Andrew Dunn

Things I’ve learned, noticed, tried, or wanted to remember.

Notes

A few places to start: reticulating splines with Claude, the field guides (the Gemini guide first), and how to write a CLAUDE.md.

2026

  1. Agentic standards field guide: instruction files, protocols, crawler rules, and paymentsEvery current agentic standard, from AGENTS.md and MCP to llms.txt and agent payments, with who made it, adoption numbers, and what to use by job. Checked regularly.
  2. ChatGPT field guide: models, plans, Codex, and pricesEvery current OpenAI model, ChatGPT plan, and tool, with prices and what to pick by job. Checked regularly.
  3. Claude field guide: models, plans, Claude Code, and pricesEvery current Claude model, plan, and tool, with prices and what to pick by job. Checked regularly.
  4. Things I saved in August 2026Links and tools that caught my attention in August 2026: new models, personal agents, operating patterns, SEO, AEO, and design.
  5. We rebuilt HelloGravel.com and went from 0 to 1,000 PRs in five monthsHow canaries, PostHog, Merge Boy, and teammates across roles turned a risky WordPress rewrite into more than 1,000 pull requests in five months.
  6. Open a second AI chat when you don't know what to askA beginner-friendly way to use one AI chat as a coach while another chat builds the thing you want.
  7. College football's local identity: what LSU's rosters showLSU roster geography shows local roots thinning as transfers grow. The story behind the data, with a link to explore teams on CFB Homecoming.
  8. Things I saved in July 2026Links and tools that caught my attention in July 2026: Fable setups, coding-agent loops, review constraints, and company AI rollouts.
  9. The hard part is still the ideaEddie Kim prototyped a whole new product line during a five-hour layover. The prototype was the cheap part.
  10. Things I saved in June 2026Matt Van Horn's agentic engineering hacks, Addy Osmani's Loop Engineering, and other June bookmarks.
  11. Things I saved in May 2026Links and tools that caught my attention in May 2026: agentic companies, agent harnesses, websites for robots, and the witness effect.
  12. Gemini field guide: models, plans, and pricesEvery current Gemini model, Google AI plan, agent, and creative tool, with prices and what to pick by job. Checked regularly.
  13. Things I saved in April 2026Articles, tools, and ideas I bookmarked in April 2026. AI agents, static sites, games, and things worth reading.
  14. The Renaissance had slop tooVerrocchio's workshop, copycat Mona Lisas, and what the messy reality of the Renaissance can teach us about the AI era.
  15. How I'm Building with AI in April 2026My current AI development setup: Claude Code, Codex, gstack for planning, and the tools that tie it all together.
  16. How to write a CLAUDE.md (with a real example)Where CLAUDE.md goes, what to put in it, and a starter you can copy. Includes my own global instructions for Claude Code.
  17. Things I saved in March 2026Articles, tools, and ideas I bookmarked in March 2026. Developer tools, Claude Code tips, and things worth reading.
  18. Things I saved in February 2026Mitchell Hashimoto on harness engineering, Boris Tane's Claude Code workflow, and other February bookmarks.
  19. Claude Code is reviving the fledgling screenshot industryI analyzed 8.5 years of macOS screenshots and found a hockey stick, a career history, and evidence of my August vacations.
  20. Reticulating splines with Claude: a city builder for AI agentsI built an open Micropolis platform, it hit Hacker News, and hundreds of AI agents showed up to play mayor. What I've learned so far.
  21. A dead simple markdown to PDF converterI built a single-file tool to turn markdown into clean PDFs. No install, no server, just open it in a browser.
  22. Vibe gaming: a weekend trying to get Claude to play SimCityI used exe.dev and a coding agent to teach AI how to play SimCity from my phone. A weekend experiment in vibe gaming.
  23. Things I saved in January 2026Articles, tools, and ideas I bookmarked in January 2026. AI adoption, startup lessons, and things worth reading.
  24. Pika Pile: A hierarchical kanban board with less featuresA hierarchical kanban board for managing multiple projects at once. Less features, more focus. Built for people juggling too many things.
  25. When I couldn't make the report, I made the toolWhen the reporting tool couldn't do what I needed, I described what I wanted to Claude and had a working app by end of day.
  26. Is Mardi Gras early this year?Mardi Gras 2026 was February 17: early in a two-way split, middle in three. In 2027 it's February 9, early either way. See the dates and cutoffs.
  27. How to propose a new process without making everyone hate youHow to change a process you don't own. Coffee conversations, crappy mockups, and getting buy-in before you need it.

2025

  1. The Holy Trinity of Startup Metrics: LTV, CAC, and TAMA practical guide to LTV, CAC, and TAM. What they mean, how to calculate them, and why investors care about all three.
  2. How to start running when you'd rather do anything elseA tactical guide to starting a running habit when you hate running. Gear, apps, pacing, and the mental tricks that got me out the door.