Renan Spatin

@rwspatin

Software architect building AI agents & open-source tools. 7+ years in banking, payments & crypto. Sharing what I build and learn. Catholic 🇻🇦

renanspatin.com

Joined December 2014

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Renan Spatin
@rwspatin
Oct 1
Seeing a lot of introductions here, so here’s mine: I’m Renan 🇧🇷 I graduated in Law and Information Systems simultaneously, later completed an MBA in Software Architecture, and I’m currently finishing a postgraduate program in Leadership & Management at FGV. I also have a
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Renan Spatin
@rwspatin
Nov 12
Agents can rewrite a legacy system in a week. The rewrite was never the hard part. Proving it matches the old one is. With money, the bar is parity to the cent: same inputs into both, diff every output, cut over only when the diff is empty. What's your parity test?
Renan Spatin
@rwspatin
Nov 10
An AI agent found 57,897 vulnerabilities in under a week. Finding them was never the hard part. In a bank, every one of those fixes still needs: • someone other than the author to approve it • evidence it was tested • an audit trail a regulator can follow • a rollback plan Agents didn't remove the bottleneck. They moved it from finding to approving. Who approves agent-made patches on your team?
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Renan Spatin
@rwspatin
Nov 10
Agents got much faster at writing code. Review didn't. Generation is cheap now. Verification is the job. How are you reviewing agent output at this speed: tests, a second model, recorded demos, or still reading every diff?
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Renan Spatin
@rwspatin
Nov 9
Coinbase's CEO described his new setup this week: lead agents for each area, and every review landing in one queue with screenshots and a video demo. That's the part most agent workflows skip. The model writes the code, but nobody records what it actually did on screen. That's why I built agentic-media-kit: so the agent can capture the running UI and cut that demo itself.
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Renan Spatin

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