Flutter Inspector MCP Server

<div align="center"> # MCP Server + Flutter MCP Toolkit _For AI-Powered Development_ [](https://opensource.org/licenses/MIT) [](https://flutter.dev) [](https://smithery.ai/server/@Arenukvern/mcp_flutter) [](https://mseep.ai/app/03aa0f2d-4ef7-40ae-93de-c7b87e0ac32d) [](https://github.com/Arenukvern/mcp_flutter#contributors-) </div> <a href="https://glama.ai/mcp/servers/qnu3f0fa20"> <img width="380" height="200" src="https://glama.ai/mcp/servers/qnu3f0fa20/badge" alt="Flutter Inspector Server MCP server" /> </a> 🔍 Model Context Protocol (MCP) server that connects your Flutter apps with AI coding assistants like Cursor, Claude, Cline, Windsurf, RooCode or any other AI assistant that supports MCP server <!-- Media -->  <!-- End of Media --> ## 📖 Documentation - [Quick Start](QUICK_START.md) - [Configuration](CONFIGURATION.md) > [!NOTE] > There is official [MCP Server for Flutter from Flutter team](https://github.com/dart-lang/ai/tree/main/pkgs/dart_mcp_server) which exposes Dart tooling. > > The **main goal of this project** is to bring power of MCP server tools by creating them in Flutter app, using **dynamic MCP tools registration** . See how it works in [short YouTube video](https://www.youtube.com/watch?v=Qog3x2VcO98). See [Quick Start](QUICK_START.md) for more details. See [original motivation](https://github.com/Arenukvern/mcp_flutter/blob/main/CHANGELOG.md#210) behind the idea. > > Also, secondary goal is to stabilize and polish tools which are useful in development (so it would be specifically targeted for AI Assistants, for example: it will return not only the errors, but prompt for AI how to work with that error) [see more in MCP_RPC_DESCRIPTION.md](MCP_RPC_DESCRIPTION.md) > > Please share your feedback, ideas and suggestions in issues! > > Hope it will be useful for you, > > Have a nice day! ## 🎉 v2.3.0 released! 🎉 - feature: Added support for saving captured screenshots as files instead of returning them as base64 data, with automatic cleanup of old screenshots. Use (`--save-images`) flag to enable it. - fix: Fixed various issues with dynamic registry, made logs level error by default. - perf: v0.2.3 - added more checks for [MCPCallEntry.resourceUri] for MCPToolkit package (MCPToolkit updated to v0.2.3) - disabled resources support by default for RooCode and Cline setups (for unknown reason it doesn't work) - added section for RooCode in QUICK_START.md - Huge thank you to [cosystudio](https://github.com/cosystudio) for raising, researching and (describing issues)[https://github.com/Arenukvern/mcp_flutter/issues/53] with RooCode MCP server. **Major Changes in v2.2.0:** - **Dart-based MCP Server now is the main server**: Typescript server removed, and `mcp_server_dart` is the main server. - **Dynamic Tools Registration**: Flutter apps can now register custom tools at the MCP server. See how it works in [short YouTube video](https://www.youtube.com/watch?v=Qog3x2VcO98). See [Dynamic Tools Registration Docs](https://github.com/Arenukvern/mcp_flutter/blob/main/QUICK_START.md#dynamic-tools-registration) for more details. See more details in [CHANGELOG.md](CHANGELOG.md). ## ⚠️ WARNING Dump RPC methods (like `dump_render_tree`), may cause huge amount of tokens usage or overload context. Therefore now they are disabled by default, but can be enabled via `--dumps` flag. See more details about command line options in [mcp_server_dart README](mcp_server_dart/README.md). ## 🚀 Getting Started - (Experimental) You can try to install MCP server and configure it using your AI Agent. Use the following prompt: `Please install MCP server using this link: https://github.com/Arenukvern/mcp_flutter/blob/main/llm_install.md` - with Cursor: https://www.youtube.com/watch?v=pyDHaI81uts - with VSCode + Cline: use prompt `Please install MCP server using