io.github.roadtogideon222-byte/boringtoolskit

up checked 2026-11-11T07:38:37.524Z

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Publisher-provided title

BoringToolsKit

Publisher-provided description

36 free private calculator tools for Claude. No accounts, no data leaves your session.

Summary by lookupd

Offers 36 offline calculator tools for finance, health, construction, and math, with no accounts or stored data.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http boringtoolskit https://boringtoolskit.com/mcp

Codex, remote (streamable-http)

codex mcp add boringtoolskit --url https://boringtoolskit.com/mcp

Cursor, remote (streamable-http) → .cursor/mcp.json

{
  "mcpServers": {
    "boringtoolskit": {
      "url": "https://boringtoolskit.com/mcp"
    }
  }
}

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Tools (showing 30 of 36)

Publisher-provided text

• tip_bill_split Split a bill across a group after tax, tip, and optional rounding. Returns each person's share, the tip, the effective tip rate, and the collected total.
• discount_percent_off Compute the final checkout total after stacked percentage discounts, a fixed coupon, and a tax assumption. Sequential discounts are NOT additive.
• bmi Calculate body mass index and category from weight and height in US units.
• bmr_tdee Estimate basal metabolic rate (Mifflin-St Jeor) and total daily energy expenditure from age, weight, height, sex, and an activity multiplier.
• mortgage_payment Estimate the full monthly housing payment (principal, interest, tax, insurance, PMI, HOA) and the total interest over the term. Requires a positive home price.
• auto_loan Estimate a monthly auto-loan payment from price, down payment, trade-in, term, and APR.
• compound_interest Grow a balance with compound interest and optional monthly contributions. Returns future value, total contributed, and interest earned.
• savings_growth Project the future value of a lump-sum investment (optionally with monthly additions), including interest earned.
• simple_interest Compute simple interest, total value, and a comparison to annual compounding.
• calorie Estimate BMR and total daily energy expenditure using Mifflin-St Jeor, from weight/height in US units.
• percentage Solve percentage problems: what is X% of Y, X is what % of Y, or the % change from X to Y.
• square_footage Compute total area (and with-waste area) from up to two rectangular spaces, plus square yards, square metres, and acres.
• apy Compute annual percentage yield from a nominal rate and a compounding frequency, plus the one year interest and ending balance on an example deposit.
• win_loss_percentage Compute a winning percentage from wins, losses, and ties, where ties count as half a win.
• slope Compute slope from rise and run as degrees, percent grade, and the rise to run ratio. Run must be above zero.
• rule_of_72 Estimate the doubling time of money at a fixed rate using the rule of 72, plus the exact doubling time from the compound formula. Rate must be between 0 and 30
• cagr Compute the compound annual growth rate connecting a starting and an ending value over a number of years, with total return percent and absolute change.
• remainder Compute the remainder and floored quotient of a division. Works for decimal inputs, not just integers.
• combinations Compute the number of distinct combinations, n choose r, using a multiplicative form that avoids factorial overflow.
• margin_of_error Compute the margin of error for a survey sample at the 90, 95, or 99 percent confidence level, assuming maximum variance proportions.
• va_mortgage Monthly VA loan payment including the funding fee, with no PMI. Returns the financed amount, payment, and total interest.
• gross_rent_multiplier Gross rent multiplier for a rental property: price divided by annual gross rent. Lower means more rent per dollar of price.
• emergency_fund Emergency fund target (expenses times coverage months), the remaining gap versus current savings, and months to close the gap at a fixed monthly contribution.
• dividend_reinvestment Compound a portfolio with a constant dividend yield and price growth, reinvesting monthly and optionally adding deposits. Returns ending value, total contribute
• budget_50_30_20 Split monthly after-tax income by the 50/30/20 rule into needs, wants, and savings or debt paydown.
• growing_degree_day Accumulate growing, heating, or cooling degree days (Fahrenheit basis) from daily high, low, a base threshold, and a day count. Includes Celsius-basis totals.
• insulation U-value of an insulation upgrade and an estimated annual heating saving from conduction, using heating degree days, area, kWh conversion, and utility cost.
• roofing Roof area from footprint and pitch, with waste allowance, roofing squares, and approximate shingle bundles (3 per square).
• maintenance_calories Daily maintenance calories (TDEE) from Mifflin-St Jeor BMR and an activity level, using metric inputs.
• protein_molecular_weight Estimate a protein chain molecular weight in Da and kDa from residue count and average residue mass, plus peptide bond count.

Details

• Version: 1.0.0
• Transports: streamable-http
• Uptime (7 days): 100%
• Median latency: 478 ms
• First indexed: 2026-11-01T09:51:27.013Z
• Last seen in registry: 2026-11-01T09:51:27.013Z
• Repository: https://github.com/roadtogideon222-byte/boringtoolskit

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• Last crawl: 2026-11-11T17:38:11.606Z
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• MCP URL: https://api.lookupd.com/mcp