SmartFin

Install

Works with Claude Code, VS Code, Cursor, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install connector/smartfin-fyi-smartfin

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What this server can do and what it asks for, from its tool list and install config. Checked Oct 25, 2026.

Tools

20 read · 0 write · 0 deleteRead-only

Secrets

None asked for

Install scripts

Nothing to install (hosted)

Runs as

Hosted (remote endpoint)

Tools (20)

As the server listed them on Oct 25, 2026. Descriptions are the server’s own words; hidden characters are shown as [U+…].

• smartfin_calculate_down_paymentSave for a home down paymentread-only

  How long savings take to reach a home down payment, from what is saved so far plus the same amount each month growing at a fixed yearly rate, and, with reach_within_months, the monthly amount that reaches it by then, the way SmartFin's down payment calculator does. Returns the down payment, the loan amount it leaves, the months to reach it (within 50 years), the modeled savings split into saved so far, deposits and growth, and the monthly amount (rounded up to a whole currency unit) that reaches it within the chosen time. Use when someone asks how long it takes to save for a down payment, how …

• smartfin_calculate_fire_numberFIRE number and years to reach itread-only

  Works the way SmartFin's FIRE calculator does. The FIRE number today is yearly expenses divided by a withdrawal-rate assumption. Each year savings grow at an assumed return with the yearly savings added, while expenses (and so the FIRE number) rise with inflation; FIRE is the first year savings reach that year's FIRE number, searched up to 60 years. Also gives the savings rate and, with a traditional retirement age, the Coast FIRE number. Use for early retirement / FIRE questions: "how much do I need to retire", "when can I retire", "what's my coast FIRE number". Do not use to test how long an…

• smartfin_calculate_future_valueFuture value of an amountread-only

  What a single present amount grows to at a fixed yearly rate with interest added to the balance at a chosen frequency, and the growth over the starting amount (FV = PV x (1 + r/n)^(n x t)). Use for questions about what a lump sum becomes after some years at an assumed rate, or the effect of compounding more often. Do not use for regular contributions (use smartfin_project_savings_growth), for what a real stock did (use smartfin_calculate_investment_return), or for a forecast: one fixed rate is an assumption. To find the starting amount, rate or time instead of the future value, use smartfin_ca…

• smartfin_calculate_inflation_impactInflation impact over timeread-only

  What an amount will be worth in today's money after years of inflation at a fixed yearly rate, and what something costing that amount today will cost then. Use for questions about buying power or future prices at an assumed inflation rate. Do not use for historical CPI lookups: this uses one fixed rate, not official index data.

• smartfin_calculate_investment_returnReturn of one investment strategyread-only

  What an amount invested in a US stock or index ETF became over a past period under one strategy: lump_sum (all on the first trading day), monthly (spread on the trading day nearest the 1st of each month) or buy_the_dip (bought after falls of a set % from the latest high), on real daily closing prices (adjusted for splits and reinvested dividends). Returns final value, total and yearly return, worst fall and Sharpe ratio. Use when the user asks about one specific approach, e.g. "what would $5,000 in Microsoft since 2015 be worth" (lump_sum) or "if I'd put money into SPY every month since 2010" …

• smartfin_calculate_loan_paymentLoan payment and total interestread-only

  Monthly payment, total interest and total paid for a fixed-rate loan with monthly payments: mortgage, car, student or personal loan. Give either loan_amount, or home_price with down_payment_pct for a mortgage. Use when the user asks what a loan costs per month or in total, or how the rate or term changes the cost. Do not use for variable-rate loans, interest-only loans, or credit cards. Excludes taxes, insurance and fees.

• smartfin_calculate_missing_variableSolve for the missing number: future value, starting amount, rate or timeread-only

  Finds the one missing number among four that sit in the same equation, a single amount earning one fixed yearly rate with interest added at a chosen frequency (FV = PV x (1 + r/n)^(n x t)): the future value, the starting amount, the annual rate, or the time in years. Use when the user knows three of the four and wants the fourth, e.g. "what rate turns $10,000 into $20,000 in 10 years", "how many years until $10,000 reaches $20,000 at 6%", or "what do I need to start with to reach $50,000". Do not use for regular contributions (use smartfin_project_savings_growth), for what a real investment di…

• smartfin_calculate_mortgage_payoffPay off a mortgage sooner with extra paymentsread-only

