MCP servers › eu.kalkulo › calculators
MCP server · registry snapshot 2026-10-23 · last tested 2026-10-23
eu.kalkulo/calculators
Read-only European tax, salary and benefit calculators with official sources and unknowns. — the publisher's description
Summary
eu.kalkulo/calculators is a remote MCP server listed in the official MCP registry at version 1.0.0. On 2026-10-23 ProtocolProbe connected to it in read-only mode and read its inventory: 11 tools, 0 resources and 0 prompts.
Record checks
1 of 2 record checks met · 7 do not apply
- met: Registry entry is active and says how to run it
- not met: Source repository link opens
- not applicable: Repository is not archived
- not applicable: Code pushed to the repository in the 90 days before our check
- not applicable: Repository publishes a security policy (SECURITY.md)
- not applicable: Package names its licence with a standard (SPDX) identifier
- not applicable: The version the registry lists can be installed and is not withdrawn
- not applicable: npm package carries build provenance (attestation)
- not applicable: No known critical or high advisory in the package or its dependencies
- Not ranked by downloads: a remote server publishes no download figure
- Not ranked by stars: no public GitHub repository
From public records, not a safety rating. Each check with its reason
Key facts
- Runs
- remote (hosted by the publisher)
- Transport
- streamable HTTP
- Sign-in
- none needed to open a session
- Tools
- 11
- Described as changing data
- 0 of 11 toolsAI-classified
- Mainly works on
- nothing outside itself: it only answers questionsAI-classified
- Topic
- finance-and-paymentsAI-classified
- Pricing
- freeAI-classified
- Last tested
- 2026-10-23
How fresh this is
- Live-tested
- yes, a real session (not a text-only review)
- Last tested
- 2026-10-23
- Mode
- read-only (no tool calls)
- Latest version
- 1.0.0, published 2026-10-05 (registry, as of the 2026-10-23 snapshot)
- First listed version
- 2026-10-05 (earliest version still in the registry; older removed versions would be earlier)
- Registry data
- snapshot 2026-10-23
- Package and repository
- checked 2026-10-22
- Engine
- mcp-runtime-engine@0.1.0 · sdk@1.32.0
Changes since the last refresh
New in the registry: not in the list of 2026-10-04, listed on 2026-10-23 with version 1.0.0 (published 2026-10-05).
Source: the official MCP Registry list on 2026-10-04 and on 2026-10-23.
What it is
What does this server offer?
Observed inventoryWhat it mainly works on, as our AI model read its tool descriptions: nothing outside itself: it only answers questions.
None of its 11 tools are described as changing anything.
“Lists the Kalkulo.eu calculators available as tools here, with country, rules year, last update, page URL and the tool name to call.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
Takes no inputs.
- greece_unemployment_benefit
“Regular DYPA unemployment benefit for common unemployed people in Greece, amounts from 2026-04-01: daily and monthly amount by earnings category, dependant supplement, duration in daily allowances, s…”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
15 inputs, 1 required
