A flashcard website generator for learning vocabulary in different languages, with flip cards, quizzes, and pronunciation.

Use it to create vocabulary sets for languages such as Japanese or English, organized by topic, level, and number of words.

It turns a requested vocabulary topic and difficulty into a ready-to-use browser page, so you do not have to build the study material yourself.

flashcard — Skill for Claude Code by natthasath

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.

Any agent

npx skills add natthasath/natthasath-marketplace --skill flashcard

Clone the repo

git clone --depth 1 https://github.com/natthasath/natthasath-marketplace

Made for: Claude Code.

Or install productive, the plugin that ships this one along with the rest of its 16 skills.

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/skills/natthasath/natthasath-marketplace/flashcard/github.svg)](https://agentmods.dev/skills/natthasath/natthasath-marketplace/flashcard)

Your own site

<a href="https://agentmods.dev/skills/natthasath/natthasath-marketplace/flashcard"><img src="https://agentmods.dev/badge/skills/natthasath/natthasath-marketplace/flashcard/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/skills/natthasath/natthasath-marketplace/flashcard"><img src="https://agentmods.dev/badge/skills/natthasath/natthasath-marketplace/flashcard.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 107 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,111 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	$0.00107	$0.01111
Opus 5	$0.00053	$0.00556
Sonnet 5	$0.00021	$0.00222
Haiku 4.5	$0.00011	$0.00111

Measured 11d ago against content hash b3a7484de5f9, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

flashcard 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 11d 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.

plugins/productive/skills/flashcard/SKILL.md · 94 lines

How it starts

The opening of the file, as written. The whole thing — 94 lines — stays where its author put it; the contents beside it link to each section on GitHub.

บทบาท:

คุณทำหน้าที่เป็นผู้สร้าง Flashcard website พร้อมคำศัพท์ที่เหมาะสมตามหมวดและระดับที่ผู้ใช้กำหนด ผลลัพธ์คือ artifact HTML ที่ใช้งานได้ทันทีในเบราว์เซอร์ — เปิดแล้วเรียนได้เลย

รูปแบบ:

ขั้นตอนที่ 1 — ถามก่อนเสมอ

ก่อน generate ทุกครั้ง ให้ถามผู้ใช้ 4 ข้อนี้พร้อมกัน:

ภาษา — คำศัพท์ภาษาอะไร? (เช่น อังกฤษ, ญี่ปุ่น, ฝรั่งเศส, เกาหลี, จีน, เยอรมัน)
หมวดคำศัพท์ — หมวดไหน? (เช่น สนามบิน, อาหาร, IT, ธุรกิจ, ร่างกาย, การเดินทาง)
ระดับความยาก — ง่าย / กลาง / ยาก
จำนวนคำศัพท์ — กี่คำ? (แนะนำ 10–30 คำ)

รับคำตอบทั้ง 4 ข้อก่อน แล้วค่อยดำเนินการขั้นตอนต่อไป

ขั้นตอนที่ 2 — สร้างคำศัพท์

อ่าน references/example_words.json เพื่อดู schema ที่ถูกต้อง แล้วสร้างคำศัพท์ตาม spec ที่ผู้ใช้กำหนด:

{
  "category": "<ชื่อหมวดภาษาไทย + ภาษาต้นทาง เช่น 'อาหาร (Food)'>",
  "language": "<ภาษา เช่น 'อังกฤษ', 'ญี่ปุ่น'>",
  "difficulty": "<beginner | intermediate | advanced>",
  "lang_code": "<รหัสภาษาสำหรับ TTS — ดูตารางด้านล่าง>",
  "words": [
    {
      "word": "<คำในภาษานั้น>",
      "translation": "<ความหมายภาษาไทย>",
      "phonetic": "<IPA / romaji / pinyin / furigana>",
      "pos": "<noun | verb | adjective | adverb | phrase>",
      "example": "<ประโยคตัวอย่างในภาษานั้น ไม่ใช่ภาษาไทย>",
      "synonyms": ["<คำใกล้เคียง>"]
    }
  ]
}

lang_code สำหรับ Web Speech API:

ภาษา	lang_code
อังกฤษ (US)	en-US
อังกฤษ (UK)	en-GB
ญี่ปุ่น	ja-JP
จีนกลาง	zh-CN
จีน (ไต้หวัน)	zh-TW
เกาหลี	ko-KR
ฝรั่งเศส	fr-FR
เยอรมัน	de-DE
สเปน	es-ES
อิตาลี	it-IT
รัสเซีย	ru-RU
ไทย	th-TH

ขั้นตอนที่ 3 — สร้าง artifact HTML

อ่าน references/template.html
Replace __VOCAB_DATA__ ด้วย JSON object ที่สร้างในขั้นตอนที่ 2
Output เป็น artifact ประเภท text/html ให้ผู้ใช้เปิดใช้งานได้ทันที

ตัวอย่าง JS line ที่ต้อง replace:

// ก่อน replace:
const VOCAB_DATA = __VOCAB_DATA__;

// หลัง replace:
const VOCAB_DATA = {"category":"อาหาร (Food)","language":"ญี่ปุ่น","difficulty":"beginner","lang_code":"ja-JP","words":[...]};

Read the full file on GitHub · 94 lines

Files

What ships with it

2 files beside SKILL.md 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.

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.

11d ago First seen · 94 lines · 107 tokens per session scan A b3a7484de5f9

Subscribe to this mod's changes

flashcard is a skill published in the GitHub repository natthasath/natthasath-marketplace (1 stars, last pushed 3d ago), licensed MIT. It adds 107 tokens to every session and 1,111 once invoked, about $0.0005 per session on Opus 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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