Validate and coerce user input against defined structure.

The Git Extension for online judges (Codeforces, etc...)

Abstracts common functionality used in the `./go` scripts of several 18F projects, and provides a `./go` script generator for new projects.

Custom Ruby on Rails form builder that generates GOV.UK elements styled markup for form inputs, including error validation messages.

A Ruby implementation of Facebook's yet-to-be-released GraphQL specification.

Grape resources provides the initial scaffolding for a model in a Grape api object, this gem in inspired by inherited-resources gem, and aims to solve this need inside a grape API.

grape-transformations your entities from your models and also organizes and lets you use multiple entities per model

Kaminari based GraphQL pagination

Define global ids, connections and mutations to use GraphQL and Relay with a Ruby server.

A Searchkick plugin for graphql-ruby allowing you to use searchkick with the connection type

A Command Line Interface for consuming the Hackpad REST API.

Hashformer provides a simple, Ruby Hash-based way of transforming data from one format to another. It's vaguely like XSLT, but way less complicated and way more Ruby.

Performs pruning or one-level promotion of Hash attributes (typically labeled "private:"), and deep merges and joins of Hash objects. Works on Array objects containing Hash objects as well.

Take rails constants' loading under control

Ruby gem to support using the Repository pattern for read-through, write-behind caching using POROs

Core component of the Hive CI runner

Signs and validates HTTP requests based on a shared-secret HMAC signature

Contributed Hobbit extensions

Rails validator for validating format of czech identification number = IC

IPAddress2 is a Ruby library designed to make manipulation of IPv4 and IPv6 addresses both powerful and simple. It maintains a layer of compatibility with Ruby's own IPAddr, while addressing many of its issues.