Cheapest eSIM Korea (최저가e심)
REMOTE · PYUNGYO.COM
Daily verified travel eSIM/SIM prices: 54 countries, 1-30 day trips, Korean sellers. Free.
Available components
Last scanned (23 hours ago)
Scores higher than 76% of remote servers
Reachable. Last reached 4 Nov 2026.
Category E-commerce
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security80
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability57
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 1114 tokens (~222/item across 5 items; 5 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management67
- Stability observed for 20 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage95
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 86% of tool parameters carry a description.Partial
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 5 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 6 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities60
- Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28. See how to fix → Fail
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 4 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 63 to 67. That category is still filling its 30-day observation window: 19 days of observed history at the previous scan, 20 at this one. The score rises as the window fills, whether or not the server changes.
- 2 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 57 to 60. That category is still filling its 30-day observation window: 17 days of observed history at the previous scan, 18 at this one. The score rises as the window fills, whether or not the server changes.
- 31 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 50 to 53. That category is still filling its 30-day observation window: 15 days of observed history at the previous scan, 16 at this one. The score rises as the window fills, whether or not the server changes.
- 29 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 43 to 47. That category is still filling its 30-day observation window: 13 days of observed history at the previous scan, 14 at this one. The score rises as the window fills, whether or not the server changes.
- 27 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 37 to 40. That category is still filling its 30-day observation window: 11 days of observed history at the previous scan, 12 at this one. The score rises as the window fills, whether or not the server changes.
- 25 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 30 to 33. That category is still filling its 30-day observation window: 9 days of observed history at the previous scan, 10 at this one. The score rises as the window fills, whether or not the server changes.
- 23 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.
- 22 Oct 26 0
- Tool “get_seller_profile” rewrote its description, which is the text the model reads security
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 4 Nov 2026 · Probed https://pyungyo.com/esim/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=pyungyo.com | CN=YE1,O=Let's Encrypt,C=US | 29 Sept 2026 | 28 Dec 2026 | ECDSA 256 | ECDSA-SHA384 | 5eeb985f2eda15560148efb2cf2a2f0bd25 |
| SANs: pyungyo.com | ||||||
| CN=YE1,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 5ddd70dd31f801c85c186a7a04b80afe |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of pyungyo.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| pyungyo.com. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=31536000 |
| x-content-type-options | nosniff |
| referrer-policy | strict-origin-when-cross-origin |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://pyungyo.com/esim/mcp | Verified | 200 | |
| http (plaintext) | http://pyungyo.com/esim/mcp | HTTPS enforced | 301 | https://pyungyo.com/esim/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
compare_countries Cheapest countries for a trip length (나라별 최저가 순위) ~103
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).
| Name | Type | Req | Description |
|---|---|---|---|
| days | integer | – | 이용 일수 (기본 3) |
| form | string | – | – |
| limit | integer | – | 나라 수 (기본 10) |
No output schema declared.
No examples provided.
find_esim_prices Travel eSIM prices by country & days (나라·일수별 eSIM·유심 가격) ~471
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.
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | yes | 나라 또는 주요 도시 (예: japan, 일본, 오사카, tokyo, vietnam, 베트남, 다낭, 방콕, 발리) |
| days | integer | – | 이용 일수 1~30 (기본 3, 예: 3박 4일 여행이면 4) |
| form | string | – | esim(기본) 또는 usim(배송비 포함가) |
| gb | number | – | daily: 하루 용량 0.5·1·2·3·5 / total: 총 용량 3·5·10·20·30·50 |
| limit | integer | – | 판매처 수 (기본 10) |
| sort | string | – | 무제한 목록 정렬: reviews(리뷰 많은 순, 기본) 또는 price(싼 순) |
| type | string | – | 요금제 종류: unlimited(완전 무제한, 기본), daily(하루 용량제), total(기간 총량제) |
No output schema declared.
No examples provided.
get_price_trend Recent price trend (최근 가격 추세) ~123
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.
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | yes | 나라 또는 주요 도시 (예: japan, 일본, 오사카) |
| days | integer | – | 기본 3 |
| form | string | – | – |
No output schema declared.
No examples provided.
get_seller_profile Seller profile (판매처 운영 지표) ~184
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.
| Name | Type | Req | Description |
|---|---|---|---|
| seller | string | yes | 판매처 이름 (예: 말톡, 도시락이심, 유심사스토어) |
No output schema declared.
No examples provided.
list_countries Supported countries (지원 나라 목록) ~60
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).
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
How do I install the Cheapest eSIM Korea (최저가e심) MCP server?
Cheapest eSIM Korea (최저가e심) is a hosted endpoint at https://pyungyo.com/esim/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · pyungyo.com
claude mcp add --transport http shift7667-cheapest-esim 'https://pyungyo.com/esim/mcp'
What is the Cheapest eSIM Korea (최저가e심) MCP server?
Cheapest eSIM Korea (최저가e심) is an MCP server listed in the public MCP registry as io.github.shift7667/cheapest-esim. Daily verified travel eSIM/SIM prices: 54 countries, 1-30 day trips, Korean sellers. Free. This page covers its hosted endpoint (https://pyungyo.com/esim/mcp).
Is the Cheapest eSIM Korea (최저가e심) MCP server safe to use?
Cheapest eSIM Korea (최저가e심) scores 78 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Cheapest eSIM Korea (최저가e심) MCP server expose?
Cheapest eSIM Korea (최저가e심) exposes 5 tools: find_esim_prices, compare_countries, get_price_trend, get_seller_profile, list_countries. Their descriptions and schemas cost roughly 941 tokens of context every time the server is loaded.
Does the Cheapest eSIM Korea (최저가e심) MCP server require authentication?
No. We connected to Cheapest eSIM Korea (최저가e심) without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Cheapest eSIM Korea (최저가e심) MCP server still maintained?
Cheapest eSIM Korea (최저가e심) is still listed as active in the MCP registry. We last reached this channel on 4 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.