What problem does it solve?
Mechanical edge-case and boundary-condition finder for code, diffs, specs, and logic. Use this skill whenever reviewing code for unhandled paths, testing boundary conditions, auditing branching logic, or complementing an adversarial review with method-driven path tracing. Also activate when the user says "find edge cases", "what did I miss", "boundary conditions", "unhandled paths", "off-by-one", "race condition", "null check", "missing validation", "what breaks", "what happens if", or "unhappy path". Activate proactively alongside adversarial-reviewer — they are orthogonal (attitude-driven vs method-driven) and produce different findings. Always activate when reviewing code before shipping, especially for parsers, state machines, validators, and auth flows.
Core Features & Use Cases
- Enumerates all branching paths across conditionals, switches, and loops to produce a complete path map.
- Derives edge classes such as missing else/default, off-by-one, and unguarded inputs, to guide reviews.
- Use case: run during code review to identify unguarded paths and prepare mitigation strategies.
Quick Start
Execute edge-case-hunter during code review to systematically enumerate all branching paths and surface unguarded edge cases.