Become a sponsor to Koichi ITO
OSS maintainer.
A member of RuboCop core team and the first place maintainer:
https://github.com/rubocop/rubocop/graphs/contributors
The head maintainer for key RuboCop extensions:
I also maintain the vscode-rubocop extension related to the RuboCop's built-in LSP server.
These are presentations on the core features I have worked on in RuboCop in recent years:
- Integration of Server Mode (RubyKaigi 2022)
- Integration of LSP and Prism (RubyKaigi 2024)
- Integration of Plugin, Ruby LSP Add-on, and Reusable AST (RubyKaigi 2025)
A member of MCP Steering Committee, primarily as a member of the Ruby SDK team.
A committer for these open source software products:
I spend a lot of my life every day developing open source software and triaging issues. Support through GitHub Sponsors is one of feedback ways to these activities. Thank you!
Featured work
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rubocop/rubocop
A Ruby static code analyzer and formatter, based on the community Ruby style guide.
Ruby 12,762 -
rubocop/rubocop-rails
A RuboCop extension focused on enforcing Rails best practices and coding conventions.
Ruby 841 -
modelcontextprotocol/modelcontextprotocol
Specification and documentation for the Model Context Protocol
TypeScript 5,259 -
modelcontextprotocol/ruby-sdk
The official Ruby SDK for the Model Context Protocol. Maintained in collaboration with Shopify.
Ruby 401 -
bblimke/webmock
Library for stubbing and setting expectations on HTTP requests in Ruby.
Ruby 4,023 -
tmm1/test-queue
parallel test runner for CI environments
Ruby 577