I Built Fast API, but for Flutter/Dart & AI

A developer has released fast_crud_api, an open-source Dart and Flutter package that provides a lightweight, customizable CRUD API server built on the shelf middleware library. The package exposes /create, /read, /update, and /delete endpoints, which the developer says can give AI agents a pathway to control specific app functionality, such as managing notes in a Flutter app. It also supports custom routes for developers who want to skip the built-in CRUD scaffolding.

One of my favorite Python Packages is fastapi . I love how you can build an API server very quickly with minimal code. Then, to top it off, you can use its built-in Swagger UI to test your API. To my knowledge, Flutter/Dart has no package that does this... I will build it myself... You got me It was really to connect AI Agents to my Flutter applications- why, of course I did not build this package from the ground up; I had some help Introducing shelf , a web-server middleware package for Dart. I used shelf to create a Flutter package named fast crud api . fast crud api is a lightweight, simple, and customizable CRUD API Server in Dart. CRUD is an acronym for Create, Read, Update, and Delete, representing the four fundamental operations for managing persistent data in software applications and databases. I built CRUD into the package because it creates a pathway for an AI Agent to control specific app functionality. With four endpoints /create , /read , /update , and /delete . For example, if I created a notes app in Flutter. With fast crud api , I could connect an AI Agent to create, read, update, and delete notes. Effectively giving the AI Agent a new skill that it can use. Likewise, you could leave the CRUD out of it and create a custom API instead APIServer is the main implementation and has the following parameters: class APIServer { final String? apiName; final Future<Response Function Request ? create; final Future<Response Function Request ? read; final Future<Response Function Request ? update; final Future<Response Function Request ? delete; final int? port; final int? version; final List<CustomRoute ? routes; final bool? noCRUD; final bool? logger; APIServer { this.create, this.read, this.update, this.delete, this.port, this.version, this.apiName, this.routes, this.noCRUD, this.logger, } ; } start that creates and starts the API server. Now let's add fast crud api to your Flutter or Dart project. fast crud api to your Flutter/Dart app: shelf to your pubspec.yaml file: dependencies: shelf: any fast crud api: git: url: https://github.com/DylanScottMickelson/fast crud api.git Now, run flutter pub get or dart pub get in your terminal/command prompt to install the package and its dependencies. Add this example code inside your main.dart file: import 'package:fast crud api/fast crud api.dart'; import 'package:shelf/shelf.dart'; void main async { /// Define your create, read, update, and delete functions here... Future<Response createFunction Request request async { return Response.ok "Created " ; } Future<Response readFunction Request request async { return Response.ok "Read " ; } Future<Response updateFunction Request request async { return Response.ok "Updated " ; } Future<Response deleteFunction Request request async { return Response.ok "Deleted " ; } /// Create API Server Implementation final apiServer = APIServer create: request = createFunction request , read: request = readFunction request , update: request = updateFunction request , delete: request = deleteFunction request , port: 6969, version: 1, apiName: "My API", noCRUD: false, logger: true, ; ///Start API Server await apiServer.start ; } import 'package:fast crud api/custom route.dart'; import 'package:fast crud api/fast crud api.dart'; import 'package:shelf/shelf.dart'; void main async { final handler = Response.notFound; /// Define your create, read, update, and delete functions here... Future<Response createFunction Request request { return Response.ok "Created " ; } Future<Response readFunction Request request { return Response.ok "Read " ; } Future<Response updateFunction Request request { return Response.ok "Updated " ; } Future<Response deleteFunction Request request { return Response.ok "Deleted " ; } /// Define your custom endpoints here... final customRoute1 = CustomRoute endpoint: "users", method: "GET", handler: request = Response.ok "Users Read " , ; final apiServer = APIServer create: request = createFunction request , read: request = readFunction request , update: request = updateFunction request , delete: request = deleteFunction request , port: 6969, version: 1, apiName: "My API", noCRUD: false, logger: true, routes: customRoute1 , ; await apiServer.start ; } import 'dart:convert'; import 'package:fast crud api/custom route.dart'; import 'package:fast crud api/fast crud api.dart'; import 'package:shelf/shelf.dart'; void main async { /// Define your custom endpoints here... final customRoute1 = CustomRoute endpoint: "users", method: "GET", handler: request = Response.ok jsonEncode {"users": } , ; final apiServer = APIServer port: 6969, version: 1, apiName: "My API", noCRUD: true, logger: true, routes: customRoute1 , ; await apiServer.start ; } Production: Go to http://ip address:chosen port/api/docs/ http://ip address:chosen port/api/docs/ Test: Go to http://127.0.0.1:6969/api/docs/ http://127.0.0.1:6969/api/docs/ Production: Test: Building an efficient backend layer for a modern application can often feel like solving multiple puzzles at once. But with fast crud api, that process is streamlined significantly. By leveraging Dart's power and the shelf package, fast crud api provides developers with a lightweight, and customizable API server. The key takeaway isn't just how to set up an API server in Flutter/Dart, but what you can do with it. Namely, giving AI Agents standardized, reliable endpoints Create, Read, Update, Delete that allow them to interact with your application data seamlessly. I hope this walkthrough was helpful Comment and let me know what you think, or dive into the code in the GitHub repo https://github.com/DylanScottMickelson/fast crud api . Happy coding 🧑💻