A layer of abstraction on top of Ripper for handling Abstract Syntax Trees in Ruby.

A MLIR dialect for ruby

Moult sheds dead code. `moult hotspots` ranks files by a complexity x churn score (Prism-parsed ABC complexity per method x per-file git churn); `moult deadcode` lists confidence-graded unused-method and unused-constant candidates over a rubydex definition graph, with Rails entrypoint awareness. Every finding carries a confidence and its reasons, never a claim of certain death.

Necropsy combines static call-graph reachability, optional dynamic evidence, and CI guardrails for Ruby dead-code detection.

Configure Minitest with common plugins and options to make it even nicer to use.

A production-ready AI agent platform: multi-provider (Ollama, OpenAI, Anthropic), typed tool system with permissions, three-tier memory, structured observability, loop detection, plugin architecture, interactive REPL, and project indexing. Works out of the box with local Ollama models; drop in OpenAI or Anthropic keys to upgrade.

Optimize is an ahead-of-time YARV bytecode optimizer for CRuby. It decodes iseq binaries into an in-memory IR, runs a configurable pipeline of passes (constant folding, inlining, dead-stash elimination, arithmetic reassociation, and others) under a narrow contract that the program's hot path respects, and re-emits an optimized iseq. Intended as a demo and an experiment, not a production compiler.

Augments ruby-lsp hover and go-to-definition with type information from sorbet/rbi/**/*.rbi. Drop it in your Gemfile and it just works.

A tool for writing manuals for Prawn and Prawn accessories

extend ruby prism

Prism-backed Ruby provider gem for the Structured Merge Ruby family.

Proscenium integration for Phlex

Inspects your Rails routes, controllers and schema to produce config/rails-api-docs.yml, then renders a Scalar-style three-column HTML page at public/api-docs.html. Includes a live preview mount at /rails/api-docs in development.

RailsContractSync produces and maintains a single committed openapi.yml for a Rails JSON API by combining static route/strong-params introspection with runtime observation of real responses via a Rack middleware. The result is idempotent, preserves hand-written documentation, and is serializer-agnostic.

A RBS files generator for activerecord gem

RBS inline annotator from RBS

Support auto generation of RBS by `Data.define` in rbs-inline syntax

Rubyists love metaprogramming. This tool bridges between RBS and metaprogramming, by allowing you to define a macro, which is then used to generate RBS definitions based on macro invocations."

Build reactive, real-time UI components that automatically re-render server-side when subscribed models change. Uses ViewComponent, Turbo Streams, and ActionCable to keep your UI in sync without writing custom JavaScript.

Rebundler makes your Gemfile look good.