Witan Labs

Witan Labs builds tools that let AI agents read, edit and check spreadsheets and documents. Witan Spreadsheets is an API-backed Excel workbook engine: coding agents can change cells, recalculate formulas, trace dependencies and render ranges for visual inspection before saving. Its compatibility target is ordinary Excel workbooks, within documented feature limits. The toolset also includes document text extraction and Google Sheets integration through its CLI and Python and JavaScript SDKs, with explicit authorization for individual sheets.

Led by CEO Joao Menano, Witan developed its spreadsheet tooling through research on financial analysis agents. Its engineering work shifted from separate tool calls toward a programmable environment where agents compose operations in scripts, later exposed as witan xlsx exec. Formula-analysis experiments informed dependency tracing and semantic linting, while deterministic checks compare cell values, layout and formatting to evaluate results.

Witan offers free personal cloud access and custom enterprise pricing. Personal requests send files separately without a server-side file cache; authenticated enterprise workflows can reuse uploaded workbook revisions. Enterprise customers can select regions or self-host the API, with minimum committed usage required for each self-hosted product. This pairs a local command-line interface with cloud or self-hosted execution, while spreadsheet scripts run in a sandbox without filesystem or network access.