See how state flows through your Flutter app

Bryony draws your providers, Blocs, models, controllers and stores, and the widgets that use them, as one interactive graph inside VS Code. Start debugging and it comes alive.

Install for VS Code See what it does

Riverpod Bloc & Cubit Provider GetX MobX

The Bryony graph showing Riverpod providers, a Bloc, Provider models, GetX controllers and MobX stores connected to widgets

Answers, not guesswork

What does this provider depend on? Who rebuilds when it changes? Why does Get.find throw here? Bryony shows you, with no code changes and no extra window.

Five libraries, one graph

Riverpod, Bloc and Cubit, Provider, GetX and MobX side by side. Perfect for apps mid-migration.

Trace anything

Click a node to light up everything upstream and downstream. Double-click to jump straight to the code.

Catch bugs early

Cycles, missing providers, unregistered controllers and more show up in the Problems panel as you type.

Live while you debug

One command adds a debug-only observer. Nodes pulse with update counts, the latest value and a timeline.

Every library, in detail

Each node knows its kind. Blocs show which events produce which states, GetX controllers list their Rx fields and workers, and MobX stores list observables, computeds and actions.

A Bloc with its event handlers, emitted states and live updates — Bloc events to states, with live updates

A GetX controller with its reactive fields and workers — GetX controllers, registrations, Rx fields and workers

A MobX store with its observables, computeds and actions — MobX stores and the widgets that observe them

Bryony findings in the VS Code sidebar, CodeLens and Problems panel — Sidebar, CodeLens and the Problems panel

Findings that matter

Problems that usually surface only at runtime, flagged in the editor.

Dependency cycles between providers
Bloc events that are never handled
.family providers that are never disposed
Provider models that nobody provides
Models created inside .value(...)
Get.find on a controller nothing registers
MobX stores used without an Observer
ref.read while building, and state nothing reads

Up and running in a minute

Works on Windows, macOS and Linux with VS Code 1.85 or later. Your code never leaves your machine.

Install Bryony from the Visual Studio Marketplace.

Open a Flutter project. A short tour shows you around.

Press Ctrl+Alt+G (Cmd+Alt+G on macOS) to open the graph.

Run “Bryony: Set Up Live Mode”, then start debugging.

Make your app's state visible

Free to install. No setup, no code changes.

Install for VS Code