
Multi languages Pokémon TCG Information.
TCGdex API is a free Games & Comics API that requires no API key, is served over HTTPS and supports CORS, so it can be called from the browser.
TCGdex is a 14 languages API for the Pokémon TCG, having detailed data on cards, sets and others, and an easy access with a REST/GraphQL APIs and multiple SDKs.
Details from tcgdex.dev.

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The TCGdex API is provided by TCGdex API (tcgdex.dev). TCGdex is a 14 languages API for the Pokémon TCG, having detailed data on cards, sets and others, and an easy access with a REST/GraphQL APIs and multiple SDKs.
Yes. The TCGdex API is listed in the Games & Comics category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
No. The TCGdex API requires no authentication, so you can start making requests without signing up.
Yes. The TCGdex API supports CORS, so front-end JavaScript can call it directly.
Yes. The TCGdex API is served over HTTPS, so it's safe to use in production.