sheetspec is an open-source Python library that provides contract-based validation for spreadsheets, particularly those generated by AI agents. It helps developers ensure data quality and correctness in Excel and xlsx files by defining and enforcing validation contracts. Ideal for developers integrating AI with spreadsheet workflows.
sheetspec sits in PulseGate's AI & ML category. It focuses on ensuring the quality and correctness of spreadsheets generated by AI agents through contract-based validation. sheetspec is an open-source project aimed at developers working with AI-generated spreadsheets. The project is open source (MIT). The product ships for the command line, and it can be self-hosted.
sheetspec first shipped in 2026. The project is developed in the open on GitHub with 7 commits in the last 90 days. Among its 5 catalogued features are spreadsheet validation, contract testing, and excel support.
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