What Are SaaS APIs?
SaaS APIs are application programming interfaces that allow cloud-based software products to communicate with other systems. For example, eCommerce apps can use APIs to access store data such as products, orders, customers, shipments, categories, and stock fields where supported. Instead of relying on manual imports or separate custom connectors, SaaS API integration helps software products exchange data through API requests. As a result, software vendors can build features for order management, inventory tools, shipping workflows, marketing automation, reporting, and marketplace management. The video below explains how APIs work and why they are important for software products that depend on external data.Top 11 SaaS APIs for eCommerce Software
The best SaaS APIs help software vendors connect their products with external systems and access the data needed for core features. For example, eCommerce software may need product data, order data, customer data, shipment details, stock fields, payment information, or marketplace data. Below are top SaaS APIs that can support eCommerce software, marketplace tools, order management systems, inventory platforms, shipping software, PIM solutions, and marketing automation products.1. BigCommerce API
BigCommerce provides APIs for working with store data, products, orders, customers, and storefront-related information. As a result, software vendors can use BigCommerce API methods to support product management, order processing, catalog updates, and reporting tasks. The BigCommerce developer documentation explains how its REST APIs work with JSON-based requests and platform-specific resources.2. WooCommerce API
WooCommerce API allows software products to work with WordPress-based online stores. For example, developers can use it to access products, orders, customers, coupons, and stock-related fields where supported. In addition, WooCommerce integration can support inventory tools, order management software, shipping systems, and reporting platforms. You can also read our guide on WooCommerce API basics for more details.3. Shopify API
Shopify API helps developers build integrations with Shopify stores. It can support access to products, orders, customers, shipments, inventory-related fields, and other store data where supported. However, Shopify API usage changes over time. Therefore, software vendors should monitor Shopify API versions, authentication requirements, supported resources, and app requirements when planning Shopify integration.4. Ecwid API
Ecwid API can help software products connect with Ecwid stores and access store data. For example, it can support product, order, customer, and storefront-related tasks depending on the integration use case. The Ecwid API documentation describes available endpoints, authentication, and supported store resources.5. Lightspeed API
Lightspeed API gives software vendors access to commerce data from Lightspeed systems. As a result, it can support product, inventory, order, customer, and retail-related software workflows. In addition, Lightspeed can be relevant for software products that work with merchants using both online and offline sales tools.6. Magento API
Magento API supports integrations with Magento and Adobe Commerce stores. Software vendors can use it to work with products, customers, orders, categories, shipments, and other commerce data. Magento supports several API options, including REST and GraphQL. Therefore, development teams should choose the API approach based on the data they need and the Magento version they support.7. Salesforce Commerce Cloud API
Salesforce Commerce Cloud API helps developers build integrations with Salesforce B2C Commerce. It can support store data access, catalog tasks, order-related workflows, and customer-facing commerce features. For SaaS API integration, Salesforce Commerce Cloud can be relevant for enterprise-focused software products that serve larger commerce teams.8. Shift4Shop API
Shift4Shop API allows software products to work with store data from Shift4Shop stores. For example, it can support product, order, customer, and catalog-related tasks. However, available requests, rate limits, and supported resources can depend on the platform rules and API documentation.9. Squarespace Commerce API
Squarespace Commerce API can help software providers access commerce data from Squarespace stores. This can include inventory, orders, products, and customer-related data where supported. In addition, Squarespace Commerce API can be useful for tools that support merchants using website and store functionality in one platform.10. X-Cart API
X-Cart API supports data exchange with X-Cart stores through API requests. Software vendors can use it for product, order, customer, and store-related tasks depending on available methods. As a result, X-Cart can be relevant for software products that need to support open-source shopping cart environments.11. API2Cart API
API2Cart works as a SaaS API for eCommerce software providers that need store data from many supported platforms. It helps software connect with Shopify, Magento, WooCommerce, BigCommerce, OpenCart, PrestaShop, Wix, Amazon, eBay, Etsy, and other supported eCommerce platforms and marketplaces through one API layer. With API2Cart, software providers can work with products, orders, customers, categories, shipments, and stock fields where supported. Therefore, API2Cart can support inventory management systems, order management platforms, shipping software, PIM solutions, marketplace management tools, product feed software, and marketing automation platforms. API2Cart can be useful when your team does not want to build and maintain separate integrations for every supported shopping platform. Instead, your software can use API2Cart methods to access store data from connected platforms through one API layer.SaaS API Example for eCommerce Software
SaaS APIs are useful when software products need to access data from external systems. For example, an eCommerce SaaS product may need product data from a connected store to support inventory tools, PIM features, product feeds, analytics, or marketplace management. After a merchant store is connected to API2Cart, your software can use theproduct.list method to retrieve product data from a supported eCommerce platform or marketplace.
