Nothing in (AGENTS|CLAUDE).md, no Cursor style rules. Just some skills for Jira/Confluence, CI, and Playwright.

Haven't bothered doing any extra customisation in Claude Code or Codex as I don't really trust those things to apply consistently. And if you can run your CI steps locally before you push you don't need to tell an agent to remember it.

That said I've been playing with pi today and given how stripped down it is I've used it as a sandbox for customisation. Still, I haven't gone quite as far as laying down project level instructions. More that Claude Code in particular is quite heavy, and so it its prompt, and adding stuff like rich integration with GitHub and SourceHut (CI status, active branch or PR) seems comparatively trivial in pi.

Only thing left to do is switch out ghostty for the time being as it's misbehaving. Laptop hot to the touch even after idling overnight.

I’ve tried quite a few, from oh-my-openagent’s gargantuan hooks+plugin system to minimal add-i like wozcode, and I’ve been most impressed by that (wozcode) and oh-my-pi. I get that pi is supposed to be roll-your-own but I think OMP’s config is a great starting point; pi removed all the fluff and OMP added just enough orchestration and tooling back in to take things to the next level. Wozcode is great if you like CC because it doesn’t mess with the fundamentals, it just adds things like batching for efficiency—CC’s system prompt alone is absurd.

Caveat: I’m a data scientist/researcher, not a professional SWE, so take my experiences with a grain of salt. I’m just a python monkey most of the time

My Claude.md is a maybe 30 lines. I only adid something if it repeatedly does something that annoys me.

It still tends to do those things, but maybe 40% less.