flutter

Adds interactive widget previews to the project using the previews.dart system. Use when creating new UI components or updating existing screens to ensure consistent design and interactive testing.

Applies Dart 3 pattern matching, switch expressions, and destructuring idiomatically to validate data schemas, handle algebraic data types, and decompose control flow. Use when refactoring complex if-else chains, parsing polymorphic JSON or API responses,…

Cross-platform file and directory path manipulation, segment splitting, extension extraction, and context conversion using `package:path` and `package:file`. Use when writing, inspecting, joining, splitting, or refactoring file paths, directory names, or…

Architectural patterns, entrypoint structure, exit codes, stream routing, and subprocess spawning for Dart command-line interface (CLI) applications. Use when building CLI tools, console utilities, scripts, argument parsing with `package:args` (ArgParser or…

How to inject external code examples into Dartdoc using the {@example} directive, and how to filter those files using #hide, #region, and #endregion tags.

Rules and formatting guidelines for writing Dart /// API documentation and doc comments. Use when documenting Dart code, writing doc comments for any Dart declaration (libraries, classes, methods, variables, etc.), or when instructed to follow the Effective…

Write and organize unit tests for functions, methods, and classes using `package:test`. Use when creating new logic or fixing bugs to ensure code remains correct and regression-free.

Reviews the specified code against the canonical API Design guidelines. Use this skill when the user asks for an API review or to check code against API design principles.

Run DeviceLab tests for Flutter PRs using LUCI's `led` CLI tool. Use when asked to run, launch, try, or deflake a post-submit or devicelab test against a PR using `led`.

Do not trigger automatically; only run when a user runs /bump-dart. Bump the minimum Dart SDK version constraint across the flutter/flutter repository, update dependency checksums, and run verification.

Generates the "what's new" release summary and diff file for changes in the Flutter engine (//engine/src/flutter) between two releases (e.g., 3.47 vs 3.44). When to use: - Only activate when explicitly asked by the user to generate what's new in the engine,…

Automate shepherding, checking status, updating branches, and landing open PRs or approved third-party contributor PRs in the flutter/flutter repository using the gh CLI. When to use: - When you need to check the status of open PRs or shepherded third-party…

How to land a formal cherry-pick of a merged PR for the flutter/flutter repo stable or beta channel. Only use for flutter/flutter landed pull requests. Only use when the cherry pick request is into "stable", "beta" or a branch that has the format with…

Performs a comprehensive, multi-step code review of pull requests or local code changes, using iterative refinement (generation, critique, synthesis) to ensure high-quality, actionable feedback. Use when you need to review code changes thoroughly.

Contains well-defined rules for creating natural, accurate, and readable writing. Use whenever authoring longer text, like analysis documents, PR or CL descriptions, or documentation.

Upgrades Flutter's Android SDK dependency to a new Android API version (or preview/canary release) in packages.txt, verifies CIPD tag uniqueness, and packages/uploads the binaries using create_cipd_packages.sh across macOS, Linux, and Windows. Use whenever a…

Primes understanding of repository architecture by navigating hierarchical ABOUT.md manifests.

Perform a pedantic, multi-perspective code review on the current diff or git changes against the styleguide and software engineering best practices.

Prepare and execute a new release for the flutter-intellij plugin, including updating dependencies, compatibility bounds, changelogs, and verification.

Add a new unit test for a class that currently lacks one or add a new test case to an existing test file, verifying improvement with Kover.

Ensure the plugin's custom UI components are accessible to users with screen readers and other assistive technologies.

Optimize plugin size and security by removing unused dependencies and updating outdated libraries.

Prevent UI freezes and ensure a responsive user experience by validating threading rules and migrating blocking calls off the Event Dispatch Thread (EDT).

Reduce technical debt and improve code quality by systematically resolving static analysis warnings.

Orchestrates the discovery, mapping, design, and implementation of a premium Flutter-based frontend for an Agent Development Kit (ADK) agent written with Python.

Guides the Architect subagent in discovering the Python library architecture, creating the architecture blueprint, and writing specifications.

Guides the Coder subagent in updating Dart library code to pass failing tests.

Orchestrates the 3-agent TDD workflow for Dart development by defining and invoking specialized subagents (Architect, Tester, Coder).

Guides the Tester subagent in writing failing Dart tests.

Rules, constraints, boundaries, and best practices for the multi-agent Python to Dart porting workflow.

Creates a shell script to build and run the Flutter web app on Cloud Shell using a local HTTP server.

Execute Step 3 of the GenUI Workshop, creating the empty Flutter project and adding dependencies.

Create, import, edit, or review posts for the official Flutter blog at flutter.dev/blog, including metadata, media, authors, and publication checks.

Extracts YouTube transcripts and generates professional Flutter showcase blog posts in Markdown format. Use when you need to create a technical marketing case study from a video success story.

Write or review clear, consistent, and accessible prose for Dart and Flutter developer documentation. Use for tutorials, API references, UI text, error messages, code comments, and terminology or style reviews.

