Notes on Mar 12, 2026

I check X, Hacker News, and blogs every day. Recently, too many things have been competing for my attention. Whenever something looks worth revisiting, I take a screenshot first, so my photo album has quietly turned into a messy reading inbox.

I have not read or organized all of these properly yet, so this note is just a first pass: a way to get the links out of my album, lay them out in one place, and start clearing my head.

Coding agents

• Harness engineering
  • Effective harnesses for long-running agents, on Anthropic’s blog
  • Harness engineering: leveraging Codex in an agent-first world, on OpenAI’s blog
  • Investigating how Codex context compaction works
  • The Anatomy of an Agent Harness
• Comparisons of agentic tools
  • State of Agentic Coding Tools — March 2026
  • Claude Code vs. Codex: The Definitive Guide
• Andrej Karpathy’s posts on AI-assisted programming
  • I’ve never felt this much behind as a programmer (Dec 27, 2025)
  • A few random notes from claude coding quite a bit last few weeks
  • 1 year anniversary of vibe coding, and introducing a better name: “agentic engineering” (Feb 5, 2026)
  • It is hard to communicate how much programming has changed due to AI in the last 2 months (Feb 26, 2026)
  • We’re going to need a bigger IDE (Mar 12, 2026)
• Agentic engineering practices
  • MCP is dead. Long live the CLI, and another post from Karpathy on X about this topic

Products

• Cursor
  • The third era of AI software development
  • Forbes: Cursor Goes To War For AI Coding Dominance
• The OpenClaw hype (I haven’t tried anything out yet)
  • Karpathy’s post on X about it
  • Perplexity Computer, and Personal Computer
• Ghostty
  • Ghostty 1.3 Release notes

Programming and frontend

• The Missing Semester of Your CS Education (Discussion on Hacker News) (revised for 2026)
• Advancing Python typing, a new PEP by Vercel
• Details that make interfaces feel better
• Evolving the Node.js Release Schedule

Other

• AI is a 5-Layer Cake, by Jensen Huang
• The Brand Age, Paul Graham’s new essay