Typed zero-dependency client for Dicta's free Nakdan API — automatic Hebrew vocalization (niqqud).

Hebrew gematria with all the classical methods — gadol, katan, siduri, milui, atbash, and more. Zero dependencies.

IRS RMD math — Uniform Lifetime & Single Life tables (Pub 590-B 2022+) + SECURE 2.0 age logic. Zero dependencies.

US Truth in Lending APR — Regulation Z Appendix J actuarial method. Zero dependencies.

Equity vesting schedule math — cliffs, tranches, fractional-share conventions, acceleration. Zero dependencies.

Startup exit waterfall — liquidation preferences, participation caps, conversion equilibrium. Zero dependencies.

Priced venture-round dilution math — the option-pool shuffle, PPS, ownership tables. Zero dependencies.

Convert YC SAFEs + convertible notes into a pro-forma cap table at a priced round. Zero dependencies.

Typed zero-dependency client for the CFTC Commitments of Traders reports — Legacy, Disaggregated, TFF. No API key.

Typed zero-dependency client for the US Treasury FiscalData API — Debt to the Penny, interest & exchange rates. No API key.

Typed zero-dependency client for the US Treasury's free public APIs — auctions, CUSIP lookups, Debt to the Penny. No API key.

Typed zero-dependency client for the NY Fed Markets Data API — SOFR and friends, averages & index, SOMA. No API key.

CUSIP, ISIN, SEDOL, FIGI, LEI — validate, parse, compute check digits, convert. Zero dependencies.

Gatheral SVI vol surface — raw/natural/jump-wings, butterfly & calendar arbitrage checks, calibration. Zero dependencies.

The SABR stochastic-vol model — Hagan 2002 lognormal & normal implied vol, Obloj correction, smile calibration. Matches QuantLib. Zero deps.

Perpetual futures funding math — payments, APR/APY, cumulative funding, cross-venue arb carry. Zero dependencies.

FX trading conventions math — forward points, cross-rates, triangular arbitrage, pips. Zero dependencies.

SOFR compounding-in-arrears — ARRC/ISDA conventions, SOFR Index method, compounded average. Reproduces NY Fed published values. Zero deps.

US Treasury price math — parse & format 32nds quotes (105-16+), ticks, and basis points. Zero dependencies.

US TIPS inflation math per 31 CFR 356 App B — reference CPI, index ratios, adjusted principal, deflation floor. Zero dependencies.

US Treasury bill yield math — discount rate, price, bond-equivalent yield. Treasury's own formulas, zero dependencies.

Bond accrued interest between coupon dates — ACT/ACT-ICMA (US Treasuries), 30/360, ACT/360. Zero dependencies.

ISDA day-count conventions — 30/360, 30E/360, ACT/360, ACT/365F, ACT/ACT ISDA & ICMA. Zero dependencies.

FX settlement/value-date math — spot, tom, forward tenors across two currency calendars, USD-lag & EOM rules. Zero dependencies.

US bond-market holidays, early closes, and T+1 settlement dates per SIFMA recommendations. Zero dependencies.

NYSE/NASDAQ trading calendar — holidays, early closes, trading-day navigation, DST-aware is-market-open. Zero dependencies.

Five instruments synthesized live in your browser — steelpan, theremin, kalimba, glass harp and lever harp — with nine songs, a play-along coach and a lesson page for every song.

Any stock, converted to sand: the price builds the dunes, a camel caravan walks the chart, and the oasis tells you if liquidity is real or a mirage.

MosheMalka dot com source code written in NextJS

The Website That Goes Wrong — a product launch staged as live theatre that falls deliberately, gloriously apart