Model Context Protocol (MCP) server for Java decompilation
MCP Javadc MCP server is a locally run integration for AI assistants that speak the Model Context Protocol. Model Context Protocol (MCP) server for Java decompilation.
A Model Context Protocol (MCP) server for decompiling Java class files. This server allows AI assistants and tools that implement the MCP protocol to decompile Java bytecode into readable source code.
You will need one environment variable: CLASSPATH. Keep credentials in your client's env block or a secrets manager rather than in a file you might commit.
Installation goes through your MCP client rather than a global install: point it at without on npm and it is fetched when the client starts. The copy-paste blocks for Claude Desktop, Claude Code and Cursor are further down this page.
This sits in the developer tooling group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. It is maintained by idachev; worth a glance at recent repository activity before you build anything load-bearing on it.
This entry was verified against MCP Javadc's own documentation before publication; SyncDev keeps the directory reviewed rather than auto-generated.
Example MCP client configuration:
```json
{
"mcpServers": {
"javaDecompiler": {
"command": "npx",
"args": ["-y", "@idachev/mcp-javadc"],
"env": {
"CLASSPATH": "/path/to/java/classes"
}
}
}
}Configuration as documented by the project. Restart the client after saving.
| Variable | Description | Required |
|---|---|---|
| CLASSPATH | Filesystem location the server is allowed to use. | Optional |
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