Open Source API Laboratory
Yasumu
Documentation
The comprehensive guide to the modern API laboratory.
Design, test, and debug your API workflows with confidence.
REST API
SMTP Testing
GraphQL
Explore the Documentation
Everything you need to master Yasumu, from basics to advanced concepts.
Getting Started
Install Yasumu and create your first workspace in minutes.
Read more
Workspaces
Understand how Yasumu organizes your API definitions.
Read more
Requests
Master HTTP request configuration and testing.
Read more
Environments
Manage variables and secrets across different contexts.
Read more
Scripting
Pre-request and post-response scripting with JavaScript.
Read more
SMTP Server
Catch-all email server for testing email workflows.
Read more
Echo Server
Built-in HTTP server for testing and debugging requests.
Read more
Command Line Interface
Execute YSL files from the terminal for CI/CD and automation.
Read more
Architecture
Deep dive into the Tauri + custom runtime architecture.
Read more
Need Help?
Found a bug or have a feature request? Let us know on GitHub.