{"slug":"wondelai-working-with-legacy-code","source_name":"wondelai/working-with-legacy-code","name":"Wondelai/Working With Legacy Code","description":"Safely change and test untested codebases using Feathers' \"Working Effectively with Legacy Code\". Use when the user mentions \"legacy code\", \"no tests\", \"untested codebase\", \"how do I test this\", \"seams\", \"characterization tests\", \"golden master\", \"sprout method\", \"afraid to change this code\", \"monster method\", \"dependency breaking\", or \"inherited a messy codebase\". Also trigger when changing code without tests safely, getting a class under test when constructors, statics, or singletons block it,","version":1,"lift":{"pass_rate_delta_pts":4,"pass_rate_pct":96,"total_cases":25,"passed_cases":24,"tokens_delta_pct":233.4,"turns_delta_pct":0,"verdict":"mixed","benchmark_model":"gemini-3.6-flash","grading_method":"judged","completed_at":"2026-08-12T04:57:42.269498+00:00"},"skill_score":null,"benchmark_models":[{"model":"gemini-3.6-flash","headline":true,"delta_pts":4,"with_pass_pct":96,"without_pass_pct":92,"tokens_delta_pct":233.4,"turns_delta_pct":0,"total_cases":25,"cases_aggregated":25,"verdict":"mixed","never_hurt":true,"completed_at":"2026-08-12T04:57:42.269498+00:00","run_id":"7ea1d792-d63e-41cb-83d7-9df17a45dc76","version_number":1,"is_latest_version":true,"gate":null}],"trust":{"skill_safety":"passed","safety_status":"clean","intent_verdict":"safe","content_status":"clean","indexable":true},"license":"MIT","install_count":0,"manifest_hash":"0a0913ad097727d7d1bd0149d8930ccaa7a53b9310795f422376025adbc2175b","raw_url":"https://app.decimal.ai/s/wondelai-working-with-legacy-code/SKILL.md","scorecard_url":"https://app.decimal.ai/skills/wondelai-working-with-legacy-code"}