Protocol-only core gem: Adapter contract, capability registry, manifest builder, and an MCP server wrapper. No commerce-backend deps.

Implements Portage::Ucp::Adapter against Shopify's Admin (catalog, order) and Storefront (cart, checkout) GraphQL APIs. Generic only — no merchant-specific business logic. Plain Net::HTTP, no shopify_api runtime dependency.

Pronto runner for golang tools

Uses oauth2 to connection to the Powerschool API. Heavily refactored code (not dependent on Rails) starting with: https://github.com/TomK32/powerschool

Add pool usage statistics within your log files.

Pure-Ruby implementation of Black-Scholes European and CRR Binomial American option pricing with delta, gamma, theta, vega, rho, and Brent's-method implied volatility. No Python, no QuantLib system dep, no native code.

High-throughput, resumable snapshots of MongoDB collections with partitioning, multi-threaded readers, and size-based sharded outputs.

QAT-DB provides generic methods for connecting to and handling databases: - Quick connection - One line queries - Advanced querying and scripting through Sequel

Direct Quack protocol client for Ruby, powered by Rust

a querying language for the internet

MRI Ruby bindings for pooled and standalone QuestDB Wire Protocol ingestion, queries, direct columnar and optional Arrow C Stream writes, and safe pool-wide callbacks, backed by the official C client.

Middleware collection to secure a Rack application

Framework-independent USDT amount reservation and deposit retrieval for Rails payment integrations.

The easiest way to get random records from database with best performance that you ever seen.

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Rbcli is a framework to quickly develop command-line tools and applications.

Symbols are indeterminates, the ordinary operators build expression trees, and irb is the REPL. Exact arithmetic first; calculus, solving, polynomial rings, finite fields, linear algebra, differential equations, summation and statistics, with honest unevaluated answers where there is no closed form.

Parses a CSV reading log.

A reference central limit order book implemented with Redis data structures, a Lua matching script, and built-in market ticker snapshots.

A collection of finance algorithms related to annuities.