Yokai

What is Yokai?

Yokai is a simple, modular, and observable Go framework for building production-grade backend applications. It integrates robust Go libraries for HTTP/gRPC servers, configuration management, and observability, and handles boilerplate like dependency wiring and instrumentation.

How to use Yokai?

Get started by choosing one of Yokai's ready-to-use application templates (gRPC, HTTP, MCP, or worker). Follow the documentation at ankorstore.github.io/yokai to set up your project and use Yokai's dependency injection system to build your application logic.

Key features of Yokai

• Simple, modular, and observable Go framework
• Built-in logging, tracing, metrics, and health checks
• Extensible via official or custom modules
• Dependency injection system (based on Uber Fx)
• Supports gRPC, HTTP, MCP, and worker applications

Use cases of Yokai

• Building production-grade Go backend applications
• Creating microservices with built-in observability
• Developing gRPC or HTTP APIs with minimal boilerplate
• Scaffolding MCP (Model Context Protocol) servers
• Worker applications with configuration and dependency injection

FAQ from Yokai

What Go version is required?

Yokai requires Go version 1.20 or higher.

Is Yokai open source?

Yes, Yokai is released under the MIT license.

Where can I find documentation and examples?

Full documentation is available at ankorstore.github.io/yokai, and demo applications are in the showroom repository.

Does Yokai support MCP (Model Context Protocol) applications?

Yes, Yokai provides a dedicated application template for building MCP servers.

Which key libraries does Yokai use?

It uses Echo for HTTP, gRPC-go for gRPC, Viper for configuration, OpenTelemetry for observability, and Fx for dependency injection.