The expansion object

An expansion is a set released together — Base Set, 151, Evolving Skies. It belongs to exactly one series, and every card belongs to exactly one expansion. Ids are upstream’s: base1, sv03.5, swsh7.

Counting cards

Two counts, and they disagree on purpose:

number | null

The printed set size — the number on the bottom of the card. Excludes secret rares.

number | null

Everything the expansion actually contains, secret rares included.

A card numbered 199/165 is not a mistake: 165 is official, 199 is inside total. 151, the set below, contains exactly that card — sv03.5-199, a Special illustration rare Charizard ex, sits inside a 207-card total against a 165-card official count.

Legality

legal_standard and legal_expanded say whether the expansion is tournament-legal in each format. null means unknown rather than illegal — it is what upstream sends when a set has no legality data at all, not a claim that the set is banned.

Example

{
  "data": {
    "id": "sv03.5",
    "series_id": "sv",
    "name": "151",
    "logo": {
      "low": "https://assets.cromos.so/expansions/sv03-5/logo/low.webp",
      "high": "https://assets.cromos.so/expansions/sv03-5/logo/high.webp"
    },
    "symbol": "https://assets.cromos.so/expansions/sv03-5/symbol/image.webp",
    "release_date": "2023-09-22",
    "card_count_total": 207,
    "card_count_official": 165,
    "legal_standard": false,
    "legal_expanded": true
  },
  "error": null
}

Getting started

Cards

Series

Expansions

Products

Scanning

Webhooks

The expansion object

Counting cards

Legality

Example

​Counting cards

​Legality

​Example

Counting cards

Legality

Example