core-learning

A learning add-on for examining how a software project works internally and rebuilding a simpler version in Java. It can study projects written in languages such as Python, Go, Rust, Node.js, C#, Ruby, or Java.

In plain words
What is it for?
Use it to explore a project's architecture, create an inside-out learning plan, and implement simplified Java features with tests and tutorials. It is intended for understanding the essential design rather than copying every detail.
Why use it?
It removes the guesswork from learning an unfamiliar codebase or programming language. The work starts with the smallest core and gradually adds features, so each new part has a clear foundation.

Plugin for Claude Code

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Claude Code
/plugin marketplace add nlinhvu/learn-java-frameworks-marketplace
agentmods
npx agentmods add plugins/nlinhvu/learn-java-frameworks-marketplace/core-learning
Clone the repo
git clone --depth 1 https://github.com/nlinhvu/learn-java-frameworks-marketplace

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

core-learning scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/core-learning/.claude-plugin/plugin.json · 11 lines

What it actually says

{
  "name": "core-learning",
  "description": "Analyze any project's internals (Python, Go, Rust, Node.js, C#, Ruby, Java, etc.) inside-out and build simplified Java reimplementations with progressive learning — includes core-blueprint (outline planning with Mermaid visualizations) and core-builder (feature implementation with 10-section tutorials, structured Insight blocks, and architecture diagrams) skills, powered by specialized agents for source code exploration, architecture design, and quality review with confidence scoring",
  "version": "1.0.0",
  "author": {
    "name": "nlinhvu"
  },
  "license": "Apache-2.0",
  "keywords": ["java", "reimplementation", "any-language", "learning", "tutorial", "simplified", "core-first", "cross-language"]
}
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 11 lines scan A 9a0e608e51ba

Subscribe to this mod's changes

core-learning is a plugin published in the GitHub repository nlinhvu/learn-java-frameworks-marketplace (20 stars, last pushed 4mo ago), licensed Apache-2.0. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

Other plugins, from other repositories