the spreadsheet runtime for agents
a headless, excel-compatible calc engine with branches, diffs and review — driven over an API and MCP, by your agents and your team. every change is journaled, every version addressable, every merge reviewable.
| A | B | |
|---|---|---|
| 1 | Q3 revenue | 42,000 |
| 2 | Q3 costs | 18,500 |
| 3 | margin | 23,500 |
| 4 | margin % | 56% |
excel-compatible engine
a real calc engine (Rust, hundreds of functions) that evaluates the formulas your spreadsheets already use — headless, on the server, over an API.
branch, diff, review
fork a sheet, let an agent work on the branch, then see a red/green diff of exactly what changed — values and formulas — and merge only when it's approved.
built for agents
MCP-first: an agent connects, creates a sheet, writes cells, reads slices. self-serve keys, no dashboards required. people get the same power in the browser.
every version kept
the journal is the source of truth — every op recorded, every state addressable and restorable. no silent overwrites, no lost history.
how it works
- connect over the API or MCP — self-serve, one key
- create a sheet and write cells; formulas evaluate on the server
- branch it, let an agent make changes, review the diff
- merge when it's right — every version stays addressable