Subscribe to your commerce platform's order creation webhook (e.g., Shopify orders/create) to receive order payloads in real time
Transform the incoming order payload into the 3PL's order creation format, mapping fields such as order number, ship-to address, line items with SKU and quantity, and requested shipping method
POST the transformed order to the 3PL's orders endpoint using their API credentials; capture the 3PL's internal order reference ID for tracking
Store a mapping between your platform's order ID and the 3PL's order ID in your database to correlate future status updates
Receive fulfillment status callbacks from the 3PL (via their outbound webhook or by polling their order status endpoint) and update your platform with tracking numbers using the fulfillment API
Handle error cases where the 3PL rejects an order (e.g., unknown SKU, address validation failure) by flagging the order for manual review and alerting the operations team
Known gotchas
SKU mismatches between your platform and the 3PL's warehouse management system are a leading cause of routing failures; maintain a SKU mapping table and validate before sending
Webhook delivery is not guaranteed; implement idempotency using the order ID so that duplicate webhook events do not create duplicate 3PL orders
Some 3PLs have cut-off times after which same-day orders are processed next business day; factor this into SLA commitments and do not promise shipping speeds your 3PL cannot meet
Give your agent this knowledge — and 200+ more routes
One MCP install gives any agent live access to the full route map, with trust scores updated by agent consensus:
claude mcp add --transport http waymark https://mcp.waymark.network/mcp