this link: https://github.com/Arenukvern/mcp_flutter/blob/main/llm_install.md` - Quick Start is available in [QUICK_START.md](QUICK_START.md) - Configuration options are available in [CONFIGURATION.md](CONFIGURATION.md) ## 🎯 AI Agent Tools ### Core Flutter Tools - `get_app_errors` [Resource|Tool] - Retrieves precise and condensed error information from your Flutter app **Usage**: - Uses only short description of the error. Should filter duplicate errors, to avoid flooding Agent context window with the same errors. - Uses Error Monitor to capture Dart VM errors. All errors captured in Flutter app, and then available by request from MCP server. **Tested on**: ✅ macOS, ✅ iOS **Not tested on**: 🚧 Android, 🤔 Windows, 🤔 Linux, ❌ Web [See issue](https://github.com/Arenukvern/mcp_flutter/issues/23) - `view_screenshot` [Resource|Tool] - Captures screenshots of the running application. **Configuration**: - Enable with `--images` flag - Will use PNG compression to optimize image size. - `get_view_details` [Resource|Tool] - size of screen, pixel ratio. May unlock ability for an Agent to use widget selection. Will return details about each view in the app. ### Dynamic Tools Registration 🆕 **Dynamic Registration Features:** Flutter apps can now register custom tools and resources at runtime. See how it works in [short YouTube video](https://www.youtube.com/watch?v=Qog3x2VcO98). See [Dynamic Tools Registration Docs](#dynamic-tools-registration-🆕) for more details. All tools default to using port 8181 if no port is specified. You can override this by providing a specific port number. 📚 Please see more in [MCP_RPC_DESCRIPTION](MCP_RPC_DESCRIPTION.md) ## 🔒 Security Generally, since you use MCP server to connect to Flutter app in Debug Mode, it should be safe to use. However, I still recommend to review how it works in [ARCHITECTURE.md](ARCHITECTURE.md), how it can be modified to improve security if needed. This MCP server is verified by [MseeP.ai](https://mseep.ai). [](https://mseep.ai/app/arenukvern-mcp-flutter) ## 🔧 Troubleshooting 1. **Connection Issues** - Ensure your Flutter app is running in debug mode - Verify the port matches in both Flutter app and MCP server - Check if the port is not being used by another process 2. **AI Tool Not Detecting Inspector** - Restart the AI tool after configuration changes - Verify the configuration JSON syntax - Check the tool's logs for connection errors 3. **Dynamic Tools Not Appearing** - Ensure `mcp_toolkit` package is properly initialized in your Flutter app - Check that tools are registered using `MCPToolkitBinding.instance.addEntries()` - Use `listClientToolsAndResources` to verify registration - Hot reload your Flutter app after adding new tools The Flutter MCP Server is registered with Smithery's registry, making it discoverable and usable by other AI tools through a standardized interface. ### Integration Architecture ``` ┌─────────────────┐ ┌───────────────────────┐ ┌─────────────────┐ │ │ │ Flutter App with │ │ │ │ Flutter App │<--->│ mcp_toolkit (VM Svc. │<--->│ MCP Server Dart │ │ (Debug Mode) │ │ Extensions + Dynamic │ │ │ │ │ │ Tool Registration) │ │ │ └─────────────────┘ └───────────────────────┘ └─────────────────┘ ``` ## 🤝 Contributing Contributions are welcome! Please feel free to submit pull requests or report issues on the [GitHub repository](https://github.com/Arenukvern/mcp_flutter). ## ✨ Contributors Huge thanks to all contributors for making this project better! <!-- https://allcontributors.org/docs/en/bot/usage --> <!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section --> <!-- prettier-ignore-start --> <!