christmas and New Year.

Peter Norvig, the famous American computer scientist and Director of Research at Google Inc., participated in this year’s Advent of Code (a series of small programming puzzles), and shared his experience in an interesting blog post.

A thread pool is a group of pre-instantiated, idle threads which stand ready to be given work.

This is a simple guide on installing the latest Qt (currently 5.6) and PyQt5 on Mac OS X 10.11 (El Capitan) and Linux with Python 3.4, inside a virtual environment.

PDFx is a free command-line tool to extract references, links and metadata from PDF files.

Mandrill, the beloved-by-many transactional email service, recently announced that it will switch to a paid-only model under the MailChimp umbrella.

This is a simple and effective method how to serve Wordpress pages blazingly fast: produce static HTML files with WP Super Cache, and serve them directly with nginx.

Let’s Encrypt is a new certificate authority backed by Mozilla, Akamai, EFF, Facebook and others, which provides free, automated SSL/TLS certificates.

In this tutorial we’ll be using py2app to create a standalone OSX application from a Python 2 or 3 source code with a simple Tkinter user interface.

String encoding and decoding as well as encoding detection can be a headache, more so in Python 2 than in Python 3.

Machine learning algorithms regularly utilize GPUs to parallelize computations, and Amazon AWS GPU Instances provide cheap and on-demand access to capable virtual servers with NVIDIA GPUs.

Great talk and engaging live coding session “Python Concurrency From the Ground Up” by David Beazley at PyCon 2015!

Node.js v5.x is deprecated.

I just released PDFx version 1.0, a Python tool and library to extract metadata and URLs from PDFs, and to automatically download all referenced PDFs.

Node.js v4.x is deprecated.

This post is about using Retrofit 2.0 (beta) to consume HTTP based APIs.

Another DMCA takedown of one of my Android apps.

Just a year ago Paul Irish and several contributors started working on html5-boilerplate, a popular repository of boilerplate and best practices for creating cross-browser compatible, html5-enabled websites.