Stream 2 — Inventory level - Droplinked Developers

BETA. The inventory-level stream projects current stock per SKU from ProductSkuV2 (joined to the merchant’s products).

The inventory-level stream is the per-SKU stock record: quantity and available, plus the warehouse external id when the SKU is synced from a 3PL. Rows are scoped to the products owned by the API key’s merchant.

Endpoint

GET /v1/api/inventory-os/streams/inventory-level

Query parameters:

Param	Type	Notes
`limit`	int	1–200, default 50
`cursor`	string	Opaque pagination token
`since`	ISO-8601	Optional; SKUs updated on or after this timestamp

Row shape

{
  "skuId": "665fsku123…",
  "productId": "665f8abc123…",
  "type": "DIGITAL",
  "inventoryQuantity": 150,
  "inventoryAvailable": 142,
  "warehouseExternalId": "stord-warehouse-atl-1",
  "updatedAt": "2026-06-01T12:00:00.000Z"
}

Field	Meaning
`skuId`	`ProductSkuV2` id
`productId`	Parent product (join key to the catalog stream)
`inventoryQuantity`	Total stock (`inventory.quantity`)
`inventoryAvailable`	Sellable stock (`inventory.available`)
`warehouseExternalId`	3PL/warehouse external id when synced from a fulfillment partner; `null` otherwise

Response envelope

{
  "streamType": "inventory-level",
  "merchantId": "65df8abc123…",
  "data": [ /* rows */ ],
  "count": 50,
  "nextCursor": "NjY1ZnNrdTEyMw..."
}

curl

curl "https://apiv3.droplinked.com/v1/api/inventory-os/streams/inventory-level?limit=100" \
  -H "x-droplinked-api-key: REPLACE_ME"

Lender-facing usage

The lending underwriter uses this stream as a collateral-valuation input. Combined with the provenance stream (8) and PSP-confirmed settlement stream (7), 3PL-attested custody gets the underwriter materially off the lending rate. Subscribe to webhooks (vs polling) for active lender integrations.

Rate limits

Mid-budget class — 500 reads/min/key, up to 5 subscriptions/key.

Catalog stream — product definitions referenced here via productId
Sell-through stream — sale events per merchant
Provenance stream — onchain recording per product
Webhook subscriptions — inventory.changed events

Get Started

InventoryOS API

Lending Application API

KYB & Cohorts

Stream 2 — Inventory level

Endpoint

Row shape

Response envelope

curl

Lender-facing usage

Rate limits

​Endpoint

​Row shape

​Response envelope

​curl

​Lender-facing usage

​Rate limits

​Related

Endpoint

Row shape

Response envelope

curl

Lender-facing usage

Rate limits

Related