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A marketplace is a single Amazon site. Archer identifies each marketplace by its domain. Unsupported marketplace values return 400.

Filtering by marketplace

Catalog, link, and reporting endpoints accept marketplace.
Pass marketplace=all to span every marketplace in a single response:
Rows still include their own marketplace field.

Defaults

For backward compatibility with pre-v2 clients, when marketplace is omitted from catalog and link-listing endpoints it defaults to amazon.com. Pass a specific marketplace or all when you need non-US data.

Currency

Reports return sale amounts in the marketplace’s native currency. Each report row includes currency; Archer does not convert FX.