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Incremental modernization of a legacy system v1.0.0

Use this resource to plan the incremental modernization of an older system

New

  • 303 downloads
  • 110 likes
  • 138 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install legacy-system-migration-plan

With no option, the skill goes to ~/.agents/skills/; add --agent claude-code (or codex, cursor…) to target an agent.

First time: connect the CLI with

npx --yes palatekit@latest login

The agent assesses the existing system, sets up safety tests, then proposes an incremental migration using patterns such as the strangler fig and feature flags. You get a step-by-step plan and common pitfalls.

Mostly picked by

Updated November 2, 2026

Card for the “Incremental modernization of a legacy system” skill

Details

Works in
Install guides
Generates with
Your agent's model
Licence
MIT

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What you get

  • SKILL.md: four steps, from assessment to stabilization
  • references/modernization-patterns.md: migration patterns

Good fit for

  • You want to extract parts of a monolith without downtime
  • An outdated library must be updated without regressions

Not for

    Tags

    • migration
    • legacy
    • monolith
    • refactoring

    About

    You say

    “Plan the gradual split of our PHP monolith into services, without taking the shop offline.”

    Card for the “Incremental modernization of a legacy system” skill

    Skill published by nickcrew under the MIT license, delivered in its original version.

    Show more

    How to use it

    1. Install the skill in your agent's skills folder
    2. Ask your agent to plan the incremental modernization of an older system
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • references/modernization-patterns.md10.6 KB
    • SKILL.md2.9 KB

    Origin and licence

    Listed unmodified

    Author
    nickcrew
    Source
    github.com/nickcrew/claude-cortex/tree/bb47af79ad3befe01ae01940fcf5f16e30a1b6df/skills/legacy-modernization
    Licence
    MIT

    Notice

    « legacy-modernization » (nickcrew, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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