71 Java-focused tools for files, MySQL, JavaFX, Spring Boot and JS-to-Java migration, over stdio.
Connect Runs on your machine
claude mcp add javabytes -e JAVABYTES_ALLOWED_DIRS=<JAVABYTES_ALLOWED_DIRS> -e JAVABYTES_DB_URL=<JAVABYTES_DB_URL> -e JAVABYTES_DB_USER=<JAVABYTES_DB_USER> -e JAVABYTES_DB_PASSWORD=<JAVABYTES_DB_PASSWORD> -- npx -y [email protected]{
"mcpServers": {
"javabytes": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"JAVABYTES_ALLOWED_DIRS": "<JAVABYTES_ALLOWED_DIRS>",
"JAVABYTES_DB_URL": "<JAVABYTES_DB_URL>",
"JAVABYTES_DB_USER": "<JAVABYTES_DB_USER>",
"JAVABYTES_DB_PASSWORD": "<JAVABYTES_DB_PASSWORD>"
}
}
}
}{
"mcpServers": {
"javabytes": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"JAVABYTES_ALLOWED_DIRS": "<JAVABYTES_ALLOWED_DIRS>",
"JAVABYTES_DB_URL": "<JAVABYTES_DB_URL>",
"JAVABYTES_DB_USER": "<JAVABYTES_DB_USER>",
"JAVABYTES_DB_PASSWORD": "<JAVABYTES_DB_PASSWORD>"
}
}
}
}{
"servers": {
"javabytes": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"JAVABYTES_ALLOWED_DIRS": "<JAVABYTES_ALLOWED_DIRS>",
"JAVABYTES_DB_URL": "<JAVABYTES_DB_URL>",
"JAVABYTES_DB_USER": "<JAVABYTES_DB_USER>",
"JAVABYTES_DB_PASSWORD": "<JAVABYTES_DB_PASSWORD>"
}
}
}
}Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
JAVABYTES_ALLOWED_DIRSOptional | Filesystem sandbox roots (defaults to working dir + JVM temp dir) |
JAVABYTES_DB_URLOptional | JDBC URL for the MySQL tools |
JAVABYTES_DB_USEROptional | MySQL user |
JAVABYTES_DB_PASSWORDOptional, secret | MySQL password |
Details
| Package | [email protected] (NPM, stdio) |
| First published | 13 Nov 2026 |
| Last updated | 13 Nov 2026 |
| Registry name | io.github.markymakes-dev/javabytes |
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