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future-minefuture-mine/claude-skill/skills/feature-grafter/SKILL.md

feature-grafter

Skill1 starsChanged 35 days agoNo licenceView on GitHub

Add new functionality to a legacy / production system by grafting it on through seams and adapters rather than rewriting working old code. Use this whenever the user wants to add a capability to an existing production codebase — triggers on "add <feature> to the legacy app", "I need the old system to also do X", "integrate <service> into this existing codebase", "extend this without rewriting it", or "build a new feature onto the production system". It favors extension points, seams, adapters, and new isolated modules; writes the NEW code to modern clean conventions even when the surrounding code isn't; and modifies existing code only as minimally as the blast-radius map allows. Use this (legacy/production) rather than the greenfield feature-integrator, which assumes a product you architected from a clean foundation; reach for feature-grafter whenever "don't break the working old code" is the priority.

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The file

We split this skill into the rules it gives an agent

4 rules. About 0 are common, 3 are distinctive, and 1 is very specific to this project.

  • ≈0

    Common · estimate

    Many files like this have a rule of this kind.

  • ≈3

    Distinctive · estimate

    This author's own choices. Worth a look.

  • 1

    Very specific

    Tied to their project's names, files or tools. Probably skip.

No licence file, so all rights are reserved — read it at the source. We count its rules but don't quote them. Read them on GitHub.

≈ “Common” is an estimate: at least 1 in 5 of the 350,495 skill files we read have a rule of the same kind, not the same words. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.

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