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MCP server · Developer Tools

jlens-server

by · github.com/bhxch/jlens

A Model Context Protocol (MCP) server for inspecting Java classes and Maven dependencies.

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39Low

Scored 5 months ago · breakdown

About jlens-server

jlens-server is an MCP server published by git+bhxch in the Developer Tools category: a Model Context Protocol (MCP) server for inspecting Java classes and Maven dependencies.

Install

Install
npx @bhxch/jlens-mcp-server
Claude Code
claude mcp add jlens -- npx -y @bhxch/jlens-mcp-server
npx
npx -y @bhxch/jlens-mcp-server

This server has no ConduID identity, so agent calls to it are not receipted. Pin the version you install and review the source before granting it credentials.

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Security checks

  • ✓README presentThe repository ships documentation.
  • !Scoped permissionsDoesn't declare a permission scope. Assume it can do anything its process can.

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README

JLens MCP Server

A Model Context Protocol (MCP) server for inspecting Java classes and Maven dependencies.

Key Features

  • Java Class Inspection: Inspect any Java class in your project or dependencies.
  • JDK Visibility: Support for inspecting JDK classes with @since information (requires javaHome).
  • Maven Integration: Deep resolution of Maven dependency graphs, including property placeholders.
  • Granular Detail Levels: Support for skeleton, basic, and full detail levels in class inspection.
  • Interface Support: Fully supports listing fields and methods for Java interfaces.

JDK Inspection with @since

To get accurate versioning information for JDK classes, provide the javaHome parameter to the inspect_java_class tool. JLens will automatically locate src.zip and extract Javadoc info.

Quick Execution

You can run JLens instantly using npx or uvx (requires Java 25+ installed):

# Using npx
npx -y @bhxch/jlens-mcp-server

# Using uvx
uvx jlens-mcp-server

Environment Variables

You can configure the server using environment variables:

  • JLENS_JAVA_HOME: Path to Java installation (overrides JAVA_HOME)
  • JLENS_ARGS: Additional JVM arguments or server options
# Example
JLENS_JAVA_HOME="/path/to/jdk-25" JLENS_ARGS="-Dfile.encoding=UTF-8" npx @bhxch/jlens-mcp-server

Agent Skills

Install specialized AI agent skills to help your agent use JLens more effectively (requires npx skills support):

# Install Chinese Version
npx skills install https://github.com/bhxch/jlens/tree/main/skills/jlens-mcp

# Install English Version
npx skills install https://github.com/bhxch/jlens/tree/main/skills/jlens-mcp-en

Documentation

Quick Links

Build & Run

Build

# Recommended for JDK 25+ due to test engine compatibility
mvn clean package -DskipTests

This will create an executable JAR file: target/jlens-mcp-server-1.1.2.jar

License

MIT

README copy captured when this server was indexed; it may lag the repository. The original is authoritative.

Questions

About jlens-server

How do I install jlens-server?

Run npx @bhxch/jlens-mcp-server, then add the server to your MCP client's configuration.

Is jlens-server safe to use with an AI agent?

Its trust score is 39 out of 100 (low). It passes 1 of the 2 static security checks run so far; the failures are listed above. It has no ConduID identity yet, so agent calls to it are not receipted.

Is jlens-server still maintained?

Conduid hasn't recorded a commit date for this repository yet. Check the repository directly for recent activity.