Bilig
Formula WorkPaper and XLSX recalculation runtime for Node.js services and agent tools: edit cells, recalc, verify readback, persist JSON.
What is Bilig?
Bilig is a Model Context Protocol (MCP) server that allows AI assistants like Claude, Cursor, and VS Code to formula workpaper and xlsx recalculation runtime for node.js services and agent tools: edit cells, recalc, verify readback, persist json.
Formula WorkPaper and XLSX recalculation runtime for Node.js services and agent tools: edit cells, recalc, verify readback, persist JSON.
This server falls under the Business Applications category on MCPgee, the world's largest MCP server directory with 33,000+ servers.
Features
- Formula WorkPaper and XLSX recalculation runtime for Node.js
Use Cases
Maintainer
Works with
Installation
Manual Installation
npx biligConfiguration
Configuration Details
claude_desktop_config.json
Performance
Response Metrics
Resource Usage
How to Set Up and Use Bilig
Bilig is a Formula WorkPaper runtime for Node.js that treats Excel-compatible spreadsheet files as executable, formula-driven documents — allowing AI agents to edit cells, trigger recalculation, verify formula readback, and persist results as JSON or XLSX without launching Excel or a browser. It ships a dedicated MCP server (bilig-workpaper-mcp) exposing tools for reading ranges, setting cell contents, validating formulas, and exporting workpapers, making it practical for financial modeling agents, pricing engines, and any workflow where structured calculation with spreadsheet formulas is a core requirement.
Prerequisites
- Node.js 18+ installed on your system
- npm or npx available on your PATH
- An Excel-compatible workpaper file (.xlsx) or a Bilig WorkPaper definition
- An MCP-compatible client such as Claude Desktop
Install the Bilig WorkPaper package
Install the main @bilig/workpaper package which includes the MCP server binary (bilig-workpaper-mcp).
npm install @bilig/workpaperCreate a WorkPaper or import an existing XLSX
You can scaffold a new workpaper project or import an existing .xlsx file. The scaffold command creates a structured project with sheets, formulas, and agent configuration.
# Scaffold a new workpaper:
npm create @bilig/workpaper@latest my-pricing-model
# Or scaffold with agent support:
npm create @bilig/workpaper@latest my-pricing-model -- --agentStart the Bilig MCP server
Run the bilig-workpaper-mcp binary, pointing it at your workpaper file or directory. The server exposes MCP tools for reading, editing, and validating the workpaper.
npx --yes --package @bilig/workpaper@latest bilig-workpaper-mcp --door workpaper-service --jsonAdd the server to your MCP client configuration
Configure Claude Desktop to run the bilig-workpaper-mcp server via npx with your workpaper path.
{
"mcpServers": {
"bilig": {
"command": "npx",
"args": ["--yes", "--package", "@bilig/workpaper@latest", "bilig-workpaper-mcp", "--json"]
}
}
}Interact with your workpaper through Claude
Restart Claude Desktop and start querying or editing your workpaper. Claude can read cell ranges, update values, verify formula recalculation, and export the workpaper.
Bilig Examples
Client configuration
Claude Desktop configuration running the bilig-workpaper-mcp server via npx with the @bilig/workpaper package.
{
"mcpServers": {
"bilig": {
"command": "npx",
"args": [
"--yes",
"--package",
"@bilig/workpaper@latest",
"bilig-workpaper-mcp",
"--json"
]
}
}
}Prompts to try
Agent-oriented queries that use the list_sheets, read_range, set_cell_contents, validate_formula, and export_workpaper_document tools.
- "List all sheets in the current workpaper"
- "Read the range A1:D10 from the 'Inputs' sheet"
- "Set cell Inputs!B2 to 32 and tell me the recalculated value in Summary!B2"
- "Validate the formula in cell Summary!C5 and report any errors"
- "Analyze the workbook for formula risks and circular dependencies"
- "Export the current workpaper state as an XLSX file"Troubleshooting Bilig
bilig-workpaper-mcp command not found after npm install
The binary is installed inside node_modules/.bin/. Either use 'npx bilig-workpaper-mcp' or run it via the full path './node_modules/.bin/bilig-workpaper-mcp'. For global access, install with 'npm install -g @bilig/workpaper'.
Formula recalculation returns stale or incorrect values after cell edits
Run the xlsx-cache-doctor tool to detect stale cached formula values: 'npx --package @bilig/workpaper@latest xlsx-cache-doctor <file.xlsx>'. If stale formulas are detected, use 'xlsx-recalc' to refresh them before loading into the MCP server.
XLSX import fails with 'unsupported formula' error
Bilig supports Excel-compatible formula syntax but not all Excel-specific functions (e.g., XLOOKUP may not be supported). Use the bilig-formula-clinic tool to get a diagnostic report: 'npx --package @bilig/workpaper@latest bilig-formula-clinic <file.xlsx>'.
Frequently Asked Questions about Bilig
What is Bilig?
Bilig is a Model Context Protocol (MCP) server that formula workpaper and xlsx recalculation runtime for node.js services and agent tools: edit cells, recalc, verify readback, persist json. It connects AI assistants to external tools and data sources through a standardized interface.
How do I install Bilig?
Follow the installation instructions on the Bilig GitHub repository. Clone the repo, install dependencies, and add the server config to your AI client.
Which AI clients work with Bilig?
Bilig works with all major MCP-compatible AI clients including Claude Desktop, Claude Code, Cursor, VS Code (GitHub Copilot), Windsurf, and Cline.
Is Bilig free to use?
Yes, Bilig is open source and available under the MIT license. You can use it freely in both personal and commercial projects.
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