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Hi Koog team!

I'm Jacek from Staffbase. We build an AI Assistant for our employee communications platform, and we chose Koog as the foundation for it. It's used by big whales like Intel, DHL, Medicover, 7-Eleven and Alaska Airlines, and we're aiming for 1 million users by the end of the year. Right now we're working on MCP and A2A integrations.

Two things I'd like to raise:

1. We recently had a serious incident that took the Assistant down on all environments. OpenAI models we use don't always send deltas in streaming responses, which crashed Koog because of non-null fields in it's DTOs. We've shipped a workaround on our side and opened a <https://github.com/JetBrains/koog/pull/2257|PR with a fix>. Would you be able to review and merge it soon? It would let us drop the workaround.

2. <https://github.com/JetBrains/koog/issues/2088|A2A protocol 1.0> support alongside 0.3 is currently a blocker for us. I assume that's a bigger piece of work. There's an open ticket for it ;is there anything we could contribute to help it push forward?

Thanks a lot for the great work on Koog. Greetings from our team in Poland and Germany!

Jacek