Nintendo API
Nintendo (nintendo.com) has 2 public methods: list eShop deals and get a Nintendo Switch game's store details. Each costs 1 credit per completed run (1¢ with pay as you go); failed runs are free.
Unofficial. Not affiliated with or endorsed by Nintendo.
Methods
2Lists discounted Nintendo Switch and Switch 2 games, sorted by biggest discount, lowest price or ending soonest. Covers the US, Canada and Latin American stores and excludes downloadable add-ons.
Returns title, platform, original and sale price, currency, discount percent, sale end date, link
Readnintendo.com/list_dealsLooks up a Nintendo Switch or Switch 2 game by name or Nintendo link and returns its eShop price, sale, release date, publisher, rating, players, size and genres for the chosen country (US, Canada, UK, Mexico, Brazil, Argentina, Chile, Colombia or Peru).
Returns name, platform, regular and sale price, currency, discount, sale end, release date, publisher, age rating, players, download size, genres, demo, cover image, link, product code
Readnintendo.com/get_game