Implied is a tool that reduces boilerplate cruft in your ExpressJS web app by providing reusable web app components.

Determine implied volatility of options based on their prices

hixme-ui placeholder component for implied views that are pending api results.

class based controllers, and implied folder route mapping for Fastify

Convert betting odds between decimal, fractional, American and implied probability formats. Payout and bookmaker margin calculators included. Zero dependencies.

MCP server exposing Volmex Finance implied-volatility index data (/history and /symbol_info) as tools, plus Volmex docs and REST API references as resources.

Gatheral SVI implied-volatility surface — raw/natural/jump-wings parametrizations, total variance, butterfly & calendar arbitrage checks, and smile calibration. Zero dependencies.

Complete plug and play Black-Scholes-Merton model for option pricing with features including implied volatility and Greeks.

Allows exposing a module via `eval`. Useful if you have a module that needs to attach a bunch of things on to the global scope using implied globals (like function definitions).

node-gamepad is a package for node that allows you to effortlessly interface your node applications with a variety of gamepad controllers. This is a port of node-gamepad library to typescript by also removing some of the restrictions implied by this libra

Typed TypeScript client for the Hunch on Casper agent economy — market discovery, pool-implied parimutuel odds, leaderboards, and x402 bet placement.

The SABR stochastic-volatility model — Hagan (2002) lognormal & normal implied-vol expansions, the Obłój correction, and (alpha, rho, nu) smile calibration. Matches QuantLib. Zero dependencies.

The smallest legally compliant cookie consent banner. ~7KB gzipped. Auto-detects EU for GDPR, implied consent elsewhere. Scoped Web Components with Shadow DOM.

A cryptographic commitment scheme with implied order of ownership wasm module for nodejs and the browser.

Official JavaScript/TypeScript SDK for the FlashAlpha options analytics API — live options screener, gamma exposure (GEX), delta exposure (DEX), vanna exposure (VEX), charm exposure (CHEX), VRP, implied volatility, volatility surface, 0DTE analytics, BSM

Generator for Polymer component with some implied best practices (imd, typescript, es2015)

TypeScript port of Peter Jaeckel's LetsBeRational normalized Black and implied volatility routines.

Prebuilt sharp for use with Linux (glibc) x64

Prebuilt sharp for use with Linux (musl) x64

TypeScript option pricing, implied volatility, and Greeks built on LetsBeRational.