What chain is Rook on?

Rook operates on the Ethereum chain with plans to expand to others. Solvers operate wherever MEV can be found.

How does the Instant Fill Order work?

This is related to our protocol upgrade. Currently KD uses 0xv4 RFQ which led to a UI issue with instant fills. I designed a new protocol that is more gas efficient and perfectly suited for this, still in development. -JZ

Are there plans to release or license Ninja?

No. There are currently no plans to provide “bots-as-a-service”.