storytold/gridcraft is a project that implements an open-source, Microsoft Excel-style spreadsheet in Rust. Its latest release is v0.7.0, but the provided material does not spell out what changed in this version. The repository description introduces it as a clean-room reimplementation. It is released under the Apache-2.0 license, and the repository was created on October 7, 2026.
The project runs on macOS, Windows, Linux and BSD as well as in the browser (WebAssembly). According to the README, agents can operate the ribbon's buttons and menus as commands through an MCP server, a JSON control channel and a command line. The default file format is XLSX, and it saves and reloads styles, themes, formulas, tables, conditional formatting, charts and pivot tables. Legacy XLS, XLSB and ODS files can also be imported. The calculation engine is said to support more than 500 worksheet functions plus LET, LAMBDA, MAP and REDUCE.
In ArtCraft's tool set, it is the spreadsheet axis following the document editor wordcraft, the drawing tool cadcraft and the vector tool vectorcraft. However, agent manipulation and compatible features are what the README states, and the provided material contains no performance figures or separate compatibility verification results. Its Momentum score is 10.0, and no other evaluation scores were provided. The scope of features can therefore be read from the documentation, but the specific changes in v0.7.0 and its real-world performance are hard to judge from this material alone.