working-effectively-with-legacy-code
Apply Michael Feathers-inspired legacy-code rules when changing hard-to-test code safely with characterization tests, seams, sprout methods, or wrap methods.
How do I install this agent skill?
npx skills add https://github.com/ciembor/agent-rules-books --skill working-effectively-with-legacy-codeIs this agent skill safe to install?
- Gen Agent Trust Hubpass
This skill provides a set of engineering principles and workflows for safely modifying legacy code based on Michael Feathers' book. It consists entirely of markdown documentation and contains no executable code, external dependencies, or security risks.
- Socketpass
No alerts
- Snykpass
Risk: LOW · No issues
What does this agent skill do?
Working Effectively with Legacy Code Skill
Use this skill when a task involves risky legacy changes, missing tests, characterization tests, seams, dependency breaking, sprout method, wrap method, or incremental risk reduction.
Before making design or code decisions, read and apply working-effectively-with-legacy-code.mini.md. Use working-effectively-with-legacy-code.md only as a deeper reference when the mini rules are not enough for the current legacy-code tradeoff.
How can the creator link this skill?
Add the canonical catalog link to the repository README so users can inspect current installs and available audits. The publishing guide covers the complete discovery path.
<a href="https://skillzs.dev/skills/ciembor/agent-rules-books/working-effectively-with-legacy-code">View working-effectively-with-legacy-code on skillZs</a>