Operate every marketplace from one API.
One REST API for orders, channels, content changes, and performance reports across every connected marketplace.
What you can build
Order Management
Retrieve, update, and fulfil orders across all your connected marketplaces through a single, unified endpoint.
Inventory Sync
Keep stock levels accurate and in sync across Amazon, eBay, Shopify, and more — in real time.
Performance Analytics
Access sales analytics, profit reports, and marketplace metrics to power your own dashboards and tools.
Listing Management
Create, update, and optimise product listings across every marketplace channel programmatically.
How it works
Authenticate
Get your API key from Settings → API in MerchantSpring and pass it in the
x-api-key header on every request.Choose your endpoint
Browse the API Reference to find the endpoint you need — orders, inventory, listings, analytics, and more.
Make your first call
Follow the Quickstart guide to make your first live API request in under 5 minutes.
Need help?
Read the docs
Start with authentication then follow the quickstart guide.
Contact support
Can’t find what you need? Our team is happy to help.