License: AGPLv3 server / MIT JS client
Stack: Rails + PostgreSQL + Redis + Sidekiq + Kafka Verdict: Not recommended for embedding. Heavy stack (6+ containers). Appropriate only if the platform evolves to event-based metering (per-cheque usage billing) and is deployed as a separate service stack. JS client (
lago-javascript-client) is MIT, Deno-compatible via npm:lago-javascript-client.