io.github.roadtogideon222-byte/boringtoolskit · v1.0.0 · finance-and-payments
BoringToolsKit is healthy: it completed an MCP handshake in 792 ms and exposes 36 tools.
36 free private calculator tools for Claude. No accounts, no data leaves your session.
Endpoint: https://boringtoolskit.com/mcp (streamable-http)
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| Users (last 30 days) | 0 |
| Handshake | Healthy |
| Auth needed | None |
| Tool count | 36 |
| Latency | 792 ms |
| Last checked (UTC) | 2026-10-15T14:25:11.565Z |
| Checked (UTC) | Status | Latency | Error |
|---|---|---|---|
| 2026-10-15T14:25:11.565Z | Healthy | 792 |
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 percent. |
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 contributed, and dividends reinvested. |
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. |
key_transposition | Transpose a musical key and report the number of semitone steps upward between two keys. |
audio_time_stretch | Compute the new duration of audio at a playback speed, plus the percent time change. |
youtube_revenue | 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. |
ceiling_tile | Count 2x2 ft ceiling tiles needed for a rectangular room, with room area and a 5 percent cut-waste reminder. |
boat_loan | Boat or RV loan payment with optional sales tax, down payment, and trade-in, including amount financed and total interest. |
pressure | Compute pressure in Pascals, kilopascals, and psi from a force in newtons over an area in square metres. |