-- markdownlint-disable --> <table> <tbody> <tr> <td align="center" valign="top" width="14.28%"><a href="https://calclavia.com"><img src="https://avatars.githubusercontent.com/u/1828968?v=4?s=100" width="100px;" alt="Henry Mao"/><br />_{<b>Henry Mao</b>}</a><br /><a href="#infra-calclavia" title="Infrastructure (Hosting, Build-Tools, etc)">🚇</a></td> <td align="center" valign="top" width="14.28%"><a href="https://github.com/marwenbk"><img src="https://avatars.githubusercontent.com/u/18284646?v=4?s=100" width="100px;" alt="Marwen"/><br />_{<b>Marwen</b>}</a><br /><a href="#doc-marwenbk" title="Documentation">📖</a></td> <td align="center" valign="top" width="14.28%"><a href="http://eastagile.com"><img src="https://avatars.githubusercontent.com/u/2829939?v=4?s=100" width="100px;" alt="Lawrence Sinclair"/><br />_{<b>Lawrence Sinclair</b>}</a><br /><a href="#doc-lwsinclair" title="Documentation">📖</a> <a href="#security-lwsinclair" title="Security">🛡️</a></td> <td align="center" valign="top" width="14.28%"><a href="https://glama.ai"><img src="https://avatars.githubusercontent.com/u/108313943?v=4?s=100" width="100px;" alt="Frank Fiegel"/><br />_{<b>Frank Fiegel</b>}</a><br /><a href="#infra-punkpeye" title="Infrastructure (Hosting, Build-Tools, etc)">🚇</a></td> <td align="center" valign="top" width="14.28%"><a href="https://github.com/Harishwarrior"><img src="https://avatars.githubusercontent.com/u/38380040?v=4?s=100" width="100px;" alt="Harish Anbalagan"/><br />_{<b>Harish Anbalagan</b>}</a><br /><a href="#userTesting-Harishwarrior" title="User Testing">📓</a> <a href="#bug-Harishwarrior" title="Bug reports">🐛</a></td> <td align="center" valign="top" width="14.28%"><a href="https://github.com/torbenkeller"><img src="https://avatars.githubusercontent.com/u/33001558?v=4?s=100" width="100px;" alt="Torben Keller"/><br />_{<b>Torben Keller</b>}</a><br /><a href="#userTesting-torbenkeller" title="User Testing">📓</a> <a href="#bug-torbenkeller" title="Bug reports">🐛</a></td> <td align="center" valign="top" width="14.28%"><a href="https://github.com/rednikisfun"><img src="https://avatars.githubusercontent.com/u/53967674?v=4?s=100" width="100px;" alt="Isfun"/><br />_<b>Isfun</b></a><br /><a href="#userTesting-rednikisfun" title="User Testing">📓</a> <a href="#bug-rednikisfun" title="Bug reports">🐛</a> <a href="#research-rednikisfun" title="Research">🔬</a> <a href="#code-rednikisfun" title="Code">💻</a></td> </tr> <tr> <td align="center" valign="top" width="14.28%"><a href="https://github.com/cosystudio"><img src="https://avatars.githubusercontent.com/u/149987661?v=4?s=100" width="100px;" alt="Cosy Studio"/><br />_{<b>Cosy Studio</b>}</a><br /><a href="#userTesting-cosystudio" title="User Testing">📓</a> <a href="#bug-cosystudio" title="Bug reports">🐛</a> <a href="#research-cosystudio" title="Research">🔬</a></td> <td align="center" valign="top" width="14.28%"><a href="https://github.com/lukemmtt"><img src="https://avatars.githubusercontent.com/u/1598289?v=4?s=100" width="100px;" alt="Luke Memet"/><br />_{<b>Luke Memet</b>}</a><br /><a href="#userTesting-lukemmtt" title="User Testing">📓</a> <a href="#research-lukemmtt" title="Research">🔬</a> <a href="#maintenance-lukemmtt" title="Maintenance">🚧</a> <a href="#tutorial-lukemmtt" title="Tutorials">✅</a></td> </tr> </tbody> </table> <!-- markdownlint-restore --> <!-- prettier-ignore-end --> <!-- ALL-CONTRIBUTORS-LIST:END --> ## 📖 Learn More - [Flutter DevTools Documentation](https://docs.flutter.dev/development/tools/devtools/overview) - [Dart VM Service Protocol](https://github.com/dart-lang/sdk/blob/main/runtime/vm/service/service.md) - [Flutter DevTools RPC Constants (I guess and hope they are correct:))](https://github.com/flutter/devtools/tree/87f8016e2610c98c3e2eae8b1c823de068701dfd/packages/devtools_app/lib/src/shared/analytics/constants) ## Star History [](https://www.star-history.com/#Arenukvern/mcp_flutter&Date) ## 📄 License [MIT](LICENSE) - Feel free to use in your projects! --- _Flutter and Dart are trademarks of Google LLC._