Korea & Asia Everyday Calculators (kWhmate)
REMOTE · KWHMATE.COM
Free calculators with sources: electricity bills (KR/TW/PH/JP), Korea taxi fares, tax refunds.
Available components
Last scanned (20 hours ago)
Scores higher than 45% of remote servers
Reachable. Last reached 18 Oct 2026.
Category Finance and Payments
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 Security57
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not fully verified: no authorisation is required to call this server, and 1 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. See how to fix → View diagnostics → Unverified
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- 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 Usability55
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 2927 tokens (~154/item across 19 items; 19 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 Management10
- Stability observed for 3 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage80
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 40% of tool parameters carry a description.Partial
Tool Safety75
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- 0 of 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation; "korea_tax_refund" implies "refund" and declares readOnlyHint instead, contradicting what its own name says it does. See how to fix → Fail
- An AI judge read all 20 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
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.
- 17 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.
- 16 Oct 26 0
- Stability: unverified → 0.03 ▲ functional
- 15 Oct 26 58
First indexed and scored.
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 18 Oct 2026 · Probed https://kwhmate.com/api/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=kwhmate.com | CN=WE1,O=Google Trust Services,C=US | 28 Sept 2026 | 27 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | d5a1a279caaf71af0e2c8b456a6c9156 |
| SANs: kwhmate.com | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of kwhmate.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| kwhmate.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 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://kwhmate.com/api/mcp | Verified | 200 | |
| http (plaintext) | http://kwhmate.com/api/mcp | HTTPS enforced | 301 | https://kwhmate.com/api/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 →
busan_taxi Busan taxi fare (regular mid-size taxi meter estimate) ~114
Busan taxi fare (regular mid-size taxi meter estimate). Same code as https://koreasurvivalkit.com/busan-taxi-fare-calculator/. Reference: Source: Busan Metropolitan City, taxi fares in effect since 1 June 2023 (checked September 2026). Returns an estimate with the source and page URL.
| Name | Type | Req | Description |
|---|---|---|---|
| hour | integer | – | – |
| km | number | yes | – |
| outside_busan | boolean | – | – |
| slow_traffic_minutes | number | – | – |
No output schema declared.
No examples provided.
education_tax_credit 교육비 세액공제 (Korean education expense tax credit, 2026 spending) ~144
교육비 세액공제 (Korean education expense tax credit, 2026 spending). Same code as https://gyesanmate.com/education-tax-credit/. Reference: 출처: 소득세법 제59조의4, 2025년 세법개정(2025.12 국회 통과). Returns an estimate with the source and page URL.
| Name | Type | Req | Description |
|---|---|---|---|
| decided_tax | number | – | Expected decided tax (credit is capped at this) |
| items | array | yes | Per person: "kind:spend" in GET (e.g. school:3500000,college:8000000) or [{kind, spend}] in JSON |
No output schema declared.
No examples provided.
gap_investment 갭투자 실투자금 (Korean "gap" investment: acquisition tax, brokerage, cash needed) ~180
갭투자 실투자금 (Korean "gap" investment: acquisition tax, brokerage, cash needed). Same code as https://gyesanmate.com/gap-investment/. Reference: 출처: 지방세법 제13조의2(시행 2026.1.1)·제151조 · 1주택 세율·중개보수는 최신 공지 확인 · 투자 권유 아님. Returns an estimate with the source and page URL.
| Name | Type | Req | Description |
|---|---|---|---|
| adjusted_area | boolean | – | – |
| growth_percent | number | – | – |
| houses | integer | – | Number of homes after buying |
| jeonse | number | yes | – |
| other_costs | number | – | – |
| over_85m2 | boolean | – | – |
| price | number | yes | – |
| years | number | – | – |
No output schema declared.
No examples provided.
gpa_converter 학점 비례 환산 (GPA scale conversion 4.5 / 4.3 / 4.0) ~116
학점 비례 환산 (GPA scale conversion 4.5 / 4.3 / 4.0). Same code as https://gyesanmate.com/gpa-converter/. Reference: 기준: 단순 비례 환산(참고용) · 학교·기업마다 환산식이 다르므로 지원처 기준이 우선. Returns an estimate with the source and page URL.
| Name | Type | Req | Description |
|---|---|---|---|
| from_scale | number | – | – |
| score | number | yes | – |
| to_scale | number | – | – |
No output schema declared.
