A Claude Code plugin that creates a learning brief immediately after the agent changes code. The brief shows what changed, explains Python syntax, and traces logic and data flow.

Use it to review recent code changes, see a map of affected files, understand Python constructs, and follow how data moves through the changed code.

It reduces the need to open each file's change list separately when you are trying to understand an agent-made patch.

diffscope — Plugin for Claude Code by SWHee

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.

Clone the repo

git clone --depth 1 https://github.com/SWHee/diffscope

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/plugins/swhee/diffscope/diffscope/github.svg)](https://agentmods.dev/plugins/swhee/diffscope/diffscope)

Your own site

<a href="https://agentmods.dev/plugins/swhee/diffscope/diffscope"><img src="https://agentmods.dev/badge/plugins/swhee/diffscope/diffscope/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/plugins/swhee/diffscope/diffscope"><img src="https://agentmods.dev/badge/plugins/swhee/diffscope/diffscope.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session not measured What this adds to a session before it is invoked.

When invoked not measured The manifest loads nothing itself; its 2 skills, 3 commands, 3 agents, 2 hooks cost 830 tokens a session between them.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

diffscope 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 1mo ago.

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.

.claude-plugin/plugin.json · 22 lines

What it actually says

{
  "name": "diffscope",
  "homepage": "https://github.com/SWHee/diffscope",
  "repository": "https://github.com/SWHee/diffscope",
  "description": "코딩 에이전트가 코드를 바꾼 직후, 그 턴의 변경분만 자동으로 잡아내 터미널에 학습 브리핑을 출력합니다. 변경 지도 시각화 + Python 문법 해설 + 로직/데이터 흐름 추적을 한 번에 제공해, 파일마다 diff를 열어보며 따라가는 시간을 없앱니다.",
  "version": "0.1.0",
  "author": {
    "name": "geonhee"
  },
  "license": "MIT",
  "keywords": [
    "diff",
    "code-review",
    "learning",
    "python",
    "code-comprehension",
    "claude-code-plugin",
    "hooks",
    "visualization"
  ]
}

Contents

What it installs

The manifest is a name and a version. 2 skills, 3 commands, 3 agents, 2 hooks travel with it, and installing the plugin installs all of them — 830 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Files

What ships with it

1 file beside plugin.json in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

marketplace.json 389 B

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.

1mo ago First seen · 22 lines scan A e8b777445a60

Subscribe to this mod's changes

diffscope is a plugin published in the GitHub repository SWHee/diffscope (1 stars, last pushed 2mo ago), licensed MIT. 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 2026-08-31.

Claude Code Code review Learning and teaching claude-code-plugin code-comprehension developer-tools diff hooks

ballast

Builds up to a goal in a field you have no expertise in: splits it into the foundations that goal actually needs, mobilizes what you already hold, learns what is missing, and leaves every solved path behind for the next goal. Nothing is called done until a check passes.

svy04/ballast · not measured

code-tutor

AI-powered code learning and mentoring system with interactive teaching, code explanations, practice exercises, and educational code reviews.

sigistry/marketplace · not measured

diagnostic-legibility

Agents accountable for helping to maintain human understanding. The first agent builds, self-challenges, and cross-checks two models of a codebase scope — architectural moving parts and domain concepts — and surfaces the mutually-corrected models on demand. Future agents will extend the discipline to other domains.

Habitat-Thinking/ai-literacy-superpowers · not measured

diffscope