Same task every month? Make it a Claude skill
A skill saves the steps and templates for one repeated job. We tested one with a fictional freelancer's monthly pack for their accountant, and a person still checks the result.
Read the note →A notebook on AI, automation, finance & learning
Thinking out loud about AI, automation, finance and learning.
Practical, tested, no hype. Real examples, explained step by step, so you can try them yourself.
Claude Code mods for small changes to your workspace
See how Token Weather displays context use and how a custom panel can put your tasks beside the chat.
Stop treating AI like a smart chat. Run it like a company.
Give every agent a clear role, let a main agent coordinate the work, keep irreversible decisions with you, and bring in the whole team only when the task is worth the extra tokens.
Cheaper tokens can mean a bigger bill
Choose a model that can do the job, tune its thinking effort, and compare the cost of the completed task. A lower token price is only part of the bill.
Save the context: two files, one habit
Keep the rules, the unfinished work and the reasons behind your decisions in your project folder. Then start a new AI chat with a clear place to pick up.
7 AI words, in plain English
Prompt, context window, token, RAG, API, MCP and Markdown. Each one explained in a sentence, with an everyday picture and what it means when you use AI.
From chat to code, in four steps
The code button in ChatGPT and Claude lets the AI work with a folder on your computer, and you don't write a single line. We ran the same request in both apps: same folder, same €1,026 quote, and both asked before sending.
Who's behind the corner
Alejandro Biurrun
He works where finance, processes and technology meet: financial foundations for growing companies, an ERP connected to the business, and AI with human judgement. The rigour comes from seven years in a family office.
The Thinking Corner is where he tests things in the open and writes down what works.
psst Short reels on Instagram, longer notes here.