Nexus

Drop any spreadsheet.

Nexus is a local-first agent layer for tabular data. Point it at a sheet (CSV, XLSX, SQLite, DuckDB, FileMaker) and Iris, the agent inside Nexus, reads it, understands it, and spins up a local MCP server exposing semantic tools your AI agent can call. No cloud uploads, no re-uploading every time the data changes. Your master stays read-only; every change is a non-destructive derivation on top. Works with Claude Code, Cursor, or any MCP client.