BoringToolsKit MCP server

• apyFree

  Compute annual percentage yield from a nominal rate and a compounding frequency, plus the one year interest and ending balance on an example deposit.

• audio_time_stretchFree

  Compute the new duration of audio at a playback speed, plus the percent time change.

• auto_loanFree

  Estimate a monthly auto-loan payment from price, down payment, trade-in, term, and APR.

• bmiFree

  Calculate body mass index and category from weight and height in US units.

• bmr_tdeeFree

  Estimate basal metabolic rate (Mifflin-St Jeor) and total daily energy expenditure from age, weight, height, sex, and an activity multiplier.

• boat_loanFree

  Boat or RV loan payment with optional sales tax, down payment, and trade-in, including amount financed and total interest.

• budget_50_30_20Free

  Split monthly after-tax income by the 50/30/20 rule into needs, wants, and savings or debt paydown.

• cagrFree

  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.

• calorieFree

  Estimate BMR and total daily energy expenditure using Mifflin-St Jeor, from weight/height in US units.

• ceiling_tileFree

  Count 2x2 ft ceiling tiles needed for a rectangular room, with room area and a 5 percent cut-waste reminder.

• combinationsFree

  Compute the number of distinct combinations, n choose r, using a multiplicative form that avoids factorial overflow.

• compound_interestFree

  Grow a balance with compound interest and optional monthly contributions. Returns future value, total contributed, and interest earned.

• discount_percent_offFree

  Compute the final checkout total after stacked percentage discounts, a fixed coupon, and a tax assumption. Sequential discounts are NOT additive.

• dividend_reinvestmentFree

  Compound a portfolio with a constant dividend yield and price growth, reinvesting monthly and optionally adding deposits. Returns ending value, total contributed, and dividends reinvested.

• emergency_fundFree

  Emergency fund target (expenses times coverage months), the remaining gap versus current savings, and months to close the gap at a fixed monthly contribution.

• gross_rent_multiplierFree

  Gross rent multiplier for a rental property: price divided by annual gross rent. Lower means more rent per dollar of price.

• growing_degree_dayFree

  Accumulate growing, heating, or cooling degree days (Fahrenheit basis) from daily high, low, a base threshold, and a day count. Includes Celsius-basis totals.

• insulationFree

  U-value of an insulation upgrade and an estimated annual heating saving from conduction, using heating degree days, area, kWh conversion, and utility cost.

• key_transpositionFree

  Transpose a musical key and report the number of semitone steps upward between two keys.

• maintenance_caloriesFree

  Daily maintenance calories (TDEE) from Mifflin-St Jeor BMR and an activity level, using metric inputs.

• margin_of_errorFree

  Compute the margin of error for a survey sample at the 90, 95, or 99 percent confidence level, assuming maximum variance proportions.

• mortgage_paymentFree

  Estimate the full monthly housing payment (principal, interest, tax, insurance, PMI, HOA) and the total interest over the term. Requires a positive home price.

• percentageFree

  Solve percentage problems: what is X% of Y, X is what % of Y, or the % change from X to Y.

• pressureFree

  Compute pressure in Pascals, kilopascals, and psi from a force in newtons over an area in square metres.

• protein_molecular_weightFree

  Estimate a protein chain molecular weight in Da and kDa from residue count and average residue mass, plus peptide bond count.

• remainderFree

  Compute the remainder and floored quotient of a division. Works for decimal inputs, not just integers.

• roofingFree

  Roof area from footprint and pitch, with waste allowance, roofing squares, and approximate shingle bundles (3 per square).

• rule_of_72Free

  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 percent.

• savings_growthFree

  Project the future value of a lump-sum investment (optionally with monthly additions), including interest earned.

• simple_interestFree

  Compute simple interest, total value, and a comparison to annual compounding.

• slopeFree

  Compute slope from rise and run as degrees, percent grade, and the rise to run ratio. Run must be above zero.

• square_footageFree

  Compute total area (and with-waste area) from up to two rectangular spaces, plus square yards, square metres, and acres.

• tip_bill_splitFree

  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.

• va_mortgageFree

  Monthly VA loan payment including the funding fee, with no PMI. Returns the financed amount, payment, and total interest.

• win_loss_percentageFree

  Compute a winning percentage from wins, losses, and ties, where ties count as half a win.

• youtube_revenueFree

  Estimated YouTube Adsense revenue from monthly views and RPM, with an annual figure and a 30 percent RPM swing range. RPM defaults to 2 when omitted.

• –Code scanremote-only server, no package to scann/a
• Live reliabilityremote reachable in 409ms20/20
• Tool poisoning36 tool descriptions checked15/15
• Auth qualityopen endpoint, read-only tools10/15
• Maintenancelast push 0 days ago15/15
• Maintainer identityregistry namespace matches repository owner6/10

Safety score

88/100

higher than 75% of 48,255 servers

Tools

36

the typical server has 7

Tools that change things

0%

typical: 0%. Fewer write tools means less an agent can break

Uptime

100%

of our recent checks; the typical remote server answers 100%

Response time

80 ms

faster than 88% of 30,031 servers

BoringToolsKit: common questions

Is BoringToolsKit MCP server safe?

Yes, by our scan: it is graded A (88/100). Read the BoringToolsKit safety report

How do I install BoringToolsKit?

It runs remotely at boringtoolskit.com. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.

Does BoringToolsKit need an API key?

Not as far as the registry entry and our scan can tell: no credentials are declared or required.

Is BoringToolsKit maintained?

The last commit was 21 days ago (2026-10-14). The latest release is v1.0.0.

Is BoringToolsKit up?

100% of our last 28 checks got an answer. We check remote servers about four times a day.

How does BoringToolsKit compare with other MCP servers?

safety score 88/100 (higher than 75% of 48,255 servers); tools 36 (the typical server has 7); tools that change things 0% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.