Every AI tool wants your data in their cloud. For most data that's fine. For the data that actually matters, your customer lists, financial models, pipelines, the spreadsheets you live in, it's not. Nexus flips the model. Instead of handing your data to a cloud SaaS and hoping they don't train on it or retain it, the agent comes to your data. Point Nexus at a sheet and it stays right where it is. Iris reads any tabular source and exposes a semantically meaningful interface to your AI tooling, so tool names match what your data actually is: find_stale_customers(), top_opportunities(), low_co