Chimney TopDigital Services

For AI assistants

Connect an AI assistant to our apps

Each app below offers its own calculations as tools an assistant can call through the Model Context Protocol (MCP), so Claude, Codex or any MCP client answers with the app's numbers instead of guessing.

The servers are free, need no account and change nothing: every tool is read-only arithmetic on the values the assistant passes in, and none of them can reach anyone's stored data. Each result carries the same notice the app shows and links the page that reproduces it. How we built them, and the rules every server follows, is in our guide to the MCP interfaces.

  1. CTDS Chimney Top Books

    9 tools for Chimney Top Books: the default chart of accounts, trial balance, profit and loss, schedule c summary and more.

    https://books.chimneytopdigital.com/api/mcp

  2. CTDS Calculators

    10 tools for Chimney Top Calculators: gamma dose rate, activity, distance or shield thickness, radioactive decay, convert radiation units, equivalent dose from absorbed dose and more.

    https://calculators.chimneytopdigital.com/mcp

  3. CTDS Cash Flow Positive

    5 tools for Cash Flow Positive: project daily balances, will i overdraft this month?, dates a rule falls on, find recurring transactions in bank history and more.

    https://cashflow.chimneytopdigital.com/api/mcp

  4. CTDS Contractor Suite

    5 tools for Contractor Suite: the suite's modules, defaults and purchases, estimate vs actual for one job, job-cost dashboard across jobs, service status and cost per hour for a fleet and more.

    https://contractor.chimneytopdigital.com/api/mcp

  5. CTDS Chrome Extensions

    7 tools: list extensions, window and tab overview, parse a saved-windows import file, format tab links and more.

    https://chimneytopdigital.com/api/mcp/extensions

  6. CTDS EZCapsule

    7 tools for EZCapsule: list capsule templates, palette, categories, seasons and formality levels, starter checklist of common pieces, new capsule from a template and more.

    https://ezcapsule.chimneytopdigital.com/api/mcp

  7. CTDS Practice Log

    7 tools for Practice Log: practice stats, year in review, current and best streak, notes auto-fill suggestions and more.

    https://practicelog.chimneytopdigital.com/api/mcp

  8. CTDS Spreadsheet Apps

    8 tools for Sheets templates for small trades: list workbooks and skus, describe a workbook, validate a workbook spec, evaluate a sheets formula and more.

    https://chimneytopdigital.com/api/mcp/sheets

What to expect

  • No sign-in. The servers hold no accounts and ask for none. Tools that would need your data in one of our apps are not offered here.
  • Read-only. Every tool is marked read-only and idempotent, so a client may run it without asking you first. Nothing is stored between calls.
  • Fair use. Requests are rate-limited per address. A request that passes the limit gets a plain error the assistant can read, not a silent failure.
  • The app's own notices. Radiation results carry the educational-estimate notice; bookkeeping and tax figures say they are not tax advice; compliance dates say the license conditions govern. Ask your assistant to show them.
  • Questions. Write to hello@chimneytopdigital.com.