Grand Archive TCG

Grand Archive TCG is a trading card game by Weebs of the Shore LLC that launched in April 2023. Cards come in Standard and Foil finishes across 54 expansions with ~4,800 products.

Grand Archive uses an API-first importer — card data comes from the official GA API at api.gatcg.com, with TCGPlayer product IDs matched via TCGCSV (category 74) for pricing. ~84-88% price coverage across the catalog.

Useful Resources

Resource	URL	Notes
Grand Archive API	api.gatcg.com	Primary data source. No auth. OpenAPI v1.1.0.
TCGCSV	Category 74	TCGPlayer product IDs and pricing
Grand Archive Index	index.gatcg.com	Official card database
CDN Assets	cdn2.gatcg.com	Attribute icons (elements, types, classes, costs)

Documentation

Technical Overview Architecture Decision Records

Code Locations

Component	Location
Importer	`packages/games/game-importer/src/grand-archive/grand-archive-importer.ts`
API client	`packages/games/game-importer/src/grand-archive/grand-archive-api-client.ts`
TCGPlayer matching	`packages/games/game-importer/src/grand-archive/grand-archive-tcgplayer.service.ts`
Expansion → groupId map	`packages/games/game-importer/src/grand-archive/grand-archive-tcgplayer.utils.ts`
Game config & types	`packages/games/game-configuration/src/lib/games/grand-archive/`
DTO schemas	`packages/core/api-dtos/src/lib/product/games/grand-archive.schema.ts`