Compare daily verified travel eSIM and SIM prices across 54 countries for Korean travelers.
Connects to Korean eSIM and physical SIM sellers on Naver SmartStore. Muse can find the cheapest plans by destination and trip length, compare prices across countries, show price trends, and profile seller reliability.
Try asking Muse: "Find the cheapest eSIM for a 5-day trip to Japan."
Source: Found in the official MCP Registry (io.github.shift7667/cheapest-esim) · First listed October 28, 2026
Each bar is one check, every 15 minutes. Green means it answered. Last checked 3 h ago.
What Muse can see: It does not ask you to sign in, so it cannot see your accounts. It only sees what Muse sends it from your request.
Before it acts: Read what Muse plans to do before you approve it, and remove the app from Muse when you stop using it.
musedirectory.ai is not part of Meta. More about how Muse handles your information
Not in Muse's Connectors list yet, but Muse can still use it. Copy the request below and paste it into Muse. Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
https://pyungyo.com/esim/mcpNot in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
Cheapest eSIM Korea is a remote MCP server, so any assistant that can add a custom connector by link can use it. Same link, same tools.
In ChatGPT, open Settings, then Connectors (called Apps & Connectors on some accounts).
Under Advanced settings, switch on Developer mode. That is what lets you add a connector by link.
Choose Create, give it a name, paste the link as the MCP server URL, and save. If it needs a sign-in, ChatGPT asks for it here.
Start a chat, open the tools menu, pick the connector, and ask. ChatGPT asks before it runs a tool the first time.
Custom connectors need a paid ChatGPT plan, and on Team, Enterprise and Edu accounts only an admin can add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in ChatGPT
In Claude, open Settings, then Connectors.
Choose Add custom connector, give it a name, and paste the link.
If it needs a sign-in, Claude sends you to it. Then turn the connector on in a chat from the tools menu and ask.
Custom connectors are available on paid Claude plans; on Team and Enterprise accounts an admin may need to add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in Claude
https://pyungyo.com/esim/mcpResponse time at the last check: 1126ms. Worked in 100% of checks over 30 days.
Screened, no issues found
Screening looks for known threats and hidden instructions at the time of the check, and runs again weekly and whenever the tool list changes. It cannot see the server's code, so only connect what you need and review what Muse asks to do. How screening works.
find_esim_pricesVerified 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").compare_countriesRanks 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).get_price_trendDaily 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.get_seller_profileHow 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 list_countriesDestination 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).https://pyungyo.com/esim/mcpNot in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use Cheapest eSIM Korea to help me. It is a free service with an MCP server at https://pyungyo.com/esim/mcp. It does not need an API key. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
At the last check (October 29, 2026, 08:46 UTC) the endpoint was working, answering in 1126ms. Over the last 7 days it answered 100% of health checks. It is checked every 15 minutes.
It was screened on October 28, 2026 with the result "screened, no issues found". Screening checks the domain against threat feeds and reads the tools for hidden instructions and requests for passwords or card numbers. It cannot see the server's code, so grant only the access you need.
It exposes 5 tools, including find_esim_prices, compare_countries, get_price_trend, get_seller_profile. For example, you could ask Muse: "Find the cheapest eSIM for a 5-day trip to Japan."
This listing was added from public sources (Found in the official MCP Registry (io.github.shift7667/cheapest-esim)). If you build Cheapest eSIM Korea, claim it to correct the details and get your badge.
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<a href="https://musedirectory.ai/connector/cheapest-esim-korea"><img src="https://musedirectory.ai/badge/cheapest-esim-korea.svg" alt="Cheapest eSIM Korea on musedirectory.ai" width="236" height="40"></a>