The spreadsheet engine for AI agents
Agents call spreadsheet operations directly instead of burning tokens generating code. Ready-made, familiar UI for when humans need to read or edit. Fast, rigorously tested, and quick to integrate.
npm install @grid-is/spreadsheet-engineInstall GRID's spreadsheet engine skill:
npx -y skills add GRID-is/spreadsheet-skills --skill spreadsheet-engine -g -y
Read it, then tell me where GRID's packages could improve this project, with or without LLMs. Install any other GRID skill you need.Install GRID's spreadsheet AI assistant skill:
npx -y skills add GRID-is/spreadsheet-skills --skill spreadsheet-ai-assistant -g -y
Then build a React app with an editable spreadsheet next to a chat panel on GRID's packages: drag and drop an .xlsx to open it, ask the assistant to read and change it, edit cells yourself, download the updated file.Add GRID's spreadsheet tools to this agent as an MCP server, then use them to read, calculate and edit my workbooks:
npx -y @grid-is/agent-toolsFewer tokens and faster responses
The GRID engine gives AI agents the tools to interact with spreadsheets at up to 2x the speed, and a 1/3 of the token usage.
Times and token counts are illustrative. Real results vary with the model, spreadsheet, and task. The gap is sometimes smaller and often much larger.
Our products
The deterministic engine your AI agents need.
The familiar UI surfaces your users expect.
Spreadsheet Engine
Spreadsheet logic and calculations, running natively inside your application. Headless, fast, and fully compatible with Excel and Google Sheets out of the box. Agent Tools run on the same engine, so your agents read, calculate, and edit spreadsheets directly instead of generating code.
Built with an agent, on top of a spreadsheet
A coding agent built this on top of a financial analyst's Excel model. Drag the sliders and watch the GRID engine recalculate hundreds of cells in real time.
Monthly payment
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Down payment
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Total interest
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91.25%
SpreadsheetBench verified 400
Top performer on SpreadsheetBench
SpreadsheetBench scores agents on real spreadsheet tasks taken from Excel forums, comparing the cells an agent produces against an expert's answer. Ours was evaluated by the benchmark team on the expert-verified 400, running Claude Sonnet with the same agent tools we ship.
The bridge between LLMs and spreadsheets
Spreadsheets are deceptively complex, and language models struggle to manipulate them accurately. To read or modify one, an LLM has to generate code each time, which is slow, costly in tokens, and failure-prone as complexity grows. Most agents still generate and run code every time they touch a spreadsheet.
GRID gives your agent a structured interface to read cells, apply changes, and recalculate with a function call, not generated code. Results are deterministic, the same reliable recalculation as Excel and Google Sheets. The engine also enables LLMs to generate spreadsheets from scratch, accurately and at scale.
Trusted by teams that can't afford to get it wrong
Major investment banks
An Excel add-in that generates and edits with confidence
Working with an AI platform used at major investment banks, we built an Excel add-in where the model runs domain-specific skills with the GRID engine instead of acting on Excel directly. The engine sandboxes the spreadsheet and catches errors before anything touches the file, so the model never corrupts an important document.
Leading LLM provider
Spreadsheet logic the model can call directly
A leading LLM provider builds on GRID at the core of its spreadsheet capabilities. Instead of generating brittle code to read or modify a sheet, the model calls a structured interface backed by GRID's deterministic engine, which keeps spreadsheet-driven workflows reliable as they scale.
Get started now
Install the engine from npm with a free evaluation license and start building today. When you are ready to ship, talk to us. Most teams are surprised how quickly they go from first install to production, with direct support from the GRID team throughout.