katigoriastring“Ποια περίπτωση σας αφορά; Ο υπολογιστής καλύπτει την αρχική τακτική επιδότηση κοινών ανέργων.”protiForaIperigoumenastring“Πρώτη φορά ή επαναληπτική επιδότηση; Στην επαναληπτική επιδότηση ισχύει όριο 400 ημερησίων επιδομάτων στην τετραετία πριν από την έναρξη της νέας επιδότησης.”imeresAsfalisisnumberrequired“Ημέρες ασφάλισης (τελευταίο 14μηνο) Ημέρες ασφάλισης (ημερομίσθια) στο κρίσιμο 14μηνο πριν από τη λήξη της εργασίας, χωρίς τους δύο τελευταίους μήνες.”protiEtisiesstring“Έχετε 80 ημέρες ασφάλισης σε καθένα από τα δύο προηγούμενα έτη; Προϋπόθεση της πρώτης επιδότησης, και στη διαδρομή του 14μήνου και στη διαδρομή της διετίας.”imeresDietiasnumber“Ημέρες ασφάλισης στη διετία (μόνο αν στο 14μηνο έχετε κάτω από 125) Ημέρες στα δύο έτη πριν από τη λήξη της εργασίας, χωρίς τους δύο τελευταίους μήνες.”tetraetiaMetrisistring“Γνωρίζετε τα ημερήσια επιδόματα που λάβατε στην τετραετία; Το όριο των 400 μετριέται στην τετραετία πριν από την έναρξη της νέας επιδότησης.”imeresEpidotisisTetraetiasnumber“Ημερήσια επιδόματα που λάβατε στην τετραετία πριν από την έναρξη της νέας επιδότησης Ο αριθμός που καταγράφει η ΔΥΠΑ για τα τέσσερα χρόνια πριν από την έναρξη …”synolikes4050string“Συνολικές ημέρες εργασίας σε όλο τον εργασιακό βίο Με 4.050 ημέρες ή περισσότερες η διάρκεια γίνεται 12 μήνες.”ilikia49string“Έχετε κλείσει τα 49 κατά την υποβολή της αίτησης; Με συμπληρωμένο το 49ο έτος και τουλάχιστον 210 ημέρες στο 14μηνο (ή 350 στη διετία) η διάρκεια γίνεται 12 μή…”apasxolisistring“Είδος απασχόλησης Η πλήρης απασχόληση δίνει πάντα το πλήρες ποσό.”mesesApodochesnumber“Μέσες μικτές μηνιαίες αποδοχές τελευταίου εξαμήνου Πάνω από 493,08 € → πλήρες ποσό· 246,55–493,08 € → 75%· έως 246,54 € → 50%.”teknanumber“Προστατευόμενα μέλη (έμμεσα ασφαλισμένα μέσω εσάς) Σύζυγος, παιδιά ή άλλα μέλη που είναι έμμεσα ασφαλισμένα μέσω σας.”sizygosstring“Αν επιδοτείται και ο/η σύζυγος, ποιος λαμβάνει την προσαύξηση; Για τα ίδια μέλη και την ίδια περίοδο η προσαύξηση δεν δίνεται δύο φορές.”imerominiaLysisstring“Ημερομηνία λήξης ή λύσης της εργασίας Από αυτήν μετράνε η προθεσμία των 60 ημερών και η έναρξη της επιδότησης.”imerominiaAitisisstring“Ημερομηνία αίτησης στη ΔΥΠΑ Αν η αίτηση γίνει μέσα στις πρώτες 7 ημέρες, η επιδότηση ξεκινά την 7η ημέρα· αλλιώς ξεκινά την ημέρα της αίτησης.”
- estonia_redundancy_compensation
“Statutory redundancy compensation in Estonia: the employer's one month of average wages (Employment Contracts Act § 100(1)), the Unemployment Insurance Fund (Töötukassa) benefit by length of employme…”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
21 inputs, 3 required
lopetamiseAlusstring“Töösuhte lõppemise alus Kalkulaator arvutab koondamise (TLS § 89) ja töötaja ülesütlemise pärast töötasu vähendamist (TLS § 37 lg 5).”keskmiseViisstring“Kuidas tööandja keskmine töötasu on teada?”tooandjaKeskminenumber“Tööandja arvestatud keskmine kuutöötasu (bruto) Keskmine töötasu määruse nr 91 järgi: tavaliselt kuue eelneva kalendrikuu väljateenitud töötasu põhjal.”perioodiTasunumber“Perioodi arvesse minev töötasu (bruto) Kuue eelneva kalendrikuu jooksul välja teenitud ja sissenõutavaks muutunud töötasu (määrus nr 91 § 2 lg 2).”perioodiTooPaevadnumber“Perioodi kalendaarsed tööpäevad Tööpäevad tööpäevade kalendri järgi (esmaspäevast reedeni, riigipühad välja arvatud), mitte ainult päevad, mil töötasid.”valjaArvatudPaevadnumber“Välja jäetavad tööpäevad Ainult päevad, mille määrus välja jätab: tööst keeldumine TLS § 19 alusel, töötasu vähendamise päevad TLS § 37 alusel ja haigusleht tö…”perioodiKuudnumber“Perioodi kalendrikuude arv Tavaliselt 