No examples provided.
jp_electricity Japan electricity bill (TEPCO Juryo Dento B) ~141
Japan electricity bill (TEPCO Juryo Dento B). Same code as https://kwhmate.com/jp/electricity-bill/. Reference: 出典：東京電力エナジーパートナー「従量電灯B・C」・燃料費調整単価等一覧、経済産業省「2026年度の賦課金単価」. Returns an estimate with the source and page URL.
| Name | Type | Req | Description |
|---|---|---|---|
| amperes | integer | – | – |
| fuel_adjustment | number | – | Fuel cost adjustment, yen per kWh (default: this month) |
| kwh | number | yes | – |
No output schema declared.
No examples provided.
jp_led_savings Japan LED replacement savings (TEPCO Juryo Dento B, 30 A) ~163
Japan LED replacement savings (TEPCO Juryo Dento B, 30 A). Same code as https://kwhmate.com/jp/led-savings/. Reference: 出典：東京電力エナジーパートナー「従量電灯B」. Returns an estimate with the source and page URL.
| Name | Type | Req | Description |
|---|---|---|---|
| count | integer | – | Number of lights |
| hours_per_day | number | – | – |
| led_cost | number | – | Total cost of the LEDs (optional, for payback) |
| new_watts | number | – | Watts of one LED |
| old_watts | number | – | Watts of one old bulb/tube |
| other_kwh | number | – | Other monthly household use without these lights (kWh) |
No output schema declared.
No examples provided.
korea_tax_refund Korea tourist tax (VAT) refund estimate ~115
Korea tourist tax (VAT) refund estimate. Same code as https://koreasurvivalkit.com/tax-refund-calculator/. Reference: Sources checked October 2026: VISITKOREA, Korea.net, Incheon Airport, Visit Seoul. Returns an estimate with the source and page URL.
| Name | Type | Req | Description |
|---|---|---|---|
| amounts | array | yes | Receipt amounts in KRW (one per store receipt) |
| stay_days | integer | – | – |
| store | string | – | instant = store offers instant refund at the till |
No output schema declared.
No examples provided.
kr_electricity Korea household electricity bill (KEPCO residential low-voltage, progressive tiers) ~115
Korea household electricity bill (KEPCO residential low-voltage, progressive tiers). Same code as https://kwhmate.com/ko/electricity-bill/. Reference: 기준: 2026년 4분기 요금 · 출처: 한국전력공사 주택용 전력(저압) 요금표. Returns an estimate with the source and page URL.
| Name | Type | Req | Description |
|---|---|---|---|
| kwh | number | yes | Monthly usage in kWh |
| season | string | – | summer = July–August tiers |
No output schema declared.
No examples provided.
kr_led_savings Korea LED replacement savings (household tiers or shop unit price) ~184
Korea LED replacement savings (household tiers or shop unit price). Same code as https://kwhmate.com/ko/led-savings/. Reference: 기준: 2026년 한전 주택용 저압 요금표(기타 계절) · 가게·사무실은 고지서 단가 직접 입력. Returns an estimate with the source and page URL.
| Name | Type | Req | Description |
|---|---|---|---|
| count | integer | – | – |
| hours_per_day | number | – | – |
| led_cost | number | – | – |
| mode | string | – | home = KEPCO progressive tiers, shop = unit_price × kWh |
| new_watts | number | – | – |
| old_watts | number | – | – |
| other_kwh | number | – | home: monthly use without these lights |
| unit_price | number | – | shop: KRW per kWh |
No output schema declared.
No examples provided.
naesin_grade 내신 등급 (Korean high-school class rank → grade, 5- or 9-grade system) ~136
내신 등급 (Korean high-school class rank → grade, 5- or 9-grade system). Same code as https://gyesanmate.com/naesin-grade/. Reference: 기준: 고교 내신 상대평가 누적 비율 · 최종 등급은 학교 성적표 기준. Returns an estimate with the source and page URL.
| Name | Type | Req | Description |
|---|---|---|---|
| rank | integer | yes | – |
| students | integer | yes | – |
| system | string | – | five = 2025 입학생부터, nine = 2024 이전 |
| ties | integer | – | 동석차 수(본인 포함) |
No output schema declared.
