Yaak is a modern desktop API client designed to provide a fast, intuitive, and privacy-focused environment for interacting with APIs across multiple protocols. It supports a wide range of technologies including REST, GraphQL, gRPC, WebSocket, and Server-Sent Events, allowing developers to work with different types of APIs from a single unified interface. The application is built using Tauri, Rust, and React, which contributes to its lightweight footprint, high performance, and cross-platform compatibility. One of its core design principles is being offline-first, meaning that user data, requests, and secrets are stored locally without reliance on cloud services, enhancing both privacy and control. Yaak also emphasizes developer productivity by offering features such as dynamic request templating, debugging tools, and environment-based configuration management.
Features
- Multi-protocol support including REST, GraphQL, gRPC, WebSocket, and SSE
- Offline-first design with local data storage and no telemetry
- Dynamic request templating with variables and chaining
- Import compatibility with Postman, OpenAPI, Swagger, and Curl
- Secure authentication with OAuth2, JWT, and encrypted secrets
- Extensible plugin system and agent-friendly CLI