Cheapest eSIM Korea (최저가e심)

io.github.shift7667Published by GitHub account shift7667v1.0.0Updated Oct 24, 2026

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

The publisher's own server: Cheapest Domains

VerifiedStreamable HTTPWeb executableLocation & LifestyleFinance

Overview

AI-generated overview

A free, no-auth remote MCP server that lets an assistant look up daily verified travel eSIM and SIM prices from Korean sellers for 54 countries and 1–30 day Tri

What you can do
Find sellers and the cheapest eSIM or SIM price for a destination country and trip length, with options for unlimited, daily or total data and eSIM or physical SIM form. Rank destination countries by cheapest unlimited eSIM for the same trip length. Show recent daily cheapest-price history and a judgement of whether today is cheap, without forecasting. Profile a seller's price changes, sold-out ratio and where it is cheapest today. List the covered destination countries with seller counts and a 3-day cheapest price.
When to use it
Useful when planning a trip and comparing travel data plans, checking whether today's price looks low before buying, or comparing destinations by eSIM cost. Fits assistants answering travel connectivity questions for Korean-market sellers.
Requirements
A remote Streamable HTTP endpoint; no authentication, no API key and no local runtime. Network access to the provider's server is needed. Rate limits apply per IP.
Before you install
All tools are read-only and no credentials are requested. Results are third-party price data collected daily from Naver SmartStore and may lag or change; the trend tool does not forecast future prices. Results include a citation line and the data is licensed CC BY 4.0, so attribution is expected when reusing it.

Installation

In SourceWeft

  1. Open Cheapest eSIM Korea (최저가e심) in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/io.github.shift7667%2Fcheapest-esim/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "cheapest-esim-korea-e": {
      "type": "http",
      "url": "https://pyungyo.com/esim/mcp"
    }
  }
}

README

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):
json
{  "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 [email protected]

Source: README.md at commit 0c22cc8

Tools

5

find_esim_prices

Travel eSIM prices by country & days (나라·일수별 eSIM·유심 가격)

Verified daily prices of travel eSIMs (and physical SIMs) sold to Korean travelers on Naver SmartStore, for a destination country or major city (54 countries, e.g., japan/일본/오사카/tokyo, vietnam/베트남/다낭) and trip length (1-30 days, or Korean trip phrases like "3박 4일", "일주일", "한 달"). Returns sellers ranked by reviews (or price) and the cheapest price under the same rules as the website (pagePrice), plus cheapest daily-cap, total-cap, USIM/eSIM, and adjacent-day (N-1 / N+1 days) alternatives. Plan types: unlimited, daily (N GB/day), total (N GB total). 해외여행 eSIM(또는 실물 유심) 판매처 가격을 나라(또는 주요 도시)·이용 일수별로 조회합니다. 네이버 스마트스토어 판매처의 옵션가를 매일 수집·검증한 값이며, 판매처는 리뷰 많은 순(또는 싼 순), 화면 최저가(pagePrice)는 웹·앱 화면과 같은 규칙입니다.

Parametersgbdaysformsorttypelimitcountryrequired

compare_countries

Cheapest countries for a trip length (나라별 최저가 순위)

Ranks destination countries by the cheapest unlimited travel eSIM (or SIM) price for the same trip length. 같은 이용 일수에서 나라별 무제한 eSIM(또는 유심) 최저가를 싼 순으로 보여 줍니다 (화면 규칙).

Parametersdaysformlimit

get_price_trend

Recent price trend (최근 가격 추세)

Daily history of the cheapest unlimited eSIM price for a country and trip length, with a judgement of whether today is cheap compared with the recorded days. Does not forecast. 나라·일수별 무제한 최저가의 최근 일별 기록과 "지금이 싼 편인가" 판단(지난 기록 대비). 앞으로의 가격은 예측하지 않습니다.

Parametersdaysformcountryrequired

get_seller_profile

Seller profile (판매처 운영 지표)

How often an eSIM seller changed prices recently (increases/decreases), its sold-out option ratio, the country/day cells where it is cheapest today, and the daily cross-check of its official website prices against Naver (today + 30-day history: match rate, days official site was cheaper). Independent comparison service, not affiliated with sellers. 판매처가 최근 가격을 얼마나 자주 바꿨는지·품절 옵션 비율, 오늘 그 판매처가 최저가인 나라·일수, 그리고 그 판매처 공식 홈페이지 가격과 네이버 값의 매일 교차 확인(오늘 + 최근 30일 이력). 최저가e심은 판매처와 관계없는 비교 서비스입니다.

Parameterssellerrequired

list_countries

Supported countries (지원 나라 목록)

Destination countries covered (key, Korean name, number of sellers, 3-day unlimited eSIM cheapest price). 가격을 비교하는 54개국 목록 (key·한글 이름·판매처 수·3일 무제한 최저가).

Takes no parameters.

Version history

1
  1. v1.0.0LatestOct 15, 2026

Score

90% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts

    Declare a license in the repository or the registry entry.

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