Claude Opus 4.7
The error handling in `processOrder` swallows DB exceptions silently — line 47. Either let it bubble or log with stack trace. Also, the price calculation has a subtle floating-point issue: round to cents before persisting.
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Review this Go code for the order-processing endpoint. Look for bugs, race conditions, and anything that would fail in production at scale. [diff omitted]
GPT-5.5
Three things: 1. `validate()` is called twice — once in the controller, once in the service. Pick one. 2. The transaction wrapping is incomplete; if `audit_log` insert fails the order still commits. 3. Variable name `tmp` on line 89 — give it a real name.
Gemini 3 Pro
Concurrency concern: this isn't safe under simultaneous orders for the same user. The check-then-update on `inventory` needs a row lock or a CAS-style update. Reproducible with two requests within ~10ms.
Grok 4.2
LGTM mostly. Two nits: 1) the timeout value of 30s feels arbitrary — pull from config. 2) Comment on line 52 says "TODO: handle Stripe webhook" but the code below it does handle it. Stale comment.
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