modernize-java vs Self-hosted GitHub MCP server
modernize-java is a plugin bundle for AI coding tools published by microsoft. Marketplaces we read that list it: 1 (Copilot CLI: github/awesome-copilot). Self-hosted GitHub MCP server is an MCP server published by adelaidasofia. Marketplaces we read that list it: 3 (Official MCP Registry, Claude Code: claude-plugins-community, Community GitHub marketplaces). As of our marketplace pass on 2026-10-13. This pair was picked by a reader, not by our comparison rule, so search engines are asked not to index the page.
Where each is published
| Marketplace |  modernize-java |  Self-hosted GitHub MCP server |
|---|---|---|
| Copilot CLI: github/awesome-copilot | Listed Version: 1.24.0 Forks (GitHub): 0 Stars (GitHub): 4 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 0.1.0 Forks (GitHub): 0 Stars (GitHub): 0 Not marked · First seen |
| Claude Code: claude-plugins-community | Not listed | Listed Version: 0.1.0 Forks (GitHub): 0 Stars (GitHub): 0 Not marked · First seen |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | modernize-java | Self-hosted GitHub MCP server |
|---|---|---|
| Marketplaces that list it (differs) | 1 (worse) | 3 (better) |
| Stars (GitHub) (differs) | 4 (better) | 0 (worse) |
| Forks (GitHub) | 0 | 0 |
| Last release | Not published | Not published |
| Where it runs (differs) | Installs as a plugin bundle | On your machine (https://github.com/adelaidasofia/github-mcp/releases/download/v0.1.0/github-mcp.mcpb) |
| Transport (differs) | Not stated | stdio |
| Tools it declares | Not published | Not published |
| Environment variables it asks for (differs) | Not published | 1, secrets among them: 1 |
| Hooks it runs (differs) | Not published | 1 |
| Parts of the bundle (differs) | Not published | 2 |
| Licence (differs) | MIT | Not stated |
| Repository (differs) | github.com/microsoft/modernize-java | github.com/adelaidasofia/github-mcp |
| Changes in the last 7 days (differs) | 0 | 2 |
| First seen | 2026-10-11 | 2026-10-11 |
Lines where the two differ have a tinted background and bold values. Where the data itself says which value is better (more marketplaces, a larger figure of the same marketplace, a fresher release, a verified mark on a marketplace that lists both), the better one is also marked green with ▲ and the worse one red with ▼. Where it runs, the transport, the tools, the settings, hooks, the bundle's parts, the licence and the week's changes are marked only as different: more or fewer is not better in itself.
What each says it does
modernize-java
GitHub Copilot modernization – Java Upgrade CLI Plugin helps you upgrade Java applications from the command line. It brings intelligent modernization capabilities to your terminal and CI/CD pipelines: analyze your project and generate an upgrade plan, automatically transform your codebase, fix build issues, validate against known CVEs, and output a detailed summary of file changes and updated dependencies.
Self-hosted GitHub MCP server
Self-hosted GitHub MCP server. PAT auth, stdio transport, transport-agnostic so it works with…
How to run each
modernize-java
No data for an automatic command: what its marketplaces declare does not say unambiguously how to connect it.
Self-hosted GitHub MCP server As a Claude Code plugin
/plugin marketplace add adelaidasofia/github-mcp
/plugin install github-mcp@github-mcpRequires: GITHUB_TOKEN (secret)
Commands built only from what the marketplaces declare; the full set for every client is on each card.
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
The marketplaces of modernize-java publish no settings it asks for, so we do not compare settings.
What it can do: modernize-java · What it can do: Self-hosted GitHub MCP server · Compare two other plugins
Data comes from the public marketplace file https://github.com/github/awesome-copilot/blob/HEAD/.github/plugin/marketplace.json. Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-community/blob/HEAD/.claude-plugin/marketplace.json. Data comes from public marketplace files in GitHub repositories of their authors. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.