Production Endpoints to Retrieve Keyword Suggestions

Search Engine	Production Endpoint
Google	https://api.keywordtool.io/v2/search/suggestions/google
YouTube	https://api.keywordtool.io/v2/search/suggestions/youtube
Bing	https://api.keywordtool.io/v2/search/suggestions/bing
Amazon	https://api.keywordtool.io/v2/search/suggestions/amazon
eBay	https://api.keywordtool.io/v2/search/suggestions/ebay
Instagram	https://api.keywordtool.io/v2/search/suggestions/instagram

Test Endpoints to Retrieve Keyword Suggestions

Search Engine	Test Endpoint
Google	https://api.keywordtool.io/v2-sandbox/search/suggestions/google
YouTube	https://api.keywordtool.io/v2-sandbox/search/suggestions/youtube
Bing	https://api.keywordtool.io/v2-sandbox/search/suggestions/bing
Amazon	https://api.keywordtool.io/v2-sandbox/search/suggestions/amazon
eBay	https://api.keywordtool.io/v2-sandbox/search/suggestions/ebay
Instagram	https://api.keywordtool.io/v2-sandbox/search/suggestions/instagram

You can find the detailed API Reference and the list of supported parameters for the Keyword Suggestions endpoint on this page: https://docs.keywordtool.io/v2/reference