6.”tooAlgusstringrequired“Töösuhte algus selle tööandja juures Katkematu töösuhte esimene päev.”tooLoppstringrequired“Töösuhte viimane päev Töölepingu lõppemise päev.”tootukassaKeskminenumberrequired“Töötukassa arvutusalus: keskmine kuutöötasu (bruto) Töötukassa arvutab selle ise oma andmetest (viimasele kolmele kuule eelnenud üheksa kuu tasud), seega võib …”etteteataminestring“Kas tööandja teatas ülesütlemisest piisavalt ette?”etteteatamisTahtaegstring“Milline etteteatamistähtaeg sinu kohta kehtib?”kollektiivlepinguPaevadnumber“Kollektiivlepingu etteteatamistähtaeg (kalendripäevi) Kollektiivlepingus sinu töösuhte kestuse kohta kokku lepitud etteteatamise aeg kalendripäevades.”tooPaevaTasunumber“Keskmine tööpäevatasu (bruto) Tööandja arvestatud keskmine ühe tööpäeva tasu (määrus nr 91 § 3 lg 1).”puuduvadTooPaevadnumber“Tööpäevad, mille võrra vähem ette teatati Loe tööpäevi, mitte kalendripäevi (TLS § 100 lg 5).”netoVaadestring“Kas näidata ka kättesaadavat summat (neto)?”iiSammasstring“Kogumispensioni (II samba) makse määr Määra näed Pensionikeskuse kontolt.”maksuvabaTooandjastring“Maksuvaba tulu tööandja väljamaksel Maksuvaba tulu on kuni 700 € kuus (vanaduspensionieas 776 €) ja seda saab kasutada ühe korra kuus.”maksuvabaJaaknumber“Kasutamata maksuvaba tulu sel kuul Summa, mida tööandja saab selle kuu väljamaksel veel maha arvata (kuni 700 €, vanaduspensionieas kuni 776 €).”maksuvabaTootukassastring“Maksuvaba tulu Töötukassa väljamaksel Töötukassa arvab maksuvaba tulu maha ainult sinu avalduse alusel.”maksuvabaTkSummanumber“Töötukassa väljamaksel maha arvatav maksuvaba tulu Avalduses märgitud ja sel kuul kasutamata summa, kuni 700 € (vanaduspensionieas kuni 776 €).”
- slovakia_rental_income_tax
“Slovak personal income tax on property rental income for 2026 under § 6(3) of the Income Tax Act: the €500 exemption, proportional expenses, tax base, tax across the 19/25/30/35 % bands, and whether …”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
23 inputs, 1 required
vlastnictvostring“Komu nehnuteľnosť patrí?”podielnumber“Váš podiel na príjmoch (%) Pri BSM dohodnutý pomer, bez dohody 50 %.”prijemnumberrequired“Nájomné za rok 2026 (€) Nájomné zo všetkých vašich prenajímaných nehnuteľností za rok 2026 podľa § 6 ods.”vydavkyRezimstring“Ako zadáte výdavky?”vydavkynumber“Daňové výdavky k prenájmu (€) Súčet daňových výdavkov pred pomerným krátením, vrátane energií a služieb, ktoré ste zahrnuli do príjmov.”odpisynumber“Z toho odpisy a iné nepeňažné výdavky (€) Časť výdavkov, ktorú ste v hotovosti nezaplatili (napr.”vydavkyOverenestring“Spĺňajú zadané výdavky podmienky ZDP?”obchodnyMajetokstring“Je nehnuteľnosť zaradená do obchodného majetku?”energieRezimstring“Kto má zmluvu s dodávateľmi energií a služieb?”energiePrijatenumber“Platby nájomcu za energie a služby, ktoré ste dostali navyše k nájomnému (€) Ak sú energie zahrnuté v nájomnom, zadajte 0.”energieZaplatenenumber“Vaše platby dodávateľom energií a služieb (€) Elektrina, teplo, voda, plyn a služby spojené s užívaním (odpad, upratovanie, výťah, internet, správa domu).”energieNajomcaPriamonumber“Platby nájomcu priamo dodávateľom na vašu zmluvu (€) Tieto platby sú váš nepeňažný príjem a zároveň daňový výdavok v rovnakej sume; vašu hotovosť nemenia.”fondOpravnumber“Preddavky do fondu prevádzky, údržby a opráv (€) Zaplatené preddavky správcovi alebo spoločenstvu