meineSIM

Use this when the user asks which phones meineSIM covers, or before a search when it is unclear whether a phone is covered. Returns every phone with at least one verified contract offer, its storage sizes, the number of offers and the lowest total cost. Do not use it to compare offers, use search_phone_contract_offers for that.

list_supported_phones

Use this when the user wants a specific phone together with a mobile contract in Germany ("Handy mit Vertrag"), for example the lowest total cost for a Galaxy S26 on the Telekom network. Returns up to 5 verified offers ordered by total cost over the contract term, each with monthly price, one-time phone payment, connection fee, total cost, seller and check date. Also use for follow-up refinements of a phone-and-contract search, such as "davon nur Telekom" or "mit 512 GB". Repeat the search with the previous phone and unchanged user filters; replace or remove only criteria the user changes. A network request changes network, not provider. Returned offers include offer_id for get_offer_details when the user asks about one offer's costs or conditions. Do not use it for tariffs without a phone (use search_sim_only_tariffs), for phones without a contract, or for markets outside Germany. If the phone is not covered, the result lists the phones that are.

search_phone_contract_offers

Use this when the user wants a German mobile tariff without a phone (SIM-only, "Handyvertrag ohne Handy", "Handytarif"), for example an unlimited tariff, a tariff without minimum term, or at least 20 GB on the Vodafone network. Returns up to 5 verified tariffs ordered by total cost per month of the contract term, plus the tariff with the most data per euro among the matches. Also use for follow-up refinements of a SIM-only search, such as "nur im Telekom-Netz", "monatlich kuendbar" or "mindestens 50 GB". Repeat the search with unchanged user filters carried forward; replace or remove only criteria the user changes. A network request changes network, not provider. Returned offers include offer_id for get_offer_details when the user asks about one tariff's costs or conditions. Do not use it for phone bundles (use search_phone_contract_offers), prepaid top-up cards, landline or home internet, or travel eSIMs.

search_sim_only_tariffs

Use this when the user asks how the total cost of one offer from a previous search result is made up, or wants its full conditions: itemised cost breakdown, bonuses with and without condition, price after the minimum term, notice period, 5G, eSIM and other sellers of the same offer. Applies to both phone bundles and SIM-only tariffs, including follow-ups such as "Kostenaufstellung zum ersten Angebot", "welche einmaligen Kosten?" or "was kostet es danach?". Requires offer_id from the referenced search result; resolve "first" or "second" using the order actually shown to the user. If the ID is missing, repeat the matching search with the known criteria; ask for clarification if the offer cannot be identified unambiguously. For changed search filters use the matching search tool instead. Unknown or expired offers return nicht_gefunden; report this rather than inventing current terms. Do not guess an offer_id or use this tool for general mobile-network questions.

get_offer_details