Day 9 opened with revenue passing R$4,673.87 in email marketing sales and a promise: talk less, execute more. Guilherme showed what he'd finished in the early morning — a voice assistant named Jarvis, able to see the camera, read the screen, search the web, pull YouTube video transcripts, and operate Active Campaign by voice command. The proof of concept came live: he asked Jarvis to read a news story about Gabriel Jesus and Palmeiras, turn it into an email with the names of whoever was watching the stream, review the text (cutting a "Christmas break" mention that made no sense), and send the campaign to the test base. It worked, and the email arrived.
From there the stream turned into a real-time stress test. Jarvis got names in chat wrong, ignored viewers' questions, had its YouTube transcription tool break constantly, and, in a moment of comic tension, got accused live of suffering a "prompt injection" for simply not responding to whoever messaged it. It also consistently refused to drop its formality and tell jokes when asked — keeping the personality as a hard rule, not a suggestion. The audience suggested even selling a R$50/month Jarvis subscription, but the idea got scrapped on the spot for not connecting to the project's real goal: selling R$1 million through email marketing.
The day's strategic turn was deciding Jarvis wouldn't just be a backstage curiosity, but the foundation of a proper operating system — the interface that would let anyone (email manager or not) operate marketing tools by voice and text, without needing to sit in front of a computer. The name Jarvis got dropped once they discovered it's already a Blackberry trademark; the team searched for alternatives live until landing on Overclock, and the domain overclock.sh got bought on the spot, live, for R$250.
The rest of the stream was foundational work, without big wins: database setup (Supabase) for the new project, an attempt to clone a landing page using a site-cloning skill found on GitHub Trending, and a long, frustrating investigation into using a session (instead of an API key) for open cloud/Claude to save tokens by sharing a single session across multiple agent "employees." The connection was partially solved by the end, but without the desired polish.
The stream closed without a spectacular win, but with the central argument reinforced: Email Hacker AI isn't a SaaS, it's a vertical agent that takes over the repetitive work of a Brazilian email marketing manager — and Overclock was born right there, on day 9, as the interface that should carry that operation off the computer.