vlastníkov.”majetokVydavkynumber“Opravy, poistenie, daň z nehnuteľností a úroky z úveru (€) Zaplatené v hotovosti.”odpisyMajetoknumber“Odpisy nehnuteľnosti (€) Daňové odpisy za rok 2026.”zabezpekaStavstring“Ponechali ste si v roku 2026 časť zábezpeky (kaucie)?”zabezpekaSumanumber“Ponechaná suma zábezpeky (€) Suma, na ktorú ste v roku 2026 získali právo.”energopomocnumber“Energopomoc (energopoukážky) k prenajímanej nehnuteľnosti (€) Ak ste energie tejto nehnuteľnosti uplatnili ako výdavok, je energopomoc príjmom z prenájmu; inak…”najomcaZhodnotenienumber“Nepeňažný príjem zo zhodnotenia alebo opráv, ktoré urobil nájomca (€) Technické zhodnotenie alebo opravy nad rámec zmluvy, ktoré ste nájomcovi neuhradili (§ 17…”oslobodenieStavstring“Koľko z oslobodenia 500 € vám zostáva?”pouziteOslobodenienumber“Už použitá časť oslobodenia (€) Suma oslobodenia, ktorú ste v roku 2026 uplatnili na iné príjmy (0 až 500 €).”ineZdanitelnePrijmystring“Máte v roku 2026 aj iné zdaniteľné príjmy?”ostatnyZakladnumber“Ostatný základ dane podľa § 4 ods.”
- greece_annual_leave
“Statutory annual leave days in Greece for 2026 (5- or 6-day week, with seniority increments) and the gross leave allowance for monthly-salaried employees in at least their third calendar year with th…”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
7 inputs
etosProslipsisstring“Πότε προσληφθήκατε στον τρέχοντα εργοδότη; Κρίνει ποιο ημερολογιακό έτος απασχόλησης είναι το 2026.”etiYpiresiasnumber“Συμπληρωμένα έτη στον τρέχοντα εργοδότη Ακέραια έτη.”proypiresiaAlloustring“Έχετε προϋπηρεσία σε άλλους εργοδότες; Τα όρια των 12 και των 25 ετών μετρούν τη συνολική υπηρεσία σε όλους τους εργοδότες (ΕΓΣΣΕ 2000–01 άρθρο 6, ΕΓΣΣΕ 2008–0…”etiSynolikanumber“Συνολικά έτη υπηρεσίας (όλοι οι εργοδότες, μαζί με τον τρέχοντα) Περιλαμβάνει και τα έτη στον τρέχοντα εργοδότη, οπότε δεν μπορεί να είναι λιγότερα από αυτά.”imeresEvdomadastring“Σύστημα εβδομαδιαίας εργασίας Πενθήμερο: 20 έως 22 ημέρες (25 ή 26 με αρχαιότητα).”amoivistring“Τρόπος αμοιβής Για ημερομίσθιους και ωρομίσθιους το όριο του επιδόματος είναι 13 ημερομίσθια και το ποσό δεν υπολογίζεται εδώ.”miniaiosMisthosnumber“Τακτικές μηνιαίες μικτές αποδοχές Ο μικτός μηνιαίος μισθός μαζί με τα επιδόματα και τις προσαυξήσεις που καταβάλλονται τακτικά (άρθρο 222 Π.δ.”
- serbia_vat
“Serbian VAT in both directions: add VAT to a net amount or extract VAT from a gross amount, at the 20 % general or 10 % special rate (Article 23 of the VAT Law).”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
3 inputs, 1 required
iznosnumberrequired“Iznos (RSD) Kod opcije „Dodaj PDV na osnovicu" iznos je osnovica (bez PDV-a).”smerstring“Smer obračuna „Dodaj PDV na osnovicu" računa od neto osnovice (bez PDV-a → sa PDV-om).”stopanumber“Stopa PDV-a Opšta (standardna) stopa 20% primenjuje se na većinu dobara i usluga.”
- luxembourg_unemployment_benefit
“Luxembourg full unemployment benefit (ADEM) with 2026 parameters: 80 % of the average gross salary of the last three months (85 % with a dependent child), capped by multiples of the unskilled social …”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
2 inputs, 1 required
salaireBrutMoyennumberrequired“Salaire brut moyen (3 derniers mois) Moyenne mensuelle du salaire brut des 3 mois précédant le chômage, hors 13e mois éventuel”enfantAChargestring“Enfant à charge Bénéficiez-vous de la modération d'impôt pour un ou plusieurs enfants ?”
