Posts

Give LLM agents shell access without risking your host system. A practical libvirt guide covering VM creation, snapshots for safe experimentation, and remote access options.

The month AI agents got social, plus FOSDEM, cURL's war on slop, ancient pumps, hard-won lessons, and delightful internet corners.

Books, writings, projects, AI tips, and personal reflections from 2025.

AI coding assistants and other devtools can steal your credentials and data. Here's how to run them safely in isolated VMs using Lima on macOS/Linux.

A quick note on how to use the GitHub API to find user contributions within a specific timeframe.

A cheat sheet for working with TLS certificates: creating and inspecting keys, certs and CSRs, signing and validating, and testing TLS connections.

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). Perhaps you find some of it useful or interesting for your own setup.

Collaboration with Mike Neuder on MEV-Boost bid cancellations and their downsides.

About building Ethereum L1 blocks inside SGX, and landing them on mainnet.

Running geth inside SGX at Flashbots - our experience, learnings and code.

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

To interact with Ethereum smart contracts in Go programs, you need bindings for the specific type of contract. This post is a quick guide for generating these bindings from various sources: Manually …

This is a guide for starting a TypeScript project in 2021 with modern tooling. TypeScript 4 Optionally esbuild to bundle for browsers (and Node.js) Linting with typescript-eslint (tslint is …

PDFx is a tool to extract text, links, references and metadata from PDF files and URLs. Thanks to several contributors the project received a thorough update and was brought into 2021. The new …

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). Use micropython-ctl to quickly …

logzero is a simple and effective logging library for Python, supporting colors, logfiles, syslog, JSON logs and much more.

Oh wow, it’s been about two years since my last post, and oh boy were those eventful! Most notably, I’m now a father of two 🐥🍼. Happy, busy, and frequently getting up way too early for my liking. 😂 …

logzero is a simple and effective logging module for 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 …