Thank you for the helpful response.
I'm just looking for a lists of gene, drugs, evidence_direction, and clinical_significance combinations for each association, so I think the nightly summaries should be enough -- but I'll keep the API in mind. It looks like I would need to loop through the variants using the https://civic.genome.wustl.edu/api/variants/497 call in order to obtain most of the information I'm interested in.