- slovakia_severance_pay
“Slovak statutory minimum severance pay (odstupné, Labour Code § 76), wage compensation on immediate termination by the employee (§ 69), the retirement allowance (odchodné, § 76a) and the minimum noti…”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
9 inputs, 3 required
priemernyMesacnyZaroboknumberrequired“Priemerný mesačný zárobok (PMZ) Priemerný mesačný zárobok podľa §134 Zákonníka práce, ktorý zamestnávateľ zisťuje spravidla z predchádzajúceho kalendárneho štv…”sposobstring“Spôsob skončenia pracovného pomeru Odstupné podľa §76 patrí len pri výpovedi zo strany zamestnávateľa alebo pri dohode, a to z dôvodov uvedených nižšie.”dovodstring“Dôvod skončenia uvedený vo výpovedi alebo v dohode Zákonné odstupné zakladajú len dôvody podľa §76 ods.”vynimkaUrazstring“Uplatní sa výnimka z §76 ods.”okamziteSplnenestring“Je okamžité skončenie platné podľa §69 a §70?”zaciatokstringrequired“Začiatok pracovného pomeru Deň nástupu do tohto pracovného pomeru.”skonceniestringrequired“Deň skončenia pracovného pomeru Pri dohode dohodnutý deň skončenia (nemusí to byť deň podpisu), pri výpovedi posledný deň výpovednej doby.”doruceniestring“Deň doručenia výpovede Výpovedná doba sa určuje podľa trvania pomeru ku dňu doručenia a začína plynúť prvým dňom nasledujúceho mesiaca (§62 ods.”odchodnestring“Máte nárok na odchodné (§76a)?”
- czechia_company_car_benefit
“Czech taxable benefit for private use of a company car in 2026: 1 %, 0.5 % or 0.25 % of the vehicle's input price including VAT by emission category, and the resulting monthly increase in the income-…”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
3 inputs, 2 required
inputPricenumberrequired“Vstupní cena vozidla (vč.”emisniKategoriestring“Emisní kategorie vozidla Běžné 1 %, nízkoemisní (do 50 g CO2/km) 0,5 %, bezemisní (elektromobil, vodík) 0,25 % Options: ordinary = Běžné vozidlo (1 %); low = N…”hrubaMzdanumberrequired“Hrubá měsíční mzda Hrubá mzda bez auta — určuje mezní sazbu daně (15/23 %) a využití stropu pojistného”
- latvia_vacation_pay
“Latvian vacation pay for 2026, gross and net: average daily earnings times vacation days, less employee social insurance (VSAOI 10.5 %) and personal income tax with the €550 monthly non-taxable minim…”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
4 inputs, 2 required
atvalinajumaDienasnumberrequired“Atvaļinājuma darba dienas Darba dienu skaits, par kurām aprēķina atvaļinājuma naudu (parasti tikai darba dienas, ne brīvdienas vai svētku dienas).”menesaAlganumberrequired“Mēneša bruto alga Mēneša bruto alga (pirms nodokļiem).”sesuMenesuAlganumber“Pēdējo 6 mēnešu darba samaksas kopsumma (neobligāti) Ja zināma, ievadi pēdējo 6 mēnešu kopējo bruto darba samaksu (alga + piemaksas + prēmijas).”nostradatasDienasnumber“Faktiski nostrādātās darba dienas pēdējos 6 mēnešos Vidējo dienas izpeļņu rēķina no faktiski nostrādātajām dienām (Darba likuma 75.”
- malta_vacation_leave
“Statutory vacation leave in Malta for 2026 in hours: the 192-hour base plus 24 hours for the three 2026 public holidays that fall on a weekend, pro-rated for part-time hours and a partial year of ser…”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
3 inputs, 2 required
weeklyHoursnumberrequired“Weekly hours worked Average normal weekly hours.”monthsWorkednumberrequired“Months worked in 2026 Number of months employed during the year.”leaveTakenHoursnumber“Leave already taken Vacation leave hours already used so far this year.”
