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CHECK24

Travelby CHECK24 GmbH
Open in ChatGPTWebsite

Germany’s largest comparison portal is now on ChatGPT.

Compare hotels, package vacations, rental cars, tires and rims directly in the chat and find the right offer. With just one click, you can view all details and conveniently complete your booking or purchase on CHECK24.

More comparisons coming soon—add the CHECK24 app and start saving today.

5ChatGPT Tools
CHECK24 GmbHDeveloper
TravelCategory

Available Tools

Chatgpt Tools-search Rims

chatgpt_tools-search_rims
Full Description

Such nach Felgen mit der Schlüsselnummer (HSN, TSN, VSN). Erfrage dafür die HSN TSN VSN vom Kunden, rufe das Tool auf, dann werden dem Kunden Passende Felgen für sein Auto angezeigt.

Parameters (3 required)
Required
rim_search_parametersobject

Optional filter parameters for rim search

vehicle_dataobject

Optional features of the car to identify it, instead of or additionally to the key number. Always provide all available information.

vehicle_key_numberobject

The vehicle key number (HSN, TSN, VSN) that uniquely identifies a vehicle in the database.

Chatgpt Tools-search Tires

chatgpt_tools-search_tires
Full Description

Reifensuche anhand von Größe, Saison und Filtern. Ergebnisse kommen im Reifen-Widget. Setze nur die Parameter, die der Benutzer explizit angegeben hat.

Parameters (18 required)
Required
diameterinteger

Tire diameter filter (e.g., 16, 17, 18)

euFuelEfficiencystring

EU fuel efficiency rating: 'A', 'B', 'C', 'D', 'E'. Always also shows better performing tires. Null for no filter.

euNoisestring

EU noise rating: 'A', 'B', 'C'. Always also shows better performing tires. Null for no filter.

euWetGripstring

EU wet grip rating: 'A', 'B', 'C', 'D', 'E'. Always also shows better performing tires. Null for no filter.

featuresarray

Tire features filter (rimProtection, reinforced, offroad, forElectricVehicle) & emergencyFeatures (runflat, seal)

gradeV2string

Minimum tire grade filter: 'okay', 'satisfactory', 'good', 'very_good', 'fabulous', 'outstanding', 'excellent'. Null for no filter.

heightinteger

Tire height/aspect ratio filter (e.g., 55, 60)

loadIndexinteger

Load index filter (e.g., 91, 95, 100)

maxPriceinteger

Maximum price filter in cents

minPriceinteger

Minimum price filter in cents

pageinteger

Page number for pagination (default: 1)

postalCodestring

Zip code for delivery location. Only needed if the user wants to book a fitting appointment, so we can search for fitting stations nearby.

seasonarray

Tire season filter (sommerreifen, winterreifen, ganzjahresreifen)

sortstring

Sort order: 'popularity' (default), 'priceAsc' for cheapest, 'grade' for best rated. Use 'priceAsc' ONLY when specifically requested ('cheaper than 90€' should be done with filter, not sort!)

speedIndexstring

Speed index filter (e.g., H, V, W, Y)

tireBrandarray

Tire brand filter as lowercase slug (e.g., michelin, continental)

tireBrandTypearray

Tire brand type filter (premium, brand, budget, budget_low)

widthinteger

Tire width filter (e.g., 205, 225)

Hotel-search-hotels

hotel-search-hotels
Full Description

Use this tool when the user wants to search for and explore different types of accommodations for a trip. The tool performs an accommodation search for a specified location with geographic coordinates (latitude and longitude of the location must always be provided), future travel dates, and room occupancy (rooms, number of adults, children including ages). Optional parameters such as minimum and maximum price (minPrice, maxPrice) can be applied to restrict results to a specific budget range. Prices are in Euro. In addition, natural-language user preferences (e.g., “4 Sterne Hotel mit Frühstück” or “Günstiges Hotel in Zentrumsnähe”) are automatically matched against available search filters and applied accordingly. The tool returns available accommodation options and displays them directly in an integrated slider view, including prices, photos, and guest ratings. Use this tool for accommodation discovery, availability checks, budget filtering and visual exploration, where search and result presentation are combined in a single step.

Parameters (11 required)
Required
arrivalDatestring

Start date for the hotel search

departureDatestring

End date for the hotel search

hotelIdstring/null
hotelNamestring/null
latitudenumber/null

Latitude of the location to search hotels for

locationNamestring

Name of the location to search hotels for

longitudenumber/null

Longitude of the location to search hotels for

maxPricenumber/null
minPricenumber/null
roomConfigurationarray

List of rooms

userPreferencesstring/null

Pauschalreise-travel Search Packages

pauschalreise-travel_search_packages
Full Description

[travel] Search package holidays (flight + hotel) worldwide. Departures from Germany only.

Required: Destination, dates (min. tomorrow), duration, travelers. Optional: Budget, board type, rating, amenities, airport. Note: Departure min. tomorrow. Booking via Check24.

Golden Prompt Examples (USE THIS TOOL FOR):

  • "Finde Pauschalreisen nach Mallorca im Juli 2025"
  • "Günstige Pauschalreisen nach Türkei unter 800€ All-Inclusive"
  • "Familienurlaub nach Italien für 2 Erwachsene und 2 Kinder (8, 10 Jahre)"
  • "Warme Pauschalreisen im Winter am Meer"
  • "Urlaub nach Griechenland mit Flug und Hotel"
  • "All-Inclusive nach Ägypten im Sommer"
  • "Familienurlaub nach Spanien"
  • "Pauschalreise nach Thailand ab München"

Negative Examples (DO NOT use this tool for):

  • "Finde Hotels in Berlin ohne Flug"
  • "Suche Flüge nach Mallorca"
  • "Was gibt es in Barcelona zu sehen?"
  • "Ferienhaus mieten auf Mallorca"
  • "Pauschalreisen ab New York nach Cancun"
  • "Package holidays from London to Spain"
Parameters (1 required)
Required
querystring

Natural language package holiday search query (flight + hotel) based on user wording; keep intent and constraints, avoid inventing specific dates or constraints.

Rentalcar-gpt-search-rentalcar

rentalcar-gpt-search-rentalcar
Full Description

*Purpose:* Use this tool when a customer wants to search, rent, or book a rental car. It can start a new search, adjust an existing search, sort offers, and apply filters.

*Capabilities:*

  • Start a new rental-car search.
  • Adjust an existing search (e.g., change dates, locations, car class).
  • Sort offers by one of: price, rating, renter_rating, popularity.
  • Apply filters via the filter parameter.

*Filter parameter (guidelines):*

  • Provide a short, plain-language summary of all desired criteria in the filter field.
  • Be concise; separate criteria with commas.

*Notes:*

  • If no specific filters are requested, leave filter empty.
  • Sorting options accepted exactly as: price, rating, renter_rating, popularity.
Parameters (10 required)
Required
agenumber

The age of the main driver of the rentalcar.

dropoff_datestring

The dropoff date of the rentalcar.

dropoff_locationstring

The dropoff location of the rentalcar.

dropoff_timestring

The dropoff time of the rentalcar - if no time is specified by the customer set to 10:00

filterstring

A text which includes all the criteria the customer wants so filter for in their rentalcar search.

pickup_datestring

The pickup date of the rentalcar.

pickup_locationstring

The pickup location of the rentalcar.

pickup_timestring

The pickup time of the rentalcar - if no time is specified by the customer set to 12:00

search_identifierstring

The search_identifier. Only present, when adjusting an existing search.

sort_keystring

The sorting of the offers - default sort_key ist 'popularity'

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