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Prices people actually paid, from official open data: homes, rents, fuel, energy, food, medicines.
Remote server: your requests and data go to proofprice.com. Claude Code: claude mcp add --transport http proofprice https://proofprice.com/api/mcp · Claude app: Settings → Connectors → Add custom connector.
The tools this server listed when we connected to it, in its own words.
pricepaid_border_prices — Use this when a user asks what traded goods are worth at the border, per kilogram, as declared to customs: for example what a country pays ppricepaid_broadband_prices — Use this when a user asks what home internet (fixed broadband at a given speed, with or without phone and TV) or a mobile data plan costs pepricepaid_car_prices — Use this when a user asks what people actually paid for the right to own or buy a car (an entitlement or quota certificate, a sale or an aucpricepaid_childcare_prices — Use this when a user asks what childcare costs parents: the price of a nursery, daycare, childminder or after-school place for a baby, toddlpricepaid_commercial_property — Use this when a user asks what shops, offices, workshops, warehouses or other commercial premises actually sold for, or what a plot of non-fpricepaid_construction_costs — Use this when a user asks what it costs to build a home or other building per square metre in Brazil (country BR), how much of that is materpricepaid_contract_prices — Use this when a user asks what governments, councils, hospitals or other public buyers actually paid for something (laptops, school meals, rpricepaid_diet_costs — Use this when a user asks how much it costs to eat healthily in a country, for example the cost of the cheapest healthy diet per person per pricepaid_energy_prices — Use this when a user asks what households pay for electricity or natural gas per kWh in Flanders, Belgium (supplier offers), Brazil, Switzerpricepaid_farm_gate_prices — Use this when a user asks what farmers received, per month, for a crop or animal product (wheat, barley, oats, canola, soybeans, corn, potatpricepaid_farm_prices — Use this when a user asks what farmers or wholesalers get for a food commodity (wheat, barley, maize, beef, pigs, lamb, chicken, eggs, milk,pricepaid_airfare_prices — Use this when a user asks what people actually pay for a flight between two cities or airports (for example JFK to LAX, or Chicago to Miami)pricepaid_fuel_prices_now — Use this when a user asks the current price of petrol, diesel, E10, E85, LPG or CNG near a place in Queensland, Western Australia, Brazil, Opricepaid_fuel_price_history — Use this when a user asks how pump prices have changed over recent days or weeks in a place, or whether fuel is getting cheaper. Returns thepricepaid_grocery_prices — Use this when a user asks what an everyday grocery item (milk, bread, eggs, butter, cheese, chicken, bananas, potatoes, sugar, tea, coffee, pricepaid_grocery_price_history — Use this when a user asks how the shop price of an everyday grocery item (eggs, milk, bread, coffee, beef...) has changed over time, or whetpricepaid_health_insurance_premiums — Use this when a user asks what compulsory basic health insurance costs per month under the approved tariffs, for example for an adult in a rpricepaid_home_sales — Use this when a user asks what homes actually sold for in a town or area, what a fair price for a home is, or how much property costs there,pricepaid_home_sales_history — Use this when a user asks how home sale prices have changed over time in a place, or whether homes are getting more or less expensive. Returpricepaid_home_upgrade_prices — Use this when a user asks what a home upgrade costs in France (historical survey) (country FR), England and Wales (heat pumps) (country GB),pricepaid_hotel_prices — Use this when a user asks what a hotel room costs per night, on average, in a country, region, province or city in Ontario, Canada (country pricepaid_insurance_prices — Use this when a user asks what insurance actually costs the people who hold it, for example what homeowners pay per year for flood insurancepricepaid_land_prices — Use this when a user asks what agricultural land (farmland, arable land or grassland) sells for, or what it costs to rent, per hectare in EUpricepaid_medical_prices — Use this when a user asks what a medical service or hospital stay costs, or what was actually paid for it, for example an office visit, an Mpricepaid_medicine_prices — Use this when a user asks what a medicine costs in a pharmacy, or how much of the price the health insurance reimburses, in Brazil (country pricepaid_price_levels — Use this when a user asks how expensive a country is compared with an international average, for everyday spending such as food, housing, trpricepaid_producer_prices — Use this when a user asks what farmers received at the farm gate, per year, for a crop or animal product (wheat, maize, rice, soybeans, potapricepaid_rent_prices — Use this when a user asks what rent tenants actually pay or have agreed for a home in a town, area or postcode, how much it costs to rent a pricepaid_state_property_rents — Use this when a user asks what rent was awarded, per month, for leasing state-owned land or buildings (a childcare centre, student hostel, spricepaid_supplementary_health_insurance — Use this when a user asks what supplementary (top-up, complementary) health insurance costs per month on average, for a reference person sucpricepaid_auction_prices — Use this when a user asks what used, surplus or seized goods (vehicles, heavy equipment, electronics, office furniture, tools and similar) wpricepaid_transport_fares — Use this when a user asks what a public transport journey costs under the published fare table, for example a metro ride of a given distancepricepaid_tuition_fees — Use this when a user asks what a university or college charges students per year (tuition or registration fees for a bachelor's or master's pricepaid_wholesale_fresh_food_prices — Use this when a user asks what the wholesale price of live pigs, cattle or chickens, fish, eggs or other fresh food is today in Australia (cpricepaid_wholesale_market_prices — Use this when a user asks what traders paid for vegetables or fruit (cabbage, tomatoes, cucumbers, onions, bananas, pineapples, guavas, melopricepaid_wholesale_power_prices — Use this when a user asks what electricity costs on the wholesale (day-ahead power exchange) market in Australia, Australia (gas), Switzerlapricepaid_wholesale_power_price_history — Use this when a user asks how wholesale electricity prices have changed over recent days or weeks in a country, or whether power is getting pricepaid_check_price — Use this before paying: when a user or agent has a proposed price for something (a rent, a home, a litre of fuel, a medicine, a contract) anpricepaid_coverage — Use this to see which countries and kinds of price the tools cover. It returns a short overview: for each tool the countries it answers for,Not tested by KitScout yet. When our harness runs it, pros, cons and the tasks we tried appear here, with the date and evidence.