Each quoted sentence is the first sentence of the publisher’s own description. The kind of tool and the “changes data” mark are our AI model’s reading of that description, not something we tested: two differently worded runs had to agree, otherwise no label is shown, and nobody has checked them by hand. A tool without the “changes data” mark is described as only reading, searching or calculating, or the two runs did not agree. No tool was called. Read the publisher’s full description before relying on it. “Publisher declares” lists the hints the server itself sends with the tool (MCP annotations: read-only, destructive, idempotent, open-world); they are the publisher's claims, not checked by us. Inputs are the parameters in the tool's own input schema: name, declared type, whether it is required, and the first sentence of its description. Read 2026-10-23.
How well are its tools described?
Features #4 and #5
How clearly this server's own tool descriptions say what a tool does, and how consistent its tool list is. The first part is an AI model's yes/no reading of each description; the second part is counted. We do not turn it into a grade.
Descriptions
AI reading of each description
- Says what the tool does
- 100% of 11 tools
- Says what it returns
- 100% of 11 tools
- States limits, defaults or errors
- 0% of 11 tools
- Says when to use it
- 0% of 11 tools
- Items covered per tool
- 2.0 of 4 on average
Counted from the listing
- Parameters with a description
- 100% of 90
- Tools with a description
- 100% of 11
- Typical description length
- 488 characters
The tool set
Counted from the listing
- Tools
- 11
- Size of the list
- about 10,962 tokens for an agent to load (characters ÷ 4)
- Naming
- 11 of 11 names use snake_case
AI reading: easy to mix up
No pair found.
The AI items cover 11 of 11 tools: for a tool where two differently worded runs disagreed, that item is left out. They were not checked by hand, and no tool was called. “Easy to mix up” means two tools whose names or descriptions overlap without saying how they differ; the AI found none. We do not rate whether the tool set is complete or whether side effects are spelled out, because our AI reading of those was not reliable enough.
How do I add it to my client?
Config from the registry entry
From the remote endpoint (Streamable HTTP)
We connected to this URL on 2026-10-23 (a read-only session: no tool was called).
Add to CursorAn install link in the format Cursor documents, holding the Cursor config below.
Claude Desktop or claude.ai
Settings → Connectors → Add custom connector, then paste: https://kalkulo.eu/mcp
Cursor · .cursor/mcp.json in a project, or ~/.cursor/mcp.json
{
"mcpServers": {
"calculators": {
"url": "https://kalkulo.eu/mcp"
}
}
}VS Code · .vscode/mcp.json
{
"servers": {
"calculators": {
"type": "http",
"url": "https://kalkulo.eu/mcp"
}
}
}VS Code (command line) · Bash or zsh terminal (macOS, Linux)
code --add-mcp '{"name":"calculators","type":"http","url":"https://kalkulo.eu/mcp"}'Claude Code
claude mcp add --transport http calculators https://kalkulo.eu/mcp
Try it in the MCP Inspector · runs on your machine, opens in your browser · Node 22.19+
npx @modelcontextprotocol/inspector@2.11.0 --server-url https://kalkulo.eu/mcp --transport http
- The server runs on the operator's infrastructure; it may ask you to sign in when you first connect.
- The MCP Inspector lists the server's tools, resources and prompts; a tool you call there runs for real.
Built from the server's registry entry with each client's documented format (checked 2026-10-14; the Cursor link and the VS Code command 2026-10-19; the MCP Inspector command 2026-10-21). Values in < > are yours to fill in; this page never contains a key. Where the server needs a setting the entry does not declare, it can still fail to start.
Does the registry listing match what we found?
Feature #6The registry verifies a package once, when it is published, and does not re-check it. A difference below is about the listing, not a judgement of the publisher.
| Registry says | We found | Result | Source · date |
|---|---|---|---|
| Remote endpoint kalkulo.eu/mcp | Session opened | matches | our test · 2026-10-23 |
| No credential declared as required | Opened a session without any credential | matches | our test · 2026-10-23 |
Choosing
Record checks
Public records · not a safety rating1 of 2 record checks met · 7 do not apply
- Not ranked by downloads: a remote server publishes no download figure
- Not ranked by stars: no public GitHub repository
- MetRegistry entry is active and says how to run itActive, with a package or a remote address.
- Not metSource repository link opensThe registry entry gives no repository link.
- Does not applyRepository is not archivedNo public GitHub repository to read.
- Does not applyCode pushed to the repository in the 90 days before our checkNo public GitHub repository to read.
