Essays & observations
Notes.
Notes are essays and observations from building with AI: ideas to think through, lessons learned, and perspectives to consider.
- Four Agent Blueprints You Can Run in Under 80 LinesTool-bloat routing, eval-driven development, agentic ETL, and a code-verifier loop — four tiny repos you can run offline, and the one sentence underneath all of them: let the model do the single fuzzy thing it's good at, wrapped in deterministic code you can trust.
- AI Agents Work. The Data Doesn't.A prediction for the next six months in AI
- State of OSS AI, Spring 2026Hugging Face's Spring 2026 report — US share of open-source AI downloads dropped from 70% to 37%. China hit 41%. The long tail collapsed. Your 2024 defaults are stale.
- The /goal command — 11 days, 3 tools, one primitiveCodex shipped /goal on April 30. Claude Code shipped it on May 11. Anthropic's announcement hit 606K views in 24 hours. The pattern that just became industry consensus.
- Why I'm redesigning Brain DripA note on the move from rounded warm cards to editorial paper — and why the reading experience has to come first if I'm going to actually write here.
- Airbnb's 60% playbook60% of new code at Airbnb is AI-written, Brian Chesky said on the Q1 2026 earnings call. The number is real, the framing is misleading, and the playbook to copy is the three conditions that made it possible.