Arlet

Connect OpenDART to ChatGPT

Query OpenDART directly from ChatGPT. Arlet links the two through one MCP connection and takes care of API keys.

This server connects your AI client to OpenDART, the Financial Supervisory Service's official API over DART - Korea's electronic disclosure system where listed companies file their reports. For anyone tracking Korean competitors (semiconductors, batteries, autos, chemicals), this is the primary source.

Key features:

  • resolve_company: turn a company name (Korean or English) or 6-digit stock code into the 8-digit corp_code that the other tools take. The corp-code master is a 100k-company archive, cached server-side so lookups stay fast.
  • list_disclosures: filings by company, date range and type - periodic reports (annual ์‚ฌ์—…๋ณด๊ณ ์„œ, quarterly ๋ถ„๊ธฐ๋ณด๊ณ ์„œ), major issues reports, ownership disclosures - each with a direct DART viewer link.
  • get_company: profile with official names, market (KOSPI/KOSDAQ/KONEX), CEO, registration numbers, industry and fiscal year end.
  • get_financials: key accounts (revenue, operating profit, net income, total assets/liabilities/equity) from a chosen year and period, consolidated by default, with two prior periods for comparison.

Report names and account names come back in Korean; the tool notes explain the common ones (๋งค์ถœ์•ก = revenue, ์˜์—…์ด์ต = operating profit).

Using the API requires a free 40-character key issued at opendart.fss.or.kr (English portal: engopendart.fss.or.kr) - email verification only, roughly 20,000 requests/day. Set it as DART_API_KEY in your Arlet environment variables.

How to connect OpenDART to ChatGPT

  1. 1

    In the Arlet dashboard, open Data tools, find OpenDART, set the API key issued by OpenDART and switch it on.

  2. 2

    In ChatGPT, open Settings โ†’ Plugins โ†’ Browse plugins and click + at the top right.

  3. 3

    In the New Plugin form, enter "Arlet" as the Name, choose Server URL for Connection and enter https://mcp.arlet.dev/mcp/, pick OAuth for Authentication, check the risk acknowledgement and click Create.

  4. 4

    Open the Arlet plugin you created, click Sign in with Arlet, sign in with Google and click Allow. The connection is complete.

If the Plugins screen is not shown, turn on Developer mode under Settings โ†’ Security and login.

Use OpenDART with other AI clients