TrueCalc

TrueCalc

A spreadsheet formula engine with Google Sheets conformance, for Rust, JavaScript/WASM, MCP, and (soon) a hosted API.

TrueCalc is a spreadsheet formula engine with Google Sheets conformance, for Rust, JavaScript/WASM, MCP, and (soon) a hosted API.

  • Learn — a beginner→advanced guide to spreadsheet formulas and workbooks with TrueCalc.
  • Reference — functions, error codes, dialects, and the workbook schema.
  • API — MCP tools and the hosted REST API.

API

Integrate TrueCalc — MCP tools for agents, REST endpoints for services, and the Rust/npm packages.