亚马逊MWS API - 单一产品更新

I want to update a single Amazon product's price or qty with an api call.

I know i can send a feed of one or multiple products, but is the another api call to send a single product and get an immediate response?

I also want an api call to GET my qty for sale on a single product. GetMyPriceForSKU does not have qty.

anyone know which amaozn mws api & call to look in for this. I already looked through the mws dev pages and did not find anything.

Sending products to Amazon must go through feeds. Use the Feeds API. You'll need to create a feed of one or more products, submit the feed, and then query as to the status of the feed. In my experience it takes a matter of a few minutes but I have seen a few thousand products take several hours.

To view your inventory, you'll need to use the Reports API to request one of the listings reports

Also, check out the scratchpad. That's a great tool for trying out an operation with minimal resources.