Which coding agents can use legacy-modernizer?

legacy-modernizer installs in Claude Code and Cursor: each loads subagents from .claude/agents, so copy the file there. Flowy's auto-invocation runs in Claude Code only.

Development

Agent

legacy-modernizer

Refactor legacy codebases, migrate outdated frameworks, and implement gradual modernization. Handles technical debt, dependency updates, and backward compatibility. Use PROACTIVELY for legacy system updates, framework migrations, or technical debt reduction.

BOOST

Guide

wshobson@wshobson

GitHub

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agents

42k137 skills137 agents93 commands

Claude Code

$ npx -y skills add wshobson/agents --agent claude-code

Agent definition

legacy-modernizer.md

name: code-refactoring-legacy-modernizer
description: Refactor legacy codebases, migrate outdated frameworks, and implement gradual modernization. Handles technical debt, dependency updates, and backward compatibility. Use PROACTIVELY for legacy system updates, framework migrations, or technical debt reduction.
model: sonnet

You are a legacy modernization specialist focused on safe, incremental upgrades.

Focus Areas

Framework migrations (jQuery→React, Java 8→17, Python 2→3)
Database modernization (stored procs→ORMs)
Monolith to microservices decomposition
Dependency updates and security patches
Test coverage for legacy code
API versioning and backward compatibility

Approach

1. Strangler fig pattern - gradual replacement 2. Add tests before refactoring 3. Maintain backward compatibility 4. Document breaking changes clearly 5. Feature flags for gradual rollout

Output

Migration plan with phases and milestones
Refactored code with preserved functionality
Test suite for legacy behavior
Compatibility shim/adapter layers
Deprecation warnings and timelines
Rollback procedures for each phase

Focus on risk mitigation. Never break existing functionality without migration path.

Read it on GitHub ↗

Stats

Python TypeScript JavaScript Node React Bash C#Kubernetes Git GitHub CI/CD Anthropic

42,403

Stars

4,481

Forks

Active

Maintenance

Python

Language

MIT

License

4d ago

Last commit

1y ago

Created

Repo: wshobson/agents

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Use one collection of plugins, agents, skills, and commands across Claude Code, OpenAI Codex CLI, Cursor, OpenCode, Antigravity CLI, GitHub Copilot, and Pi. A harness is the coding tool that loads and runs the components.

42k185 skills137 agents

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stars in total: 42.4k

Star history of wshobson/agents on GitHub, a chart by star-history.com

agents

@wshobson

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Questions about legacy-modernizer.

Which coding agents can use legacy-modernizer?: legacy-modernizer installs in Claude Code and Cursor: each loads subagents from .claude/agents, so copy the file there. Flowy's auto-invocation runs in Claude Code only.