Functions could be added that allow users to create/update/remove sitelinks. See the API docs for details.

In order to get the reference.py file to work with my claim reference, I changed the snak dictionary on line 82 from:

` snak = {property_id: [{"snaktype": snak_type, "property": property_id, "datavalue": value}]}

to

snak = {property_id: [{"snaktype": snak_type, "property": property_id,"datavalue":{"type":"string","value": value}}]}

It seems that it is not possible to create a new property...
I tried:

wb.entity.add(entity_type="property")

But got this error:

ApiError: {"code": "param-illegal", "info": "A datatype was expected, but either missing or not recognized.", "messages": [{"name": "wikibase-api-not-recognized-datatype", "parameters": [], "html": {"": "A datatype was expected, but either missing or not recognized."}}], "": "See http://localhost:8466/w/api.php for API usage. Subscribe to the mediawiki-api-announce mailing list at <https://lists.wikimedia.org/mailman/listinfo/mediawiki-api-announce> for notice of API deprecations and breaking changes."}

It seems not yet implemented although it is used as example in the documentation. This code below should fix it

    def get(self, entity_id, property_id=None, rank=None):
        """Get claims for the specified entity

        :param entity_id: Entity identifier (e.g. ``"Q1"``)
        :type entity_id: str
        :param property_id: Property identifier (e.g. ``"P1"``)
        :type property_id: str
        :param rank: Optional filter to return only the claims that have the specified rank
            (one of ``["deprecated", "normal", "preferred"]``)
        :type rank: str
        :return: Response
        :rtype: dict
        """
        params = {
            "action": "wbgetclaims",
            "entity": entity_id,
        }
        if property_id is not None: params['property'] = property_id
        if rank is not None: params['rank'] = rank
        return self.api.get(params)