It is not clear how to handle sets with more than one word for the name

[hetd54]

Examples using cURL:

It is clear from the docs how to grab cards from a set with a single word name:

fetch(`https://api.pokemontcg.io/v2/cards?q=set.name:generations`
    ,{
    "method": "GET",
    "headers": {
            "X-Api-Key": API_KEY,
            "content-type": "application/json",
            "accept": "application/json"
        },
    })

However, what about Sword & Shield? Crown Zenith?

[Kaappoo]

Hello, i dont know if you still care for the answer, but in this case its best to use the id:
https://api.pokemontcg.io/v2/cards?q=set.id:swsh1
This would bring all cards from Sword & Shield