UUID generator API, UUID generator, UUIDv4 generator, UUIDv7 generator, random UUID generator, unique ID generator, batch UUID generator, GUID generator, RFC 4122 UUID generator, online UUID generator, database UUID generator. Generate cryptographically random UUID v4 or time-sortable UUID v7, single or batch up to 100. For AI agents, distributed systems, database row IDs, request tracking, correlation IDs, idempotency keys.