"You may not provide the software to third parties as a hosted or managed service" - The Elastic v2 license isn't actually open source like your title mentions: "Open-source JS agent framework"

https://github.com/mastra-ai/mastra/blob/main/LICENSE

I mentioned that in the comment. We’re using Elastic v2 for now because we want users to be able to do anything with us, but protect from eg AWS