No examples provided.
ph_led_savings Philippines LED replacement savings (Meralco rates) ~146
Philippines LED replacement savings (Meralco rates). Same code as https://kwhmate.com/ph/led-savings/. Reference: Rates: Meralco residential rates, October 2026. Returns an estimate with the source and page URL.
| Name | Type | Req | Description |
|---|---|---|---|
| count | integer | – | Number of lights |
| hours_per_day | number | – | – |
| led_cost | number | – | Total cost of the LEDs (optional, for payback) |
| new_watts | number | – | Watts of one LED |
| old_watts | number | – | Watts of one old bulb/tube |
| other_kwh | number | – | Other monthly household use without these lights (kWh) |
No output schema declared.
No examples provided.
ph_meralco Philippines Meralco bill (this month's residential rate) ~82
Philippines Meralco bill (this month's residential rate). Same code as https://kwhmate.com/ph/meralco-bill-calculator/. Reference: Source: Meralco rate announcement for October 2026 · lifeline discounts and local taxes not included. Returns an estimate with the source and page URL.
| Name | Type | Req | Description |
|---|---|---|---|
| kwh | number | yes | – |
No output schema declared.
No examples provided.
report_reward 신고 포상금·보상금 (Korean whistleblower rewards: tax evasion, hidden assets, card refusal, public interest, corruption) ~214
신고 포상금·보상금 (Korean whistleblower rewards: tax evasion, hidden assets, card refusal, public interest, corruption). Same code as https://gyesanmate.com/reward/calculator/. Reference: 확인일 2026-10-12 · 출처: 국세기본법 시행령 제65조의4, 공익신고자 보호법 시행령 제22조, 부패방지권익위법 시행령 제77조 · 참고용 추정치. Returns an estimate with the source and page URL.
| Name | Type | Req | Description |
|---|---|---|---|
| amount | number | yes | KRW amount the reward is based on |
| kind | string | – | evasion = 탈세 제보(탈루세액등), hidden = 은닉재산(징수금액), card = 카드 결제 거부·현금영수증 미발급(거부금액), public = 공익신고, corruption = 부패신고(회복·증대 금액) |
No output schema declared.
No examples provided.
seoul_taxi Seoul taxi fare (regular mid-size taxi meter estimate) ~126
Seoul taxi fare (regular mid-size taxi meter estimate). Same code as https://koreasurvivalkit.com/taxi-fare-calculator/. Reference: Source: Seoul Metropolitan Government, mid-size taxi fares in effect since 1 February 2023 (checked September 2026). Returns an estimate with the source and page URL.
| Name | Type | Req | Description |
|---|---|---|---|
| hour | integer | – | Departure hour (late-night surcharge) |
| km | number | yes | – |
| outside_seoul | boolean | – | – |
| slow_traffic_minutes | number | – | Minutes at 15 km/h or less |
No output schema declared.
No examples provided.
student_loan 학자금대출 상환 (Korean student loan: standard repayment or income-contingent ICL) ~162
학자금대출 상환 (Korean student loan: standard repayment or income-contingent ICL). Same code as https://gyesanmate.com/student-loan-repayment/. Reference: 출처: 교육부고시 제2026-12호(2026학년도 2학기, 시행 2026.7.1) · 상환율은 최신 공지 확인. Returns an estimate with the source and page URL.
| Name | Type | Req | Description |
|---|---|---|---|
| defer_years | integer | – | – |
| degree | string | – | – |
| gross_salary | number | – | icl: annual gross salary |
| principal | number | – | – |
| rate_percent | number | – | – |
| repay_years | integer | – | – |
| type | string | – | – |
No output schema declared.
No examples provided.
suneung_score 수능 표준점수·등급 (Korean CSAT standard score and grade) ~154
수능 표준점수·등급 (Korean CSAT standard score and grade). Same code as https://gyesanmate.com/suneung-score/. Reference: 기준: 2027학년도 수능(한국교육과정평가원) · 실제 등급컷은 해마다 채점 결과로 달라짐. Returns an estimate with the source and page URL.
| Name | Type | Req | Description |
|---|---|---|---|
| english_raw | number | – | – |
| mean | number | – | – |
| percentile | number | – | – |
| raw | number | – | – |
| sd | number | – | – |
| subject | string | – | main = 국어·수학, inquiry = 탐구·제2외국어/한문 |
No output schema declared.
