Anthropic v1.0.0
Guided modernization for any legacy codebase: start with /modernize, get an assessment, an interactive map, the business rules mined from the code, and a plan you approve, then an upgrade, a rewrit...
From the developer
Claude Code
From the marketplace listing
Guided modernization for any legacy codebase: start with /modernize, get an assessment, an interactive map, the business rules mined from the code, and a plan you approve, then an upgrade, a rewrite or a rebuild with independent proof that the new code behaves like the old. Includes security hardening, a one-page report, specialist agents, and an optional live progress pane (early access).
Oct 27, 2026 · 18:00 UTC
Web → Id: “wf.69fa27218ec32565f8f89ffb” → “directoryPlugin.96b676c0-6433-4174-bce4-068d54655d46”
Web → Made by: “Anthropic” → “not provided”
Web → Subheading: “Modernize legacy codebases (COBOL, legacy Java/C++, monolith web apps) with a structured assess / map / extract-rules...” → “Modernize legacy codebases (COBOL, legacy Java/C++/.NET, monolith web apps) with a structured preflight / assess / ma...”
Oct 3, 2026 · 22:13 UTC
Catalogs updated; open the comparison for details.
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{
"name": "code-modernization",
"author": {
"name": "Anthropic",
"email": "support@anthropic.com"
},
"source": "./plugins/code-modernization",
"category": "development",
"homepage": "https://github.com/anthropics/claude-plugins-official/tree/main/plugins/code-modernization",
"description": "Guided modernization for any legacy codebase: start with /modernize, get an assessment, an interactive map, the business rules mined from the code, and a plan you approve, then an upgrade, a rewrite or a rebuild with independent proof that the new code behaves like the old. Includes security hardening, a one-page report, specialist agents, and an optional live progress pane (early access)."
}
{
"name": "code-modernization",
"author": {
"name": "Anthropic",
"email": "support@anthropic.com"
},
"version": "1.0.0",
"userConfig": {
"xray": {
"type": "boolean",
"title": "X-ray reads",
"default": true,
"description": "When Claude reads a legacy file, attach what the analysis already knows about it (callers, data it touches, the rules citing it) as context only the model sees."
},
"panel": {
"type": "string",
"title": "Progress pane",
"default": "auto",
"options": [
"auto",
"command",
"off"
],
"description": "auto opens the pane when a session starts in a workspace that has analysis/; command opens it only when you press its button or type /modernize-panel; off never opens it and never draws the button."
},
"track": {
"type": "string",
"title": "Track to follow",
"default": "auto",
"options": [
"auto",
"transform",
"uplift",
"reimagine"
],
"description": "auto follows whichever way the plugin's commands are working on the system: a rewrite, a same-stack uplift or a greenfield reimagine, by the newest artifacts. Name one to pin it."
},
"system": {
"type": "string",
"title": "System",
"default": "",
"description": "The system under analysis/ to follow. Empty follows the first one found."
},
"legacyDir": {
"type": "string",
"title": "Legacy directory",
"default": "legacy",
"description": "The read-only tree holding the legacy systems, relative to the workspace."
},
"telemetry": {
"type": "boolean",
"title": "Usage counts",
"default": true,
"description": "Send usage counts through Claude Code's own telemetry setting: whole numbers only, such as which command ran, how many rules were found, what kind of machine and python the plugin runs on, and which kind of error occurred. Never code, names, paths, prompts or error text. Nothing is sent when Claude Code telemetry is off. See exactly what would be sent with: python3 scripts/telemetry.py show"
},
"commandPrefix": {
"type": "string",
"title": "Command prefix",
"default": "/code-modernization:modernize-",
"description": "How the plugin's commands are written up to their verb, for the pane's Next line."
}
},
"description": "Guided modernization for any legacy codebase: start with /modernize, get an assessment, an interactive map, the business rules mined from the code, and a plan you approve, then an upgrade, a rewrite or a rebuild with independent proof that the new code behaves like the old. Includes security hardening, a one-page report, specialist agents, and an optional live progress pane (early access)."
}
plugin.json observed Nov 6, 2026 · 10:39 UTC. Manifest source ↗
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