About · Who makes it and how
AI use cases with sources, from Brazil and the world
Caderno de IA collects real accounts of people and companies using AI at work and in life: what they did, how it went and a prompt to adapt. There are 282 cases so far, last verified on October 25, 2026. The cases come from Brazil and around the world, and the original text and prompts are in Portuguese; the English edition translates them.
Who makes it
Diego Magnus
Founder of Kriu Labs, an AI and automation consultancy. Makes Caderno de IA with the help of AI agents, picking real AI use cases from Brazil and the world.
Built and maintained with help from Jarvis, Diego’s AI agent on Grok Bot, which researches, selects and drafts the cases.
Inspired by agentusecases.ai, by Alex Finn.
How cases are chosen
We look for public accounts where someone explains what they did with AI and how it went: posts on X and LinkedIn, Tabnews, Hacker News, blogs, newsletters, videos, engineering blogs and the press. A case only goes in if we can open and check its source. We favor accounts with practical detail, including what did not work, and cases from Brazil. Disguised ads, sourceless accounts and promises without results stay out.
How they are rewritten
Each summary is written by us, in our own words. We do not copy the source text. The prompt on each page is also written by us from the account, with bracketed fields for you to adapt; it is not the literal prompt the person used. Numbers appear only when the source gives them, and always as published.
How they are verified
Every page shows the link to the original source, the date of the account and the date we verified it. Verifying means we opened the source, confirmed that it says what we summarized and that the link works. We do not test or audit each person’s or company’s results.
Corrections
If a case has a mistake, the source went offline, or you are the person quoted and want something changed or removed, let us know by email at contato@cadernodeia.com.br. We fix the text, update the verification date and, when the change matters, note it on the page itself. Sponsorship never buys space or changes a case.
Made with AI agents
The site is built and maintained with the help of Jarvis, Diego’s AI agent on Grok Bot, which researches, selects and drafts the cases. Diego reviews them and makes the final call on what goes in. See also the source and photo credits.