- Does not applyRepository publishes a security policy (SECURITY.md)No public GitHub repository to read.
- Does not applyPackage names its licence with a standard (SPDX) identifierRemote server: it ships no package.
- Does not applyThe version the registry lists can be installed and is not withdrawnRemote server: it ships no package.
- Does not applynpm package carries build provenance (attestation)Remote server: it ships no package.
- Does not applyNo known critical or high advisory in the package or its dependenciesRemote server: it ships no package.
Read from public records only: the registry entry, npm/PyPI, GitHub and advisory databases, checked 2026-10-22. No tool was called. Only “met” and “not met” are counted, so the total differs between servers; a check that does not apply or that we could not run is listed, never counted against it. It is not a safety rating. How each check works · Leaderboards
Common questions about eu.kalkulo/calculators
Answered from the data aboveIs eu.kalkulo/calculators free to use?
Its website (kalkulo.eu/) describes a free pricing model. This is an AI-classified reading of the page on 2026-10-23, so check the page itself before relying on it.
Does eu.kalkulo/calculators need an API key or sign-in?
It opened a session without any credential on 2026-10-23. The registry entry declares no required credential; no declaration is not a guarantee.
Has eu.kalkulo/calculators been security tested?
Partly. 2 of the 14 checks that apply to it were exercised. We connected and read what the server declares, but did not call its tools: ProtocolProbe calls no server's tools for anything it publishes. This is our choice, not a block by the server. No security verdict is published before verification.
What can eu.kalkulo/calculators do?
It lists 11 tools. In our AI model's reading of their descriptions (two runs had to agree, nobody checked it by hand), they include tools that read or search. We did not call any tool, so this describes the text, not the behaviour.
Can eu.kalkulo/calculators change or delete data?
None of its 11 tools is described as changing anything (our AI model's reading of the descriptions; nobody checked it by hand). We did not call any tool.
Found this page useful?
Anonymous · no sign-inA quick, anonymous reaction — no account, no email. One per kind from your browser. The tally updates when the page is next refreshed, and it is only a rough count, never a safety rating or a measured number of people.
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Active servers whose topic is also “finance-and-payments” and that have at least one tool of the same kind; most kinds in common first, then most GitHub stars. The topic and the tool kinds are an AI model's reading of the publishers' descriptions, not checked by hand. Similar is not a recommendation.
Compare with another server
Side by side: registry entry, our read-only session, the tools and the 18 classification fields. Same values as each page; no score.
Security testing
What did we test, and what did we leave out?
18 checks · features #1, #2
Not probed (we call no server's tools)
We connected and read what the server declares, but did not call its tools: ProtocolProbe calls no server's tools for anything it publishes. This is our choice, not a block by the server. No security score is given; a check we did not run is never counted as passed.
- Inventory: exercised
- Hidden instructions: exercised
- Real execution: not run · our policy
- Secret leak: not run · nothing to check it against
- Internal addresses: not run · our policy
- Unconfirmed changes: not run · our policy
- Bad input: not run · our policy
- Model requests: not run · nothing to check it against
- Sensitive questions: not run · nothing to check it against
- Folder boundary: not run · our policy
- Log leaks: not run · nothing to check it against
- Hidden content: not run · nothing to check it against
- Fake assistant turns: not applicable
- Token passthrough: not applicable
- Token audience: not applicable
- Sign-in redirect: not run · our policy
- Consent handling: not testable from outside
- Sign-in metadata: not applicable
2 exercised12 not run (reason given)4 not applicable
Each check ends in exactly one state: exercised, not run (with the reason), or not applicable (with the reason). 2 of the 14 checks that apply to it were exercised. We do not publish security-check outcomes for named servers.
