What problem does it solve? Codebases accumulate dead code, speculative abstractions, and hand-rolled utilities that duplicate the standard library. This Skill scans the whole repository and produces a ranked list of what to delete, simplify, or replace with stdlib or native platform features. ## Core Features & Use Cases - Repo-wide over-engineering audit: Scans the entire tree instead of a single diff and ranks findings biggest cut first. - Tagged findings: Classifies each finding as delete, stdlib, native, yagni, or shrink with a concrete replacement suggestion. - Net impact summary: Ends with an estimate of removable lines and dependencies, e.g. net: -300 lines, -2 deps possible. - Use Case: Before a major refactor, run the audit to find single-implementation interfaces, one-product factories, dead config flags, and wrappers that only delegate, then cut them in priority order. ## Quick Start Ask the agent to run ponytail-audit on this repository and list the top over-engineering findings ranked by biggest cut first.