Skip to content

What I do in my free time Posts

Schema-valid isn’t enough. A second LLM validation layer in Ruby

Demo: github.com/justi/ruby_llm-contract_demo April 2025: Cursor’s support chatbot, named Sam, told a customer that logging in from two devices broke company policy. No such policy existed. Reddit and Hacker News picked it up within an hour and people started cancelling subscriptions. A year earlier, a Canadian tribunal ordered Air Canada to…

Handmade Blue Black Nacklace

In photos, you can see this necklace in the new jewellery display that I’ve bought in Lisbon, Portugal. There is also my new logo 🙂 To make this blue-black necklace I’ve used: SuperDuo’s Tohos from 15o to 6o Drops Stainless steel magnetic clasp

Modular Diamonduo Bracelet

This bracelet has five modules, each of them was built from arranged in rosette DiamonDuo beads. I’ve decided on an AB color and got a glamorous blue shade view. I’ve also used black miniDuos and stainless steel magnetic clasp.