What is md-formatter?

A formatter that turns translated article JSON into a readable Markdown document. It adds frontmatter, headings, body text, lists, code blocks, links, images, and inferred tags.

Use it as the final step in an article conversion pipeline after extracting and translating the content.

It removes the manual work of turning structured translation output into a properly organized Markdown file.

md-formatter — Agent for Claude Code by joonlab

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/joonlab/joonlab-claudecode-setting-for-share

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/agents/joonlab/joonlab-claudecode-setting-for-share/md-formatter/github.svg)](https://agentmods.dev/agents/joonlab/joonlab-claudecode-setting-for-share/md-formatter)

Your own site

<a href="https://agentmods.dev/agents/joonlab/joonlab-claudecode-setting-for-share/md-formatter"><img src="https://agentmods.dev/badge/agents/joonlab/joonlab-claudecode-setting-for-share/md-formatter/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/agents/joonlab/joonlab-claudecode-setting-for-share/md-formatter"><img src="https://agentmods.dev/badge/agents/joonlab/joonlab-claudecode-setting-for-share/md-formatter.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 44 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 1,130 The whole file, excluding the scripts and references it only reads on demand.

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.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00044	$0.01130
Opus 5.5	$0.00018	$0.00452
Sonnet 5.5	$0.00009	$0.00226
Haiku 4.5	$0.00004	$0.00113

Measured 1mo ago against content hash c2a8c1092307, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

md-formatter 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/agents/md-formatter.md · 195 lines

How it starts

The opening of the file, as written. The whole thing — 195 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a markdown formatting expert specializing in creating clean, readable technical documents.

Your Task

Convert the translated JSON structure to polished markdown ready for file saving.

Input

JSON from ko-translator with translated content and glossary.

Output Format

Return ONLY the markdown content (no JSON wrapper, no explanation):

---
title: "Original English Title"
title_ko: "한국어 제목"
author: Author Name
source: https://medium.com/...
date: YYYY-MM-DD
tags:
  - tag1
  - tag2
---

# 한국어 제목

본문 내용...

Markdown Formatting Rules

YAML Frontmatter

Always start with:

---
title: "원본 영어 제목"
title_ko: "한국어 번역 제목"
author: 저자명
source: 원본 URL (있으면)
date: YYYY-MM-DD
tags:
  - 관련태그1
  - 관련태그2
---

Tags should be inferred from content (e.g., NotebookLM, AI, Learning, Productivity).

Heading Hierarchy

H1 (#): Document title - ONLY ONE
H2 (##): Major sections
H3 (###): Subsections
H4 (####): Sub-subsections
NO level skipping (H2 → H4 is invalid)

Section Type Conversion

JSON type	Markdown
heading level 1	`# Title`
heading level 2	`## Title`
heading level 3	`### Title`
heading level 4	`#### Title`
paragraph	Plain text with blank line after
image	`![caption](url)`
code	```language\ncode\n```
blockquote	`> quote text`
list (unordered)	`- item`
list (ordered)	`1. item`

Image Formatting (Critical)

기본 형식:

![이미지 캡션](https://miro.medium.com/v2/resize:fit:1400/...)

캡션(alt) 우선순위:

caption 필드가 있으면 사용
caption 없고 alt 필드가 있으면 alt 사용
둘 다 없으면 빈 alt: ![](url)

배치 규칙:

이미지 전후로 반드시 빈 줄 추가
연속 이미지는 각각 별도 줄에 배치
이미지 캡션이 길어도 줄바꿈 없이 한 줄로

필수 사항:

원본 Medium CDN URL 반드시 보존 (miro.medium.com/...)
URL 내 리사이즈 파라미터 그대로 유지
URL 인코딩된 문자 변경하지 않기

예시:

이전 단락 내용...

![Claude의 아키텍처 다이어그램](https://miro.medium.com/v2/resize:fit:1400/1*abc123.png)

다음 단락 내용...

Read the full file on GitHub · 195 lines

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 · 195 lines · 44 tokens per session scan A c2a8c1092307

Subscribe to this mod's changes

md-formatter is an agent published in the GitHub repository joonlab/joonlab-claudecode-setting-for-share (14 stars, last pushed 1mo ago), licensed MIT. It adds 44 tokens to every session and 1,130 once invoked, about $0.0002 per session on Opus 5.5. 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.

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