io.github.VladimirWrites/nestegg-calculators

up checked 2026-11-11T04:38:01.546Z

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Publisher-provided description

90+ pure finance calculators: loans, investing, bonds, options, tax. Stateless, stores nothing.

Summary by lookupd

Runs stateless finance calculations for loans, investing, bonds, options, and German tax, storing no data.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http nestegg-calculators https://nestegg.money/mcp

Codex, remote (streamable-http)

codex mcp add nestegg-calculators --url https://nestegg.money/mcp

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

{
  "mcpServers": {
    "nestegg-calculators": {
      "url": "https://nestegg.money/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 99)

Publisher-provided text

amortization Monthly loan amortization schedule and summary. Supports dated extra principal payments and a rate-fixed period. detail controls output size: 'summary' (default
loan-payoff Time and interest saved by paying a fixed extra amount every month on a loan, versus the baseline schedule.
future-value Future value of a single lump sum compounded annually.
contributions Future value of a fixed monthly contribution, optionally stepping up each year.
cagr Compound annual growth rate between two values over a number of years. Returns a decimal (0.07 means 7%).
savings-rate Fraction of income saved (savings divided by income). Returns a decimal.
fx-convert Convert an amount using a rate supplied by the caller (units of target currency per unit of source). No rate is ever looked up.
depreciate Value after compounding down (or up) at a yearly percentage rate over a number of years. This is the method the app uses for long-term assets.
straight-line-depreciation Straight-line depreciation: value falling evenly to a salvage value over a useful life.
fire-number FIRE target nest egg from annual spend and a safe withdrawal rate (default 4%), plus the gap from today and the years to reach it given optional savings and gro
required-contribution Inverse of contributions: the fixed monthly amount needed to reach a target future value over a number of months, given an optional starting balance.
inflation-adjust Convert a nominal amount to today's purchasing power (real), or with toNominal inflate a real amount forward, at a given annual inflation rate.
effective-rate Convert a nominal annual rate to the effective annual rate (APY) for a compounding frequency, or with toNominal recover the nominal rate from an APY.
npv Net present value of a cashflow series (index 0 is today; outflows negative) discounted at a per-period rate.
irr Internal rate of return: the per-period rate that zeroes the NPV of a cashflow series. Returns a percent, or null when the series never crosses zero.
refi-breakeven Refinance break-even: monthly saving, whole months to recoup closing costs, and (if remainingMonths given) the net saving over the remaining term.
emergency-fund Months of runway: liquid savings divided by monthly expenses.
mortgage-affordability Maximum loan and home price the income supports: the DTI cap on gross monthly income (less existing debts) sets the payment, whose present value at the rate and
debt-payoff Multi-debt payoff plan under a fixed monthly budget. method 'avalanche' (highest rate first) minimizes interest; 'snowball' (smallest balance first) clears acco
portfolio-longevity How many years a balance lasts while withdrawing from it: the balance grows each year, then the withdrawal (optionally stepping up) is taken. Returns the deplet
present-value Present value of a single future amount discounted annually. The inverse of future-value.
required-return Annual return needed to grow a starting value to a target over a number of years, optionally with a fixed annual contribution. With no contribution this equals
yield-to-maturity Bond yield to maturity: the nominal annual yield that prices a bond at the given price, with periodic coupons and face returned at maturity. Solved numerically.
tax-from-brackets Progressive tax from caller-supplied brackets. No jurisdiction, year, or rates are baked in: pass the brackets yourself. Returns total tax, effective rate, and
margin-markup Convert between margin and markup. Supply any one of cost/price plus one of marginPct/markupPct (or both cost and price); returns cost, price, profit, marginPct
compound-interest Compound growth at any frequency, with an optional contribution each period (paid at period end). Generalizes future-value (periodsPerYear 1) and contributions
de-gross-to-net German net (Netto) salary from gross (Brutto). No tax tables are baked in: look up the current year's statutory figures and pass them in. Income tax (Lohnsteuer
de-net-salary Exact German net (Netto) salary from annual gross (Brutto) for tax years 2023-2026. Income tax and Soli follow the official BMF Programmablaufplan for the year
de-abgeltungsteuer German flat tax on capital income (Abgeltungsteuer, §32d EStG) for tax years 2023-2026 with the year's Sparerpauschbetrag built in. 25% above the allowance, Sol
de-kindergeld German child benefit (Kindergeld) for 2023-2026: the year's flat monthly amount per child (uniform since 2023), as monthly and annual totals.

Details

Version: 1.4.0
Transports: streamable-http
Uptime (7 days): 100%
Median latency: 296 ms
First indexed: 2026-11-01T09:17:56.749Z
Last seen in registry: 2026-11-01T09:17:56.790Z
Repository: https://github.com/VladimirWrites/nestegg.money

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62141 servers
Last crawl: 2026-11-11T18:17:25.333Z
API base: https://api.lookupd.com
MCP URL: https://api.lookupd.com/mcp