Standardized OpenAPIs deeply integrate your order, inventory, and product data, aligning your business systems with our Japan warehouses for efficient collaboration.
Technical integration for diverse business models — flexible, secure system connectivity.
ERP / WMS Software Vendors
Tenant-level physical data isolation. One standard integration empowers every client you serve and sharpens your core product edge.
Leading E-Commerce Tech Teams
Automate platform orders into fulfillment requests, with live shipment status and tracking trajectories returned to your ERP — closing the fulfillment loop.
DTC Store Developers
Every order fires an outbound instruction automatically — no manual imports — giving end consumers fully transparent, end-to-end tracking.
Cross-Border Agency Tech Services
A single global inventory view across stores with high-speed paged full syncs — accurate stock across every sales channel.
Deeply modeled on real warehouse operations — comprehensive, stable core business APIs.
Order Fulfillment
Bulk outbound instructions with pre-check inventory validation and reservation. Live order-flow status; carrier details, shipping methods, and tracking numbers synced automatically after dispatch.
Inventory Sync
Available, reserved, and in-transit views. Precise SKU lookups plus high-volume paged full syncs keep every system and the physical stock in agreement.
Product Management
Product master create, update, and SKU lookup, plus multi-level category-tree sync — your local system and our warehouse stay strictly aligned.
Master Data
Dynamically fetch active Japan warehouses and per-warehouse shipping options (AUTO smart routing by default) — system setup made simple.
A standardized path from credentials to production — integrate in as little as 24 hours.
curl -X POST "https://{Base-URL}/openapi/inventory/query" \
-H "App-Key: T123456_merchant_a" \
-H "Timestamp: 1718000000" \
-H "Nonce: 9f2c4a7e1b5d" \
-H "Sign: 7F3A9C2E4B1D8F06A5C3E7B9D0F2A4C6E" \
-d '{"skuList":["SKU-001","SKU-002"]}'
{
"code": 0,
"message": "success",
"data": { "sku": "SKU-001", "available": 120 }
}
Bank-Grade Security
HMAC-SHA256 signatures with timestamp expiry checks and anti-replay nonces — a three-layer barrier against forged requests and interception.
Standardized Responses and Diagnostics
Uniform JSON exchange with clearly tiered auth- and business-layer error codes — developers isolate and clear faults in minutes.
High-Concurrency Batching
Up to 200 documents or SKUs per batch call, with fast full-inventory paging — comfortably absorbing mega-sale data volumes.
Strict Data Isolation
Core order and inventory data is strictly bound to the authorized AppKey; the multi-tenant architecture physically isolates every merchant data set.
Register free for the OSL cloud system, then contact sales or support — credentials and your dedicated Base URL are issued together.
Online Debugging Sandbox
A browser-based visual testing rig with zero setup — point and call.
Open Console