Does Multi Warehouse Inventory extension support Magento SOAP API and REST API?

The available methods to add and get stock data are:

POST /V1/amastymultisetstoc
Add stock by ID

POST /V1/amastymultisetstocksku
Add stock by SKU

GET /V1/amastymultigetstocks/{id}/
Get stocks for product by ID

GET /V1/amastymultigetstockssku/{sku}/
Get stocks for product by SKU

GET /V1/amastymultigetproducts/{code}/
Get products for warehouse

See the details of how they work in our user guide.