What problem does it solve? Code reviews often miss boundary conditions and unhandled branches, letting subtle bugs like off-by-one errors, null inputs, and race conditions slip into production. This Skill mechanically enumerates every path in a diff, file, or function and reports only the gaps that lack guards. ## Core Features & Use Cases - Exhaustive Path Enumeration: Walks all control flow branches and domain boundaries, deriving edge classes from the content itself rather than a fixed checklist. - Diff-Aware Scoping: When given a diff, analyzes only changed hunks and boundaries directly reachable from changed lines. - Structured JSON Output: Returns findings as a strict JSON array with location, trigger condition, guard snippet, and potential consequence. - Use Case: Paste a pull request diff before merging and receive a list of unhandled edge cases such as missing else branches or unguarded null inputs, each with a minimal fix sketch. ## Quick Start Ask the AI to run an edge case review on your diff or function and list only the unhandled boundary conditions.