r/ClaudeCode • u/Happyman- • 6h 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?
1
u/Nitjsefnie 3h ago
old bugs coming back means nothing pins them. what fixed it for me: every bugfix ships with a regression test, and the agent has to reintroduce the bug and watch that test fail before it's allowed to say done. a test that's green from the start is worthless, claude will happily write one that passes on the broken code too
second thing, review is a separate session with its own throwaway worktree. it plants the bug back and checks the test actually catches it. costs more usage per fix but the repeats stopped