Build log: a billing portal in one week with Claude Code and Codex
Five days, two agents, one working Stripe billing portal: what was delegated, what broke, what it cost ($61.40 all-in), and the day everything went sideways.
9 matches across problems, recipes, configs, comparisons, and discussions.
Five days, two agents, one working Stripe billing portal: what was delegated, what broke, what it cost ($61.40 all-in), and the day everything went sideways.
Mine grew to 600 lines and the agent ignores most of it. Time to talk about what earns a slot in the most expensive real estate in your repo.
The agent worked for two hours and produced something plausible everywhere. Rubber-stamping is negligence, line-by-line is a full day. What's the actual workflow?
Same 12 tasks I run on every release. Fable took 9, Opus took 2, one tie — but the interesting part isn't the score.
Not benchmarks, not demos — daily driving. Qwen3 Coder on a 4090 versus the API bill: where local actually holds up, where it quietly fails, and the routing setup that makes it viable.
Compaction ate my constraint again. Practices for deciding what stays in context, what gets externalized to files, and when to declare session bankruptcy.
Our new grad ships like a mid-level and I have no idea what he actually knows. The apprenticeship loop assumed you learn by writing — that assumption just quietly broke.
Show me what actually works. Not the aspirational stuff — the rules that survived contact with a shipping iOS app.
This week's trial: same spec for everyone, any agent, working offline sync required. 34 submissions and counting. Due in 3 days.