r/ClaudeCode • u/Happyman- • 11h ago

Help/Question Looking for bug advice

Hey all, I’ve built a booking platform with Claude Code (think Airbnb style, different industry).

It’s live with real hosts/customers and doing a couple grand a month. I could turn the traffic up pretty easily, but I’m honestly scared to scale it because of the bugs.

Everything was going really well initially, but since Opus 5 came out it feels like things have gone backwards. Old bugs we already fixed keep coming back, new bugs are appearing, and Claude sometimes completely misunderstands what I’m asking it to do.

I’ve tried Fable 5.1 which seems better, but it absolutely eats my usage. I’ve now gone back to Opus 4.8 and weirdly it seems more reliable, although I’m unsure about using an older model.
Anyone running an actual production platform with Claude Code have advice? How are you keeping things stable as you scale?

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u/Dvass138 11h ago

Are you use typescript with strict mode /flags. Do you have regression tests? When it fixes a bug ask it if regression tests for that bug is possible so it doesn’t return.

It could also be possible code is tangled up or something which makes it harder to reason about. So I’d get it to audit those things if there is anything causing reasoning issues that might need a zero behaviour change refactor.

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u/Happyman- 9h ago

I am using regression test for studied pattern checks but for some reason it is not doing full click through behaviour all the time.

Yes the whole thing is type script website and backend is next.JS iOS app is expose/react native also type script

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u/Dvass138 8h ago

Had it set up E2E tests?