Maven Decoder MCP

An MCP server that allows AI agents to inspect, search, and decompile Maven JAR files from the local ~/.m2 repository or Maven Central. It extracts source code, analyzes class structures, resolves dependency trees, and compares versions to identify breaking changes in Java libraries.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Community listingLocal stdioSource reviewed; not executedPublished by salitaba

Vendor documentation

Checks and signals

Each line is separate evidence, not a trust score.

Popularity 20 GitHub stars

What you can do with it

Decompile JARs to read actual source code
Compare dependency versions for breaking changes
Search for classes and methods across artifacts
Analyze dependency trees and transitive dependencies

Source and maintenance

Community listingRegistry 1.3.2MIT

mcp-registry: io.github.salitaba/maven-decoder-mcp@1.3.2 Source repository Project website

Last repository push: Sep 16, 2026, 3:25 PM UTC
Latest release: v1.3.2
Maintenance checked: Nov 2, 2026, 5:10 PM UTC

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

maven-decoder-mcp 1.3.2

pypiuvx

maven-decoder-mcp package definition

{
  "version": "1.3.2",
  "transport": "stdio",
  "identifier": "maven-decoder-mcp",
  "runtimeHint": "uvx",
  "registryType": "pypi",
  "environmentVariables": [
    {
      "name": "MAVEN_REPOSITORY",
      "format": "filepath",
      "description": "Path to the local Maven repository. Defaults to ~/.m2/repository."
    },
    {
      "name": "MAVEN_REMOTE_REPOS",
      "format": "string",
      "description": "Comma or whitespace separated list of remote Maven repository base URLs."
    },
    {
      "name": "MAVEN_REMOTE_USERNAME",
      "format": "string",
      "description": "Username for authenticating against private remote Maven repositories."
    },
    {
      "name": "MAVEN_REMOTE_PASSWORD",
      "format": "string",
      "description": "Password or token for authenticating against private remote Maven repositories."
    },
    {
      "name": "MAVEN_OFFLINE",
      "format": "boolean",
      "description": "Set to true to disable all network access and use only the local repository."
    },
    {
      "name": "MAVEN_AUTO_DOWNLOAD",
      "format": "boolean",
      "description": "Whether to automatically download missing artifacts from remote repositories. Defaults to true."
    },
    {
      "name": "MAVEN_DECODER_CACHE_DIR",
      "format": "filepath",
      "description": "Override directory used for decompilation and metadata caches."
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

Nov 2, 2026, 5:10 PM UTC · repository · passed · metadata changed · updated
Nov 2, 2026, 5:09 PM UTC · backfill · recorded · Pre-expansion baseline; unobserved rich metadata remains unknown

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.

Cursor configuration

{
  "mcpServers": {
    "maven-decoder-mcp-mcp": {
      "command": "uvx",
      "args": [
        "maven-decoder-mcp==1.3.2"
      ],
      "env": {
        "MAVEN_REPOSITORY": "<YOUR_MAVEN_REPOSITORY>",
        "MAVEN_REMOTE_REPOS": "<YOUR_MAVEN_REMOTE_REPOS>",
        "MAVEN_REMOTE_USERNAME": "<YOUR_MAVEN_REMOTE_USERNAME>",
        "MAVEN_REMOTE_PASSWORD": "<YOUR_MAVEN_REMOTE_PASSWORD>",
        "MAVEN_OFFLINE": "<YOUR_MAVEN_OFFLINE>",
        "MAVEN_AUTO_DOWNLOAD": "<YOUR_MAVEN_AUTO_DOWNLOAD>",
        "MAVEN_DECODER_CACHE_DIR": "<YOUR_MAVEN_DECODER_CACHE_DIR>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.

Cline configuration

{
  "mcpServers": {
    "maven-decoder-mcp-mcp": {
      "command": "uvx",
      "args": [
        "maven-decoder-mcp==1.3.2"
      ],
      "env": {
        "MAVEN_REPOSITORY": "<YOUR_MAVEN_REPOSITORY>",
        "MAVEN_REMOTE_REPOS": "<YOUR_MAVEN_REMOTE_REPOS>",
        "MAVEN_REMOTE_USERNAME": "<YOUR_MAVEN_REMOTE_USERNAME>",
        "MAVEN_REMOTE_PASSWORD": "<YOUR_MAVEN_REMOTE_PASSWORD>",
        "MAVEN_OFFLINE": "<YOUR_MAVEN_OFFLINE>",
        "MAVEN_AUTO_DOWNLOAD": "<YOUR_MAVEN_AUTO_DOWNLOAD>",
        "MAVEN_DECODER_CACHE_DIR": "<YOUR_MAVEN_DECODER_CACHE_DIR>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.

VS Code configuration

{
  "servers": {
    "maven-decoder-mcp-mcp": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "maven-decoder-mcp==1.3.2"
      ],
      "env": {
        "MAVEN_REPOSITORY": "<YOUR_MAVEN_REPOSITORY>",
        "MAVEN_REMOTE_REPOS": "<YOUR_MAVEN_REMOTE_REPOS>",
        "MAVEN_REMOTE_USERNAME": "<YOUR_MAVEN_REMOTE_USERNAME>",
        "MAVEN_REMOTE_PASSWORD": "<YOUR_MAVEN_REMOTE_PASSWORD>",
        "MAVEN_OFFLINE": "<YOUR_MAVEN_OFFLINE>",
        "MAVEN_AUTO_DOWNLOAD": "<YOUR_MAVEN_AUTO_DOWNLOAD>",
        "MAVEN_DECODER_CACHE_DIR": "<YOUR_MAVEN_DECODER_CACHE_DIR>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.

Claude Desktop configuration

{
  "mcpServers": {
    "maven-decoder-mcp-mcp": {
      "command": "uvx",
      "args": [
        "maven-decoder-mcp==1.3.2"
      ],
      "env": {
        "MAVEN_REPOSITORY": "<YOUR_MAVEN_REPOSITORY>",
        "MAVEN_REMOTE_REPOS": "<YOUR_MAVEN_REMOTE_REPOS>",
        "MAVEN_REMOTE_USERNAME": "<YOUR_MAVEN_REMOTE_USERNAME>",
        "MAVEN_REMOTE_PASSWORD": "<YOUR_MAVEN_REMOTE_PASSWORD>",
        "MAVEN_OFFLINE": "<YOUR_MAVEN_OFFLINE>",
        "MAVEN_AUTO_DOWNLOAD": "<YOUR_MAVEN_AUTO_DOWNLOAD>",
        "MAVEN_DECODER_CACHE_DIR": "<YOUR_MAVEN_DECODER_CACHE_DIR>"
      }
    }
  }
}

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