base {url, auth, default-language}

Objects:
    Item {id, rev; labels, descriptions, aliases, site_links, statements}
    Property {id, rev; datatype, labels, descriptions, aliases, site_links, statements}
    Statement {property, value, qualifiers, references, rank}

Constants:
    languages
    sites (for links)
    datatypes
    ranks {preferred, normal, deprecated}

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will wikibase servers have non-wikimediafoundation language codes and/or
"sites"?

====================================

Entities:
    wbsearchentities
    wbgetentities
    wbeditentity
    wbmergeitems
    wbsetaliases
    wbsetdescription
    wbsetsitelink: for linking articles/entities

Claim Editing:
    wbsetclaim
    wbgetclaims
    wbcreateclaim
    wbremoveclaims
    wbsetclaimvalue
    wbsetqualifier
    wbremovequalifiers
    wbsetreference
    wbremovereferences

Other:
    wbcreateredirect

Unimplemented:
    wbsetlabel: for linking articles/entities
    wbsgetsuggestions: gets "related" property recommendations
    wblinktitles: for linking pages across multiple wikis
    wbavailablebadges: eg, "good article"
    wbformatvalue: eg, for JS UIs
    wbparsevalue: eg, for JS UIs