The following are fields are currently available through the Discovery API. Field names refer to column A in https://docs.google.com/spreadsheets/d/1qTjXqCO4eusaxr6MGpb7ns4u6k8hmg0s6LzJWvHhmHI/edit#gid=0 . See column C (JSON-LD key) for the field name you should expect the API to expose. Field definition (col D) and Range (col F) may also be helpful.

Top-level (i.e. Bib)

Type
Alternative title
Contributor literal
Contributor literal by role
Creator literal
Date
Date created
Date end
- ✅ facetable
Date start
- ✅ facetable
Description
Dimensions
Supplementary content
Extent
Identifier
Issuance
- ✅ facetable
Label
Language
- ✅ facetable
Note
Number of items
OCLC number
Place of publication
Publisher literal
- ✅ facetable
Resource type
Subject literal
- ✅ facetable
Suppressed
Title
Title display
HathiTrust version
HathiTrust volumes
HathiTrust access

Item-level

Access message
Availability
Barcode
Call number
Carrier type
- ✅ facetable
Catalog item type
Content owner
- ✅ facetable
Delivery location
- ✅ facetable
Electronic location
Holding location
- ✅ facetable
Identifier
Media type
- ✅ facetable
Requestable
- ✅ facetable (planned)