{
"return_code": 0,
"return_message": "string",
"pagination": {
"previous": "string",
"next": "string",
"additional_fields": {},
"custom_fields": {}
},
"result": {
"products_count": 0,
"product": [
{
"id": "string",
"type": "string",
"u_model": "string",
"u_sku": "string",
"name": "string",
"description": "string",
"short_description": "string",
"price": 0,
"advanced_price": [
{
"id": "string",
"value": 0,
"avail": true,
"group_id": "string",
"quantity_from": 0,
"start_time": {
"value": "string",
"format": "string",
"additional_fields": {},
"custom_fields": {}
},
"expire_time": {
"value": "string",
"format": "string",
"additional_fields": {},
"custom_fields": {}
},
"additional_fields": {},
"custom_fields": {}
}
],
"cost_price": 0,
"unit_price": 0,
"measure_unit": "string",
"quantity": 0,
"inventory": [
{
"warehouse_id": "string",
"quantity": 0,
"in_stock": true,
"priority": 0,
"additional_fields": {},
"custom_fields": {}
}
],
"group_items": [
{
"child_item_id": "string",
"product_id": "string",
"default_qty_in_pack": 0,
"is_qty_in_pack_fixed": true,
"price": 0,
"additional_fields": {},
"custom_fields": {}
}
],
"u_brand_id": "string",
"u_brand": "string",
"categories_ids": [
"string"
],
"stores_ids": [
"string"
],
"url": "string",
"seo_url": "string",
"meta_title": "string",
"meta_keywords": "string",
"meta_description": "string",
"avail_sale": true,
"avail_view": true,
"is_virtual": true,
"is_downloadable": true,
"weight": 0,
"weight_unit": "string",
"sort_order": 0,
"in_stock": true,
"backorders": "string",
"manage_stock": "string",
"is_stock_managed": true,
"on_sale": true,
"create_at": {
"value": "string",
"format": "string",
"additional_fields": {},
"custom_fields": {}
},
"modified_at": {
"value": "string",
"format": "string",
"additional_fields": {},
"custom_fields": {}
},
"tax_class_id": "string",
"special_price": {
"value": 0,
"avail": true,
"created_at": {
"value": "string",
"format": "string",
"additional_fields": {},
"custom_fields": {}
},
"modified_at": {
"value": "string",
"format": "string",
"additional_fields": {},
"custom_fields": {}
},
"expired_at": {
"value": "string",
"format": "string",
"additional_fields": {},
"custom_fields": {}
},
"additional_fields": {},
"custom_fields": {}
},
"tier_price": [
{
"qty": 0,
"price": 0,
"additional_fields": {},
"custom_fields": {}
}
],
"group_price": [
{
"id": "string",
"group_id": "string",
"price": 0,
"store_id": "string",
"quantity": 0,
"start_time": "string",
"expire_time": "string",
"additional_fields": {},
"custom_fields": {}
}
],
"images": [
{
"id": "string",
"http_path": "string",
"file_name": "string",
"mime-type": "string",
"size": 0,
"create_at": {
"value": "string",
"format": "string",
"additional_fields": {},
"custom_fields": {}
},
"modified_at": {
"value": "string",
"format": "string",
"additional_fields": {},
"custom_fields": {}
},
"alt": "string",
"avail": true,
"sort_order": 0,
"type": "string",
"additional_fields": {},
"custom_fields": {}
}
],
"product_options": [
{
"id": "string",
"product_option_id": "string",
"name": "string",
"description": "string",
"sort_order": 0,
"type": "string",
"required": true,
"available": true,
"used_in_combination": true,
"option_items": [
{
"id": "string",
"product_option_item_id": "string",
"name": "string",
"sort_order": 0,
"price": 0,
"weight": 0,
"quantity": 0,
"type_price": "string",
"sku": "string",
"is_default": true,
"additional_fields": {},
"custom_fields": {}
}
],
"additional_fields": {},
"custom_fields": {}
}
],
"u_upc": "string",
"u_mpn": "string",
"u_gtin": "string",
"u_isbn": "string",
"u_ean": "string",
"related_products_ids": [
"string"
],
"up_sell_products_ids": [
"string"
],
"cross_sell_products_ids": [
"string"
],
"dimensions_unit": "string",
"width": 0,
"height": 0,
"length": 0,
"discounts": [
{
"id": "string",
"name": "string",
"modifier_type": "string",
"value": 0,
"from_time": "string",
"to_time": "string",
"customer_group_ids": "string",
"sort_order": 0,
"additional_fields": {},
"custom_fields": {}
}
],
"additional_fields": {},
"custom_fields": {}
}
],
"additional_fields": {},
"custom_fields": {}
},
"additional_fields": {},
"custom_fields": {}
}
How to Choose SaaS APIs for Your Software Product
When choosing SaaS APIs, software vendors should look at supported data entities, API documentation, authentication, rate limits, platform coverage, update policies, and long-term maintenance needs. Also, your choice depends on your product type. For example, shipping software needs order and shipment data, while PIM tools need product data, categories, images, and stock-related fields. As a result, the right SaaS API should match your core software workflows. Start your free trial and test API2Cart for eCommerce SaaS API integration.FAQs
What are SaaS APIs?
SaaS APIs are application programming interfaces that help cloud-based software products communicate with other systems. For example, eCommerce software can use APIs to access products, orders, customers, shipments, categories, and stock fields from connected platforms where supported.
Why are SaaS APIs important for software vendors?
SaaS APIs are important because they help software vendors extend product functionality without relying on manual data imports. As a result, software products can support order management, inventory, shipping, analytics, marketplace, and reporting workflows.
Which SaaS API is useful for eCommerce software?
API2Cart is useful for eCommerce software because it helps connect with supported eCommerce platforms and marketplaces through one API layer. In addition, software vendors can use it to access store data from Shopify, WooCommerce, Magento, BigCommerce, and other supported platforms.
How can SaaS API integration help with shopping platforms?
SaaS API integration can help software products connect with shopping platforms and access store data for product, order, customer, shipment, and reporting tasks. For a regional integration example, you can read our guide on European shopping platforms and how software vendors can approach platform support in that market.