No examples provided.
travel_budget 국내 여행 예산 (Korea domestic trip budget: transport, stay, food, admission ranges) ~317
국내 여행 예산 (Korea domestic trip budget: transport, stay, food, admission ranges). Same code as https://gyesanmate.com/travel-budget/. Reference: 확인일 KTX 2026-10-12·고속버스 2026-10-13 · 출처: 국토교통부 발표(KTX), KOBUS 시간표조회(고속버스) · 결과는 추정치. Returns an estimate with the source and page URL.
| Name | Type | Req | Description |
|---|---|---|---|
| admission_max | number | – | – |
| admission_min | number | – | – |
| bus_grade | string | – | Express bus class (normal / deluxe 우등 / premium 프리미엄) for the built-in Seoul routes |
| car_km | number | – | – |
| car_km_per_l | number | – | – |
| fare | number | – | One-way fare per person you checked (empty = built-in fare: KTX Seoul–Busan and Yongsan–Gwangju-Songjeong base fares, and 9 Seoul express-bus routes from KOBUS) |
| food_max | number | – | – |
| food_min | number | – | – |
| from | string | – | – |
| fuel_price | number | – | – |
| mode | string | – | – |
| nights | integer | – | – |
| people | integer | – | – |
| rooms | integer | – | – |
| stay_max | number | – | – |
| stay_min | number | – | – |
| to | string | – | – |
| toll | number | – | – |
No output schema declared.
No examples provided.
tw_electricity Taiwan electricity bill (Taipower residential progressive rates) ~128
Taiwan electricity bill (Taipower residential progressive rates). Same code as https://kwhmate.com/tw/electricity-bill/. Reference: 依據：台灣電力公司 2025年10月1日起實施之住宅用累進電價（2026年電價審議會凍漲）. Returns an estimate with the source and page URL.
| Name | Type | Req | Description |
|---|---|---|---|
| bimonthly | boolean | – | two-month bill (brackets doubled) |
| kwh | number | yes | – |
| summer | boolean | – | June–September rates |
No output schema declared.
No examples provided.
tw_led_savings Taiwan LED replacement savings (Taipower non-summer, monthly brackets) ~162
Taiwan LED replacement savings (Taipower non-summer, monthly brackets). Same code as https://kwhmate.com/tw/led-savings/. Reference: 依據：台電住宅用累進電價（非夏月、單月級距）. Returns an estimate with the source and page URL.
| Name | Type | Req | Description |
|---|---|---|---|
| count | integer | – | Number of lights |
| hours_per_day | number | – | – |
| led_cost | number | – | Total cost of the LEDs (optional, for payback) |
| new_watts | number | – | Watts of one LED |
| old_watts | number | – | Watts of one old bulb/tube |
| other_kwh | number | – | Other monthly household use without these lights (kWh) |
No output schema declared.
No examples provided.
How do I install the Korea & Asia Everyday Calculators (kWhmate) MCP server?
Korea & Asia Everyday Calculators (kWhmate) is a hosted endpoint at https://kwhmate.com/api/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 · kwhmate.com
claude mcp add --transport http com-kwhmate-calculators 'https://kwhmate.com/api/mcp'
What is the Korea & Asia Everyday Calculators (kWhmate) MCP server?
Korea & Asia Everyday Calculators (kWhmate) is an MCP server listed in the public MCP registry as com.kwhmate/calculators. Free calculators with sources: electricity bills (KR/TW/PH/JP), Korea taxi fares, tax refunds. This page covers its hosted endpoint (https://kwhmate.com/api/mcp).
Is the Korea & Asia Everyday Calculators (kWhmate) MCP server safe to use?
Korea & Asia Everyday Calculators (kWhmate) scores 59 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 Korea & Asia Everyday Calculators (kWhmate) MCP server expose?
Korea & Asia Everyday Calculators (kWhmate) exposes 19 tools: kr_electricity, kr_led_savings, tw_electricity, tw_led_savings, ph_meralco, and 14 more. Their descriptions and schemas cost roughly 2,899 tokens of context every time the server is loaded.
Does the Korea & Asia Everyday Calculators (kWhmate) MCP server require authentication?
No. We connected to Korea & Asia Everyday Calculators (kWhmate) without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Korea & Asia Everyday Calculators (kWhmate) MCP server still maintained?
Korea & Asia Everyday Calculators (kWhmate) is still listed as active in the MCP registry. We last reached this channel on 18 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.