bilig
Active·★ 29·MIT·Updated 2026-05-29
★ Trending★ Browser Automation★ Workflow Automation
Fast headless spreadsheet engine for Node.js formulas, workbook automation, WorkPaper JSON, and agent workflows.
bilig is a headless workbook runtime for TypeScript. It allows Node.js services, agent tools, and serverless functions to use spreadsheet formulas and workbook state programmatically without a visual interface. It features formula evaluation, persistence, round-trip verification, and MCP support.
#agent-tools#ai-agents#coding-agents#formula-engine#headless-spreadsheet#headless-workbook#langchain#mcp
01
Features
01Headless workbook engine with formula parsing, compilation, and evaluation
02Programmatic workbook creation, mutation, snapshot, and restoration
03Deterministic formula round-trip persistence and verification
04Agent-addressable API with tool-calling and MCP server support
05Performance benchmark leadership (46/46 mean wins vs HyperFormula)
02
Compatibility
Node.js
Node.js
Verified via docs
03
Quick start
1
$ npm install @bilig/headless
04
Use cases
↳Server-side spreadsheet automation (e.g., invoice totals, budget variance)
↳Agent tool for writing input cells and returning calculated results
↳Backend job with formula-backed workbook state persistence
05
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Comments
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- FFinley ThompsonApr 26, 2026
Fast execution makes it practical for batch processing workflows.
- RRebel AndersonApr 21, 2026
Works correctly with multi-sheet dependencies, which many alternatives get wrong.
- RRiver WilsonApr 20, 2026
Headless spreadsheet engine for Node.js that handles complex Excel formulas reliably.
- HHayden PatelFeb 26, 2026
Good for server-side workbook automation where you need formula evaluation without a UI.