LeanCode AI Plugins

Claude Code plugins for Flutter: the conventions we use in production, and tools that let Claude see your running app. From the team behind Patrol, Marionette MCP and advanced_forms.

Before and after

flutter-read-logs gives Claude the logs of your last flutter run. Same code, same model (Claude Sonnet 5), same question:

Tapping Cancel on the second booking does nothing. Why?

	Without the plugin	With /read-logs
Cause	Guessed from the code: "404/409/500, or a network hiccup"	Read from the run: 409 cancellation_window_closed, because the booking starts in under 24 hours
Fix	A generic "Failed to cancel booking." snackbar	Maps the 409 to the screen's error state, and suggests the server's reason: "Bookings can't be cancelled less than 24 hours before they start."
Tool calls	17	6
Cost	$0.50	$0.17

_{Quotes are from real runs on 2026-09-23: a small Flutter app on macOS, and a local API outside the app's repository. An integration test tapped Cancel, and /read-logs read that run's log file. Writing the log file takes one editor setting, and /read-logs walks you through it.}

Install

/plugin marketplace add leancodepl/ai-plugins
/plugin install flutter-read-logs@leancode-ai-plugins

Then run /reload-plugins. Each plugin installs on its own as <plugin-name>@leancode-ai-plugins, so take only the ones you agree with. The Discover tab in /plugin lists them all.

New here? Install lean-core and run /lean-core-usage. Every plugin in this repository has a /<plugin-name>-usage skill, such as /flutter-bloc-usage, that explains what it covers.

Team setup and the git URL

To have Claude Code offer the marketplace to everyone on a project, add it to the project's .claude/settings.json:

{
  "extraKnownMarketplaces": {
    "leancode-ai-plugins": {
      "source": {
        "source": "github",
        "repo": "leancodepl/ai-plugins"
      }
    }
  }
}

The git URL works as a source too:

/plugin marketplace add https://github.com/leancodepl/ai-plugins.git

See Discover and install plugins in the Claude Code docs.

Supported clients

Claude Code only.

Available plugins

Getting started

Plugin	Covers
lean-core	/lean-core-usage explains the marketplace; /lean-contribute walks you through a PR

Project foundations

Plugin	Covers
flutter-leancode-architecture	Project structure, error handling and logging; architecture review and feature scaffolding
flutter-di	provider-based dependency injection, page-root providers, GlobalProviders, async initialization
flutter-navigation	auto_route and go_router: typed routes, guards, route trees, deep links
flutter-analytics	Analytics IDs and page and tap tracking; scaffolds IDs and reviews coverage
flutter-localization	ARB files, POEditor, poe2arb and l10n(context)

State and data

Plugin	Covers
flutter-bloc	BLoC and Cubit conventions, state modeling, side effects with bloc_presentation, flutter_hooks
flutter-cubit-utils	QueryCubit, PaginatedQueryCubit and RequestCubit, with recipes for lists, details and actions
flutter-cqrs	CQRS contracts, repositories, cqrs.run and cqrs.get, CQRS-backed cubits
flutter-forms	advanced_forms controllers, sync, async and cross-field validation, submit handling

UI and verification

Plugin	Covers	Setup
flutter-ui	Design-system-driven UI, loading and error states, localized text, implementation checklists	None
flutter-patrol	Writing Patrol E2E tests, test architecture and key conventions	Patrol CLI and Patrol MCP
flutter-marionette	Driving a live debug app through Marionette MCP to explore, smoke-check and debug UI	Marionette MCP and an app-side binding
flutter-read-logs	/read-logs gives Claude the logs of your last flutter run	One editor setting

flutter-forms and flutter-patrol install straight from the repositories of the packages they cover, so they stay in step with each release. Each plugin's README.md covers its setup.

Judgment and review

Plugin	Covers	Setup
lean-jev	Hands a judgment call to Jev, TypeSafe's System One model, and frames it the way Jev needs it framed: typed questions, numbers instead of prose, cheap enough to judge every item in a list	A TypeSafe API key

Contributing

Fixes and new Flutter plugins are welcome. CI runs every check, so you need nothing installed locally. CONTRIBUTING.md has the steps, and AGENTS.md has the plugin conventions.

License

MIT