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The ListSets verb will return a list of all harvestable OAI sets defined as LibraryCloud Collections. At this time, the LibraryCloud ListSets verb does not support a resumptionToken, so the response will always include the first 10 collections only. 

https://api.lib.harvard.edu/oai/?verb=ListSets

ListRecords

ListRecords requests that the OAI data provider to return full metadata records for a given LibraryCloud Collectioncollection. Results can be returned as MODS or DC.

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ListIdentifiers

ListIdentifiers requests that the OAI data provider to return the identifiers of records for in a given LibraryCloud Collectioncollection.

https://api.lib.harvard.edu/oai/?verb=ListIdentifiers&metadataPrefix=mods&set=CNAREVIEWscores (no matching records)

Identify

This verb is used to retrieve information about a Harvard's LibraryCloud repository. 

https://api.lib.harvard.edu/oai/?verb=Identify (works)

GetRecord

This verb is used Use GetRecord to retrieve an individual metadata record from a the LibraryCloud repository. Required arguments specify the identifier of the item from which the record is to be requested and the format of the metadata that should be included in the record.

https://api.lib.harvard.edu/oai/?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:vc.harvard.edu:scarlet.000796856 (doesn't work)using Aleph ID) 
https://api.lib.harvard.edu/oai/?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:vc.harvard.edu:scarlet.990007968560203941 (alma vers doesn't work eitherusing Alma ID) 

ListMetadataFormats

Use ListMetadataFormats

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xxx

This verb is used to retrieve the metadata formats available from a the LibraryCloud repository. An optional argument restricts the request to the formats available for a specific item.

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https://api.lib.harvard.edu/oai/?verb=ListMetadataFormats&identifier=oai:vc.harvard.edu:scarlet.990007968560203941 (why doesn't this work?)