  How much sooner a fixed-rate mortgage (or other fixed-rate loan paid monthly) ends with an extra amount every month, a one-off payment, or both, from today's balance, the way SmartFin's mortgage payoff calculator does. Give the time left (years_left) or the monthly payment from the statement (monthly_payment), not both. Returns the months on each schedule, how many sooner, the interest on the rest of the loan with and without the extra, the difference, the extra paid, the last payment, the smallest whole extra a month that ends the loan 5 years sooner (1 year sooner when 2 to 10 years are left…

• smartfin_calculate_present_valuePresent value of a future amountread-only

  What an amount due in the future is worth today at a fixed yearly discount rate, and the discount between the two (PV = FV / (1 + r/n)^(n x t)). Use for questions about the value today of money received later, at a discount rate the user supplies. Do not use to pick a discount rate (the tool has none of its own), for several payments over time, or for a market price: it discounts one amount at one fixed rate. For growth going forward use smartfin_calculate_future_value.

• smartfin_calculate_profit_marginProfit marginread-only

  The profit and the profit margin percentage from revenue and total costs (margin = (revenue - costs) / revenue x 100). A negative margin is a valid result. Use for questions about profit as a share of sales, from two figures for the same period. Do not use for return on money invested (use smartfin_calculate_roi), for taxes, or to say whether a margin is good: the tool reports the figure only. The cost figure is whatever the user supplies, so it says nothing about gross versus net unless they define it.

• smartfin_calculate_retirement_withdrawalRetirement withdrawals: how long or how muchread-only

  Works the way SmartFin's withdrawal calculator does, with withdrawals monthly, quarterly or annually and the balance earning a yearly return between them. how_long: how many years a balance lasts at a set withdrawal, optionally rising each year with inflation. how_much: the withdrawal that lasts a given number of years, or that never touches the principal (lasts_forever). Use for "how long will my savings last" or "how much can I withdraw". Do not use to find a savings target (use smartfin_calculate_fire_number). Returns are an assumption; excludes taxes and fees.

• smartfin_calculate_roiReturn on investment (ROI)read-only

  The profit or loss and the ROI percentage from an initial investment and a final value (ROI = (final - initial) / initial x 100). Negative results are valid. It is not annualized. Use for questions about the total percentage return on money put in, from two values. Do not use for a return per year (use the CAGR calculator at smartfin.fyi/cagr-calculator.html), for what a real stock returned (use smartfin_calculate_investment_return), or for fees and taxes: include them in the final value yourself.

• smartfin_calculate_savings_vs_investingCompare saving and investing the same moneyread-only

  Compares the modeled balances of a savings account and of an investment after 1 to 50 years, from the same starting amount and the same monthly contribution, the way SmartFin's savings vs investing calculator does. You give the savings rate and the investment return; each is held the same every year. Optional: a yearly increase in the monthly contribution (or one that follows inflation), a yearly fee on investments, and tax on savings interest or investment gains. Returns both modeled balances, money put in, interest, growth, fees and taxes, the difference, the same figures in today's money, t…

• smartfin_calculate_simple_interestSimple interestread-only

  The interest earned and the final amount on a principal at a fixed yearly rate over a number of years, when interest is not compounded (interest = principal x rate x time). Use for questions about simple interest on a loan or deposit, such as a short-term note or a bond coupon at a flat rate. Do not use when interest is added back to the balance (use smartfin_calculate_future_value or smartfin_project_savings_growth), for loan payments (use smartfin_calculate_loan_payment), or for taxes and fees: it applies none.

• smartfin_compare_investment_strategiesCompare lump sum, monthly and buy-the-dipread-only

  Runs one amount through three ways of buying the same US stock or index ETF over a chosen period, on real daily closing prices (adjusted for splits and reinvested dividends): all at once on the first trading day (lump sum), spread evenly on the trading day nearest the 1st of each month, or bought after the price falls a set % from its latest high. Returns each strategy's final value, total and yearly return, worst fall and Sharpe ratio. Use when the user asks which way of investing would have done better for a specific stock or index over a past period, or what an amount would be worth under e…

Signals

Last release

Sep 29, 2026 (1 month ago)

Details

Registry name

fyi.smartfin/smartfin

Version

3.0.0

Auth

Auth not stated

License

License unknown

Website

smartfin.fyi

First seen

Oct 24, 2026

Last checked

Oct 24, 2026

Source

Official MCP Registry