> ## Documentation Index
> Fetch the complete documentation index at: https://sdk.grid.is/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

> Turn spreadsheets into RESTful APIs

GRID's API enables you to use your data in a powerful spreadsheet engine, fully compatible with Excel and Google Sheets, and transform your spreadsheets into RESTful APIs.

## Key features

* **Workbook querying**: read and write values from cells, automatically recalculating dependent cells. To query data, use our [calc](/api-reference/workbooks/calc) or [values](/api-reference/workbooks/values) endpoints
* **Semantic metadata**: access the semantic info in a workbook using our [labels](/api-reference/workbooks/labels) or [parameters](/api-reference/workbooks/parameters) endpoints. Run a semantic search across all your workbooks using our [label search](/api-reference/workbooks/search-labels) endpoint
* **Chart rendering**: generate charts (PNG or SVG) from spreadsheet data with customizable chart types (line and column). To generate a chart, use our [chart endpoint](/api-reference/workbooks/render-chart)
* **Export scenarios**: apply values to cells and download the updated spreadsheet. To export an updated spreadsheet, use our [export endpoint](/api-reference/workbooks/export)
* **Goal seek operations**: execute goal-seek operations to determine the solution of a target cell by modifying a control cell. Try a goal seek using our [advanced query endpoint](/api-reference/workbooks/query)
* **Stateless**: recalculations without permanent writes