Avoid common Ruby and Rails antipatterns that degrade maintainability and performance. Use when writing new code, reviewing PRs, or refactoring existing code in Doorkeeper.
Maintain code health and architecture standards when implementing features or refactoring Doorkeeper. Use when adding new classes, modules, configuration options, or when a file is growing large or complex.
Ensure gems are safe, necessary, and properly constrained when adding, updating, or reviewing dependencies in Doorkeeper. Use when modifying Gemfile, doorkeeper.gemspec, or gemfiles/*.gemfile.
Verify OAuth protocol implementations stay aligned with relevant RFCs. Use when adding or modifying grant flows, token responses, error formats, redirect behavior, introspection, revocation, PKCE, or metadata endpoints in Doorkeeper.
Verify that code changes do not introduce OAuth security vulnerabilities. Use when modifying token handling, client authentication, scope validation, redirect URI checks, secret comparison, or grant flows in Doorkeeper.
Write correct and complete RSpec tests for Doorkeeper. Use when adding specs for new features, writing regression tests for bug fixes, or reviewing test coverage for a change.