Add MCP tool serving to any Rails app. Write @rbs type annotations with predicate tags (@requires, @feature, or custom) and the gem compiles per-user JSON Schema automatically — filtering fields by permissions, feature flags, and plan tiers at request time.

The Model Context Protocol is an open standard that enables developers to build secure, two-way connections between their data sources and AI-powered tools.

SHM Chat app using gRPC and Ricart-Agrawala algorithm

I created this gem to convert Mercosur plates to Brazilian plates and vice versa.

Methodist - a gem for Ruby on Rails created to stop chaos in your business logic. This gem adds generators to your rails application using some patterns: interactor, builder, observer and client. Just use `rails g <pattern> <new_class_name>`. Docs: https://github.com/QNester/methodist/wiki

Method-Ray is a static analysis tool that checks the callability of methods in Ruby code.

SurrealDB client for Ruby (HTTP and WebSocket)

A small, dependency-free Ruby client for creating and cancelling Nodex Pay payments and verifying Payment Result callbacks.

Custom OmniAuth strategy for OpenID Federation providers supporting signed request objects (RFC 9101), ID token encryption/decryption, client assertion (private_key_jwt), and OpenID Federation entity statements. Framework-agnostic and works with Rails, Sinatra, Rack, and other Rack-compatible frameworks.

An OmniAuth strategy for implementing Sign-in with Slack using OpenID Connect

Read environment variables from 1Password fields (dotenv/json/yaml format) or all fields using the op CLI or 1Password Connect Server API. Export local .env files back to 1Password.

Scalable infrastructure management with Ruby DSL compilation to Terraform JSON. Features template-level state isolation and automation-first design.

A utility gem for normalizing parameters in Rails applications.

A small Ruby library for constructing parsers in the PEG (Parsing Expression Grammar) fashion. Parsanol provides Parslet-compatible API with additional features including static frozen parsers and dynamic parsers, with optional Rust native extension for improved performance.

Runtime maintenance for PostgreSQL declarative partitions — archive / current / future zones, heat-driven splits, mandatory default drain, hot-switch migrations, and strategy templates.

Parallel tests, coverage (SimpleCov-compatible) formatters, fixtures/snapshots, assets & DB provisioning—zero runtime deps

Predicateable allows you to define predicate methods (like `admin?`) based on a method that returns a Symbol. Similar to Rails enums, with optional strict checking and prefix support.

Decompiling from Ruby to proto file.

Property based testing tool with RBS

Runtime type tracer for ruby