Write or edit well-structured Markdown and MDX. Use for front matter, headings, lists, code fences, links, tables, other Markdown mechanics, and site-specific extensions. Pair with the write-technical-docs skill when changing prose.

Write, review, or refactor correct, idiomatic Dart code. Use for Dart source, packages, snippets, tests, public APIs, documentation examples, and modern language features. Pair with the write-flutter skill for Flutter-specific concerns.

Write, review, or refactor idiomatic Flutter code. Use for widgets, state and architecture, lifecycle, layout, theming, accessibility, performance, and tests. Apply alongside the write-dart skill for Dart guidance.

Update the whats-new page and archive old entries with changes to the website since the previous release.

Add or update a dart_mappable data model in lib/src/models/content/, including adding format validation, regenerating code, and adding tests. Use when adding a new content type or modifying an existing model's fields.

Use when migrating packages/material_ui components to Material 3 Expressive, including generated defaults, component theme opt-ins, tests, examples, and release notes.

Executes the required pre-push steps for the flutter/packages repository. Call this tool immediately whenever the user asks to push, asks if the user/you are ready to push, or wants to validate their local changes are ready to become a pull request.

Run this skill to check if the repository is ready for new work. Use this skill whenever the user asks to "check readiness", "see if we are ready to start work", or when starting a new task in the camera_android_camerax package.

Run evaluations for one, multiple, or all skills using the agent orchestration framework. Make sure to use this skill whenever the user asks to run evals, test a skill's performance, run benchmarks, or compare baseline versus with-skill execution.

Write and organize unit tests for functions, methods, and classes using `package:test`. Use when creating new logic or fixing bugs to ensure code remains correct and regression-free.

Collect coverage using the coverage packge and create an LCOV report

Define and generate mock objects for external dependencies using `package:mockito` and `build_runner`. Use when unit testing classes that depend on complex external services like APIs or databases.

Execute `dart analyze` to identify warnings and errors, and use `dart fix --apply` to automatically resolve mechanical lint issues. Use during development to ensure code quality and before committing changes.

Find and close obsolete, stale, or not reproducible issues in the flutter/devtools repository.

Guidelines and step-by-step workflow for debugging DevTools extensions locally, including stub mode, fixed-port launching, browser auto-opening, URL query parameters, target app connection, and human-in-the-loop interaction. Use when debugging or testing…

DevTools repository-specific PR review workflow enforcing DevTools style guidelines and common review patterns. Use when reviewing pull requests in the flutter/devtools repository.

General workflow for fetching, inspecting, reviewing GitHub Pull Requests using the gh CLI, drafting user-aligned review comments, and securing approval before posting. Use when asked to review a GitHub PR or pull request.

Use when documenting changes in CHANGELOG.md files for devtools_shared, devtools_app_shared, or devtools_extensions.

Guides updating dependency versions in published packages to avoid mono-repo resolution failures.

Adds copyright headers to files based on file type. Use when creating new files or when asked to verify copyright headers.

Adds user-facing change descriptions to DevTools release notes. Use when documenting improvements, fixes, or new features in the NEXT_RELEASE_NOTES.md file.

Reviews open automated dependency pull requests in the Dart (flutter/dart-intellij-third-party) and Flutter (flutter/flutter-intellij) IntelliJ plugin repositories. Covers Dependabot version bumps and bot-authored Flutter SDK rolls. Lists each PR with its…

Advance the Dart IntelliJ plugin's VM Service Java drivers by exactly one protocol version through an LLM-authored, user-reviewed, test-first workflow. Use to explain the next revision, add red tests, decide whether SDK-backed integration coverage is…

Copy JetBrains LSP sources into the Dart plugin and patch them to prevent conflicts and ensure proper configuration.

Guide for converting legacy Dart Analysis Server (DAS) feature implementations to JetBrains LSP in the Dart IntelliJ plugin.

Perform a pedantic, multi-perspective code review on the current diff or git changes against the styleguide and software engineering best practices.

Fetches a Pull Request from either the dart-intellij-third-party or flutter-intellij repository and conceptually ports its changes to the other repository.

Investigates a GitHub issue reporting a regression, analyzes recent commits, and identifies possible root cause culprits. Use this when the user asks to find the cause of a regression or bug from an issue.

Guidelines for implementing and reviewing new Dart language features, parsing logic, and grammar modifications.

Mandatory checks to run before completing any task that touches md files or dart code in this repository.

Instructions for adding a new validation rule and CLI flag to dart_skills_lint. Use this skill when asked to create a new rule that validates aspects of skills (like frontmatter metadata).

How to integrate, update, and configure the dart_skills_lint validation tool within a repository. Make sure to use this skill whenever the user asks to update dart_skills_lint, configure skills validation tests, fix skills linter dependency drifts, verify…

Development helper for the GenUI repository. Use this skill when the user asks about GenUI workflows, running tests, creating components, finding A2UI or Dart references, or adhering to repository standards.

Use this skill when the user asks to create a new CatalogItem, data class, and/or widget class based on a JSON Schema definition in an application that uses Flutter's `genui` package.

Use this skill when the user asks to integrate the genui package and get a simple conversation going with Firebase AI Logic.