Sat-api is a STAC compliant web API for searching and serving satellite imagery metadata. Development Seed runs an instance of it for Landsat and Sentinel imagery hosted on AWS. You can access this instance at https://sat-api.developmentseed.org.
This repo includes a number of npm packages that are used to create and populate an instance of sat-api. For the full list of packages go to: https://www.npmjs.com/org/sat-utils