- 1Inventory
tool-listReads the declared tools, resources and prompts.exercised - 2Hidden instructions
description-poisoningLooks for hidden instructions in tool descriptions.exercised
- 3Real execution
real-executionCalls a tool and checks what really happens.This check calls the server's tools. ProtocolProbe calls no server's tools for anything it publishes; an operator can run this check on their own server with our self-test command.not run · our policy - 4Secret leak
canary-leakPlants a fake secret and checks whether it leaks.This check needs at least one successful tool call to have something to check, and no tool was called.not run · nothing to check it against - 5Internal addresses
ssrfChecks whether a tool can be steered to internal addresses.This check calls the server's tools. ProtocolProbe calls no server's tools for anything it publishes; an operator can run this check on their own server with our self-test command.not run · our policy - 6Unconfirmed changes
write-without-confirmationChecks whether tools that change data act without asking.This check calls the server's tools. ProtocolProbe calls no server's tools for anything it publishes; an operator can run this check on their own server with our self-test command.not run · our policy - 7Bad input
error-handlingSends bad input and watches how the server answers.This check calls the server's tools. ProtocolProbe calls no server's tools for anything it publishes; an operator can run this check on their own server with our self-test command.not run · our policy - 8Model requests
samplingChecks whether the server asks the client's model to act for it.This check needs at least one successful tool call to have something to check, and no tool was called.not run · nothing to check it against - 9Sensitive questions
elicitation-sensitive-dataChecks whether the server asks users for sensitive data.This check needs at least one successful tool call to have something to check, and no tool was called.not run · nothing to check it against - 10Folder boundary
root-boundaryChecks whether the server reaches outside the folders it was given.This check calls the server's tools. ProtocolProbe calls no server's tools for anything it publishes; an operator can run this check on their own server with our self-test command.not run · our policy - 11Log leaks
logging-side-channelChecks whether log messages carry data they should not.This check needs at least one successful tool call to have something to check, and no tool was called.not run · nothing to check it against - 12Hidden content
audience-hidingChecks resources that hide content from the user.This check needs content the server returns, and nothing was read or called.not run · nothing to check it against - 16Sign-in redirect
open-redirectChecks the sign-in redirect for abuse.Testing the sign-in redirect means sending probes to the operator's sign-in service, which we do not do.not run · our policy - 17Consent handling
confused-deputyChecks consent handling when one service acts for another.Depends on the operator's own consent screen, which differs per server and cannot be tested from outside.not testable from outside
- 13Fake assistant turns
fake-assistant-turnChecks prompts that pose as the assistant's own words.The server exposes no prompts.not applicable - 14Token passthrough
token-passthroughChecks whether the server forwards a user's token to other services.The server opened a session without sign-in, so there is no token flow to check.not applicable - 15Token audience
token-audience-validationChecks whether tokens meant for another service are accepted.The server opened a session without sign-in, so there is no token flow to check.not applicable - 18Sign-in metadata
oauth-url-schemeChecks the published sign-in metadata for unsafe URLs.No sign-in (OAuth) metadata is published, so there are no sign-in addresses to check.not applicable
Source: our own test, 2026-10-23, mcp-runtime-engine@0.1.0. Which checks count and why follows our published scoring model.
What happened during the test?
Feature #8
The steps in order, as the test record holds them.
- 0 msStarted a read-only session with the server's remote endpoint
- 482 msConnected after 0 redirects. No credential was sent or needed.
- Read the inventory: 11 tools, 0 resources, 0 prompts.
- 2,225 msFinished: 2 checks exercised.
Reference
How is it classified?
18 fields
One value per field, each with its source. Fields written by AI models are marked. A field with no value says why.
“Free country-specific calculators for salary, tax, VAT, loans, property and leave across 22 markets.”
“Not stated” means the source did not state it; “does not apply” means it does not apply to this kind of server; “our limit” means our own lookup failed. A linked value opens the directory filtered to the same value.
Cite or correct this page
Sources and corrections
Suggested citation
ProtocolProbe. “eu.kalkulo/calculators: MCP server record.” Data checked 2026-10-23. https://protocolprobe.com/mcp/servers/eu.kalkulo/calculators
Figures are valid for the date shown. Our facts on this page are CC BY 4.0: reuse them with a link and the check date. Quoted text (the publisher’s descriptions, website quotes, tool names) is not ours to license.
As JSON: this record in the API · API documentation.
Badge for your README
[](https://protocolprobe.com/mcp/servers/eu.kalkulo/calculators)
It shows this server's record-check count: facts from public records, no tool called. It is not a security rating or a pass. It links here and updates after each data reload.
Something wrong, or is this yours?
If a fact here is wrong, tell us and we will re-check it. If you operate this server, you can run our checks on it yourself with the free self-test command; we call no server’s tools ourselves for anything shown here.
Write to hello@protocolprobe.com · corrections log · methodology