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Cheapest eSIM Korea (최저가e심)

Official registry E-commerce

Daily verified travel eSIM/SIM prices: 54 countries, 1-30 day trips, Korean sellers. Free.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http cheapest-esim-korea-e 'https://pyungyo.com/esim/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "cheapest-esim-korea-e": {
            "type": "http",
            "url": "https://pyungyo.com/esim/mcp"
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. Cheapest eSIM Korea — travel eSIM price MCP server (최저가e심)
  2. Tools
  3. Connect
  4. How the data is made
  5. Limits
  6. License & citation
  7. 한국어 안내

Cheapest eSIM Korea — travel eSIM price MCP server (최저가e심)

Verified daily prices of travel eSIMs and physical SIMs sold to Korean travelers, for 54 destination countries and 1–30 day trips — as a free, no-auth remote MCP server and a public JSON API.

Every result ends with a citation line, e.g. 출처: 최저가e심(pyungyo.com/esim), 2026-10-15 기준, so assistants can attribute the source and as-of date.

Tools

All tools are read-only (readOnlyHint: true).

ToolWhat it doesInputs
find_esim_pricesSellers and the cheapest price for a country and trip lengthcountry (e.g. japan or 일본), days 1–30, type unlimited/daily/total, gb, form esim/usim, limit
compare_countriesCountries ranked by cheapest unlimited eSIM for the same trip lengthdays, form, limit
get_price_trendRecent daily cheapest-price history and "is today cheap?" judgement (no forecasting)country, days (1, 3, 5, 7, 10, 15, 30), form
get_seller_profileHow often a seller changed prices, sold-out ratio, cells where it is cheapest todayseller
list_countriesSupported countries—
Example

"What's the cheapest 5-day unlimited eSIM for Japan?"

find_esim_prices {"country": "japan", "days": 5} →

일본 eSIM 5일 무제한: 화면 최저가 10,000원 (나무커머스, 판매처 N곳 비교)
1. 도시락이심 12,560원 · 리뷰 136,166 · …
…
출처: 최저가e심(pyungyo.com/esim), 2026-10-15 기준 · 매일 20:00 KST 수집·검증 · https://pyungyo.com/esim

structuredContent carries the full JSON (sellers, prices, reviews, options, product URLs, as-of time, license, citation).

Connect

  • Claude: Settings → Connectors → Add custom connector → URL https://pyungyo.com/esim/mcp
  • ChatGPT: Settings → Apps & Connectors → Advanced (developer mode) → Create → MCP server URL https://pyungyo.com/esim/mcp, no authentication
  • Any MCP client (remote/Streamable HTTP):
{
  "mcpServers": {
    "cheapest-esim": { "type": "http", "url": "https://pyungyo.com/esim/mcp" }
  }
}

How the data is made

  • Every day at 20:00 KST, option-level prices of travel eSIM/SIM products on Naver SmartStore are collected from each seller's product API.
  • Only data that passes automatic verification (live re-check of a sample, integrity checks, screen-text audit) is published; failed runs keep the previous day's data.
  • Unlimited lists include only data-only, no-throttling options; call plans, slow-after-cap, 1+1 bundles and sold-out options are excluded. SIM prices include shipping.
  • "Cheapest" (pagePrice) follows the same rule as the website: sellers with ≥1,000 reviews (filled up to 5 sellers by review count when fewer), bundles excluded, the cheapest single option per seller.
  • No recommendation scores and no paid placement: sellers are ordered by review count.

Limits

120 requests/min per IP for the API, 300/min for MCP. For bulk use, download the daily CSV: https://pyungyo.com/esim/data/esim-price-trends.csv

License & citation

Data: CC BY 4.0 — cite as 최저가e심(pyungyo.com/esim), <as-of date>. Prices change daily; always include the date. Purchases happen on the seller's store; we are not affiliated with any seller.

한국어 안내

해외여행 eSIM·실물 유심 판매처(네이버 스마트스토어) 가격을 매일 20:00(KST)에 수집·검증해 54개국·1~30일로 비교한 데이터를 MCP 서버와 공개 API로 무료 제공합니다.

  • MCP 주소: https://pyungyo.com/esim/mcp (인증 없음, 읽기 전용 도구 5개)
  • 공개 API: https://pyungyo.com/esim/api/v1
  • 안내: https://pyungyo.com/esim/developers
  • 인용: "최저가e심(pyungyo.com/esim), 기준일" (CC BY 4.0)

운영: 케이코인(KCOIN) · 문의 wmask@naver.com

Frequently asked questions

What is Cheapest eSIM Korea (최저가e심)?

Daily verified travel eSIM/SIM prices: 54 countries, 1-30 day trips, Korean sellers. Free.

How do I install Cheapest eSIM Korea (최저가e심)?

It runs as a remote server. In Claude Code: claude mcp add --transport http cheapest-esim-korea-e 'https://pyungyo.com/esim/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Cheapest eSIM Korea (최저가e심) need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is Cheapest eSIM Korea (최저가e심) open source?

Its code is public on GitHub, but the repository does not declare a standard license.

Who maintains Cheapest eSIM Korea (최저가e심)?

It is published by shift7667. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.