Programmatic access to the CollectorsStashMarket marketplace — create, update and search listings, integrate POS sales flow, sync inventory.
GET /v1/listings?card_id=12345&condition=NM&limit=20POST /v1/listings
Content-Type: application/json
{
"card_id": 12345,
"variant": "foil",
"condition": "NM",
"price_eur": 19.50,
"quantity": 1,
"photos": ["url1", "url2"]
}