List orders (all document_type values)
Returns paginated orders. Filter by document_type to narrow to quotes, sales_orders, invoices, returns, or purchase_orders. expand[] supports up to depth 4 via the expand registry (customer, line_items, fulfillments, payments, invoice, tax_lines, refunds).
Authorizations
API key issued per entity via Settings > Developers > API Keys.
Each key carries scopes (e.g. orders:read, products:write).
Bearer token format: Authorization: Bearer ark_live_ent_Test keys use ark_test_ent_. Both are issued per entity
via Settings > Developers > API Keys.
Query Parameters
quote, sales_order, invoice, return, purchase_order 1 <= x <= 200x >= 0Hydrate related resources inline. List endpoints REQUIRE the data. prefix
(e.g. expand[]=data.customer). Valid paths: see x-arcus-expand below.
data.customer, data.account, data.line_items, data.line_items.product, data.payments, data.refunds, data.packages, data.fulfillments, data.gl_entries, data.invoice, data.tax_lines 
