Korean stocks · Claude · Codex
Korean stock data your AI looks up itself
LeetKit connects Claude Desktop and Codex to Korean market data: KRX prices, charts, financials, investor flows and DART filings. Ask in plain words and the AI fetches the numbers, each with the date it is from and where it came from.
Ask in English, get answers in English. Claude and Codex read the data and reply in the language you ask in.
Only the setup is in Korean: the installer, the setup guide and the trial form. Questions in English are welcome by email.
A real StockLens answer labels translated from Korean
Samsung Electronics: investor flows (5 days)
As of 2026-09-23 market close
Sep 23Institutions +1,346,883 shForeigners +4,513,767 sh
Sep 22Institutions +259,459 shForeigners +659,851 sh
Note: since Sep 14, the closing price is the last KRX after-market trade at 20:00, not the regular-session close.
Three data connectors, one conversation
Each connector (we call them Lenses) is an MCP server that Claude or Codex calls on its own. You don't paste charts or copy numbers.
- StockLens
Prices, charts, financials
Korean and US quotes, charts, financial statements and investor flows. Chart screening across every KOSPI and KOSDAQ stock with rules you write in a sentence. 1-minute bars if you connect a Korea Investment & Securities or Kiwoom Securities Open API account.
- DartLens
DART filings
Original filings from Korea's FSS disclosure system, full financial statements, order backlogs, and changes in insider and 5% holdings.
- TelegramLens
Telegram chatter
What public Korean stock channels on Telegram are talking about, which names are suddenly mentioned more, and the articles attached to posts.
Every number carries its label
AI usually gets markets wrong not by bad math but by mislabeled numbers: yesterday's value called today's, an estimate stated as fact. LeetKit fixes the labels first.
- A timestamp on every figure"As of Sep 23 close", so an old number is never passed off as today's.
- No mixingAfter-market prices and regular-session closes, consolidated and separate statements, are kept apart.
- Partial means partialIf only part of the data was read, it says so. Missing is never filled in as zero.
- Traceable to the sourceFor DART tables it states which table and row was read, so you can check the original.
Before you buy
LeetKit is built for Korean users. Here is what that means if you are not one.
- Only the setup is in KoreanThe LeetKit Manager installer and the setup guide are Korean. After that you just talk to your AI in English. Lesser-known company names and DART filings come in Korean; the AI translates them as it answers.
- Checkout is KoreanPurchases go through a Korean checkout page (Littly). Some overseas cards may not work, so email us first and we will sort it out.
- What you needWindows or macOS, and Claude Desktop or Codex (ChatGPT account). The AI app's own subscription is separate.
- Not investment adviceLeetKit does not recommend stocks and has no trading or order features. It connects public data to your AI; decisions are yours.
Pricing
One-time payment in Korean won. No subscription.
LeetKit STOCK
KRW 169,000sale until Oct 31, 2026
KRW 69,000
- StockLens
- Updates included
LeetKit FULL Package
KRW 330,000sale until Oct 31, 2026
KRW 119,000
- StockLens + DartLens + TelegramLens
- Updates included
14-day free trial of all three Lenses with just an email, no card. If it won't connect, contact us first; if we can't fix it, we refund you.