Bilig WorkPaper

Formula-backed WorkPaper tools for workbook readback, input edits, and JSON persistence.

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What it can do

    What data it sees

    Do you need an account

    No: the server works without sign-in

    Formula-backed WorkPaper tools for workbook readback, input edits, and JSON persistence.

    How to connect

    How to connect Bilig WorkPaper to Claude

    The server address to paste into Claude settings:

    https://bilig.proompteng.ai/mcp

    1. Open Claude (claude.ai or the desktop app).
    2. Go to Settings → Connectors.
    3. Click Add custom connector.
    4. Paste the server address copied below into Remote MCP server URL and click Add.
    5. In a chat, click + → Connectors and switch the new connector on.

    Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

    Authorization

    After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

    How to connect Bilig WorkPaper to ChatGPT

    The server address to paste into ChatGPT settings:

    https://bilig.proompteng.ai/mcp

    1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
    2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
    3. Open Settings → Connectors and click Create.
    4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
    5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
    6. In a new chat open + → Apps/Connectors and enable the connector.

    OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

    Authorization

    On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

    How to connect Bilig WorkPaper to Cursor

    The server address to paste into Cursor settings:

    https://bilig.proompteng.ai/mcp

    Fastest: click Open in Cursor below and confirm the prompt.

    Manually:

    1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
    2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
    3. Save the file. The server appears in the MCP list; authorize it there if asked.

    Authorization

    If the service needs sign-in, an authorize button appears next to the server in the MCP list.

    Server tool list (8)

    Raw names from tools/list. Only developers need these.

    list_sheetsDiscover sheet names and used dimensions before reading or editing a WorkPaper. Returns metadata only; use read_range or read_cell for values.
    read_rangeRead calculated values plus serialized formulas/inputs for an A1 range. Use for audit readback after edits; use read_cell for one address.
    read_cellRead one cell with calculated value, display text, formula text, formula diagnostics, and serialized content. Use after set_cell_contents to verify readback.
    set_cell_contentsWrite raw content to one cell and recalculate dependents in memory only. Start with --writable when the edit should persist to JSON.
    set_cell_contents_and_readbackWrite raw content to one cell, recalculate dependents, read a dependent range in the same tool call, and return persistence proof. Use this for stateless MCP clients such as hosted Open WebUI integrations.
    get_cell_display_valueReturn the formatted display string for one cell. Use when an agent needs what a user would see, not the raw numeric value.
    export_workpaper_documentExport the current WorkPaper JSON document for persistence, review, or handoff to another agent. Does not write files by itself.
    validate_formulaValidate formula syntax with the WorkPaper parser before writing it to a cell. This checks syntax only; use set_cell_contents plus readback to evaluate.