Flutter Deprecations MCP Server
About
# Flutter Deprecations MCP Server This MCP server tracks Flutter API deprecations and provides tools to check code for deprecated APIs and suggest replacements. ## Project Structure ``` flutter-deprecations-server/ ├── cmd/ │ └── server/ # Main application entry point │ └── main.go ├── internal/ # Private application…
Explore
- Source-based deprecation tracking: Directly scans Flutter's GitHub source code for @Deprecated annotations
- Local caching: Stores deprecations locally with 24-hour cache duration
- Code analysis: Analyzes Flutter code snippets for deprecated APIs
- Replacement suggestions: Provides modern alternatives for deprecated APIs
- Comprehensive scanning: Scans key Flutter directories (widgets, material, cupertino, services, etc.)
- Version checking: Gets latest Flutter version using Flutter CLI (most reliable) with GitHub API fallback
- Multi-platform support: Checks FVM and Docker image availability
- Command-line cache management: Manual cache updates and clearing with progress reporting
- Short command options: Support for both long and short command flags
- Rate limit handling: Graceful handling of GitHub API rate limits with helpful error messages
- Verbose logging: Detailed logging with -vvv flag for troubleshooting
make deps
Add to your MCP configuration (e.g., mcp.json):
{
"mcpServers": {
"flutter-deprecations": {
"command": "/path/to/flutter-deprecations-server/bin/flutter-deprecations-server",
"args": [],
"env": {}
}
}
}
Ask your AI assistant:
- "Check this Flutter code for deprecations: Color.red.withOpacity(0.5)"
- "List all Flutter deprecations"
- "What should I use instead of RaisedButton?"
- "What's the latest Flutter version and is it available in FVM and Docker?"
- "Check Flutter version info"
The server supports several command-line options for cache management:
```bash
This MCP server tracks Flutter API deprecations and provides tools to check code for deprecated APIs and suggest replacements.
Project Structure
flutter-deprecations-server/
├── cmd/
│ └── server/ # Main application entry point
│ └── main.go
├── internal/ # Private application code
│ ├── handlers/ # MCP tool handlers
│ │ ├── mcp_handlers.go
│ │ ├── mcp_handlers_test.go
│ │ └── testdata/
│ ├── models/ # Data structures
│ │ └── flutter.go
│ └── services/ # Business logic
│ ├── cache.go
│ ├── cache_test.go
│ ├── deprecations.go
│ ├── deprecations_test.go
│ ├── flutter_api.go
│ ├── flutter_api_test.go
│ ├── flutter_version.go
│ ├── interfaces.go
│ ├── version_info.go
│ ├── version_info_test.go
│ └── testdata/
├── pkg/ # Public libraries
│ └── config/ # Configuration constants
│ └── config.go
├── bin/ # Compiled binaries
├── Makefile # Build automation
├── go.mod # Go module definition
├── go.sum # Dependency checksums
└── README.md
Features
- Source-based deprecation tracking: Directly scans Flutter's GitHub source code for @Deprecated annotations
- Local caching: Stores deprecations locally with 24-hour cache duration
- Code analysis: Analyzes Flutter code snippets for deprecated APIs
- Replacement suggestions: Provides modern alternatives for deprecated APIs
- Comprehensive scanning: Scans key Flutter directories (widgets, material, cupertino, services, etc.)
- Version checking: Gets latest Flutter version using Flutter CLI (most reliable) with GitHub API fallback
- Multi-platform support: Checks FVM and Docker image availability
- Command-line cache management: Manual cache updates and clearing with progress reporting
- Short command options: Support for both long and short command flags
- Rate limit handling: Graceful handling of GitHub API rate limits with helpful error messages
- Verbose logging: Detailed logging with -vvv flag for troubleshooting
MCP Tools
1. check_flutter_deprecations
Analyzes provided Flutter code for deprecated APIs and suggests replacements.
Parameters:
- code (string): Flutter code snippet to analyze
Example:
Color.red.withOpacity(0.5) // Will suggest Color.red.withValues(alpha: 0.5)
2. list_flutter_deprecations
Lists all known Flutter deprecations from the cache.
Parameters: None
Returns: Complete list of deprecations with replacements and version information.
3. check_flutter_version_info
Gets the latest stable Flutter version and checks availability across different tools and platforms.
Parameters: None
Returns:
- Latest stable Flutter version (using Flutter CLI when available, GitHub API fallback)
- Flutter CLI installation status and channel information
- FVM installation status and version availability
- Docker image availability for instrumentisto/flutter and ghcr.io/cirruslabs/flutter
- Usage examples and installation commands
Known Deprecations
The server includes built-in patterns for common deprecations:
- Color.withOpacity() → Color.withValues(alpha:)
- RaisedButton → ElevatedButton
- FlatButton → TextButton
- OutlineButton → OutlinedButton
- Scaffold.of(context).showSnackBar → ScaffoldMessenger.of(context).showSnackBar
Installation
Using Makefile (Recommended)
```bash
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