The neo4j graph database query language, cypher, can add nodes one at a time using a command like: MERGE (n:NostrEvent {id:”abc123”}) But for a large number of nostr events, it’s much more performant to create a csv file, one row per event, and load them all at once with a command like: LOAD CSV FROM 'file:////neo4jExport.csv' AS row MERGE (n:NostrEvent {id: row[0]}) In addition to the event id property, other properties can be included, e.g.: pubkey: row[1], created_at: row[2], kind: row[3]