01
Logic & correctness
Traces variables and control flow across the diff to catch null/undefined paths, off-by-one errors, incorrect boundary conditions, and state that can go negative, undefined, or out of range — the class of bug that passes every linter.
02
Security review
Flags injection risk, unsanitized input reaching a query or shell call, secrets committed in plaintext, and auth checks that got dropped somewhere between the old code path and the new one.
03
Regression awareness
Cross-references the file's git history and prior incident notes (if connected) to warn when a change resembles something that already broke production once.
04
Test coverage gaps
Points out branches introduced in the diff that have no corresponding test, and suggests the specific case worth covering — not a generic "add more tests" note.
05
Convention & consistency
Learns your repo's existing patterns — naming, error handling, module boundaries — and flags where a new PR quietly diverges from them.
06
One-click fix suggestions
Where the fix is unambiguous, Betadiva proposes the exact patch as a suggested change your team can accept directly in the PR, no copy-pasting.