This provider makes it possible to access a collection of json documents in MongoDB as either GeoJSON or an Esri FeatureService. This is particular useful for making maps and doing analysis on the web.
To install/use this provider you first need a working installation of Koop. Then from within the koop directory you'll need to run the following:
npm install https://github.com/chelm/koop-mongo/tarball/master
In order for the provider to connect to a mongo db instance you'll need to pass in the MongoDB connection string. This is done by adding the connection string to Koop's application configuration JSON.