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legacy-modernizerby JeffallanDevelopmentGitHub stars: 12.1k

Legacy Modernizer skill: what it does and how to install it

Designs incremental modernisation plans for legacy codebases, with dependency maps, service boundaries, safety nets and staged migration rollouts.

Summary generated from the skill's documentation.

Warning. A security audit flagged this skill with a critical risk warning. Read its SKILL.md and scripts before you install it.

Install

$ npx skills add Jeffallan/claude-skills --skill legacy-modernizer

Run it in a terminal. If your agent is already running, start a new session so it picks the skill up.

About this skill

What it does. Assesses a legacy system, mapping dependencies, risks, integrations and data contracts before producing a phased roadmap with rollback strategies. It adds characterisation tests and monitoring, then guides facade-based migrations using feature flags, gradual traffic shifts and validation at each stage.

When to use it. For modernising legacy systems, decomposing monoliths, upgrading frameworks or languages, and reducing technical debt without disrupting operations. It avoids big-bang rewrites and retiring legacy paths before the replacement is proven stable.

History

Repo stars

12.1k+332 since 5 Oct 2026

Stars are counted for the whole repository, which holds 51 skills.

Show as a table
Repo stars by day
DateRepo stars
26 Oct 202612,068
25 Oct 202612,050
24 Oct 202612,032
23 Oct 202612,017
22 Oct 202611,999
21 Oct 202611,974
20 Oct 202611,948
19 Oct 202611,940
18 Oct 202611,921
17 Oct 202611,909
16 Oct 202611,895
15 Oct 202611,881
14 Oct 202611,865
13 Oct 202611,850
12 Oct 202611,838
11 Oct 202611,819
10 Oct 202611,806
9 Oct 202611,791
8 Oct 202611,776
7 Oct 202611,756
6 Oct 202611,746
5 Oct 202611,736

Installs

4.3k

Tracking since . A chart appears once there are 7 days of data.

Installs via skills.sh

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