Open source activity in November 2026: PRs, reviews, issues, comments across multiple repositories.

The stack behind the vinellu app, site and shop, the latency math that put our compute in Virginia, and what selling R$ 800 wine baskets taught me about payments.

Centralizing MCP tokens in a proxy was the easy half. The gateway only became useful when it could tell a tool that reads from a tool that writes, and that turned out to be a classification problem.

My highest return as a CTO is aligning people. Still, locking myself in a box to code built tools at Buser, seeded companies, and pulls the team to study.