Ebay Related Searches API
Ebay searches that may be related to other search terms are presented with related search section. They can be seen on the top of the search page.
SerpApi JSON structure overview:
{
...
"related_searches": [
{
"query": "String - Query of the related search",
"link": "String - Link to the Ebay search"
},
...
}
Related searches for "Coffee"

{
...
"related_searches": [
{
"query": "ground coffee",
"link": "https://www.ebay.com/sch/i.html?_nkw=ground+coffee&_sop=12"
},
{
"query": "coffee beans",
"link": "https://www.ebay.com/sch/i.html?_nkw=coffee+beans&_sop=12"
},
{
"query": "coffee pods",
"link": "https://www.ebay.com/sch/i.html?_nkw=coffee+pods&_sop=12"
},
{
"query": "coffee maker",
"link": "https://www.ebay.com/sch/i.html?_nkw=coffee+maker&_sop=12"
},
...
],
...
}