The Go Framework for microservices

Kratos is a web application framework with expressive, elegant syntax. We've already laid the foundation.

Quick Start

Kratos Framework
Blades Agent

func main() {
    httpSrv := http.NewServer(
        http.Address(":8000"),
    )
    grpcSrv := grpc.NewServer(
        grpc.Address(":9000"),
    )
    v1.RegisterGreeterServer(srv, greeter)
    v1.RegisterGreeterHTTPServer(srv, greeter)
    app := kratos.New(
        kratos.Name("kratos-app"),
        kratos.Version("v1.0.0"),
        kratos.Server(
            httpSrv,
            grpcSrv,
        ),
    )
    if err := app.Run(); err != nil {
        log.Fatal(err)
    }
}

func main() {
    agent := blades.NewAgent(
        "Basic Agent",
        blades.WithModel("gpt-5"),
        blades.WithProvider(openai.NewChatProvider()),
        blades.WithInstructions("You are a helpful assistant that provides detailed and accurate information."),
    )
    input := blades.UserMessage("What is the capital of France?"),
    runner := blades.NewRunner(agent)
    output, err := runner.Run(context.Background(), input)
    if err != nil {
        log.Fatal(err)
    }
    log.Println(output.Text())
}

Build your application

Build with Kratos framework

Get started with a production-ready starter powered by Kratos.

Learn Kratos Kratos Repo

Build with Blades agent

Build AI agents and apps using Blades modular agent framework.

Learn Blades Blades Repo

Features

Microservices

Build and deliver production-ready features fast with independently scalable and evolvable microservices architecture.

Specified API

Define consistent and type-safe interfaces using Protobuf, supporting both HTTP and gRPC communication out of the box.

Plug-able

Flexible middleware system supporting custom interceptors for logging, authentication, rate limiting, tracing, and more — enabling clean and reusable request pipelines.

Observability

Built-in tracing, metrics, and logging support help you gain full visibility into system performance and behavior.

Contributing Guide

Contribution

Thank you for contributing to the Kratos framework. Each contribution brings us one step closer to making Kratos even better.

Read the Contribution Guide