Chasqui

A lightweight, open-source API client for developers who just want to test APIs without the bloat.

Built with Tauri, Rust, and Svelte. Fast, native, and doesn't phone home.

Why?

Postman got heavy. Insomnia went weird. I just wanted something simple to send HTTP requests without signing up for an account or waiting 10 seconds for the app to load.

Chasqui is that. Nothing more.

Features

• HTTP requests - GET, POST, PUT, PATCH, DELETE, etc.
• Request body - JSON, plain text, form-data, x-www-form-urlencoded
• Authentication - Bearer token, Basic auth, API key (header or query)
• Environments - Store variables and switch between dev/staging/prod
• Workspaces - Organize your projects separately
• Collections - Group requests into folders
• History - See what you sent and when
• Monaco editor - Syntax highlighting for JSON bodies
• Dark/Light mode - Easy on the eyes

Screenshot

Install

Download

Grab the latest release from the Releases page.

• macOS: .dmg or .app
• Windows: .msi or .exe
• Linux: .deb, .AppImage, or .rpm

Build from source

You'll need:

• Node.js 18+
• pnpm
• Rust

# Clone the repo
git clone https://github.com/YOUR_USERNAME/chasqui.git
cd chasqui

# Install dependencies
pnpm install

# Run in development
pnpm tauri dev

# Build for production
pnpm tauri build

The built app will be in src-tauri/target/release/bundle/.

Development

# Start dev server with hot reload
pnpm tauri dev

# Type check
pnpm check

# Build frontend only
pnpm build

Testing

# Run Rust integration tests (HTTP client)
pnpm test:rust

# Start echo server for manual testing
pnpm test:server
# Then open Chasqui and send requests to http://localhost:3456

The echo server returns all request details (headers, body, params) as JSON so you can verify everything is being sent correctly.

Tech Stack

• Frontend: SvelteKit 2, TypeScript, Monaco Editor
• Backend: Tauri 2, Rust
• HTTP: reqwest
• Storage: tauri-plugin-store (local JSON files)

Roadmap

Things I might add if there's interest:

• Import/export collections (Postman format)
• GraphQL support
• WebSocket testing
• Request scripting (pre-request, tests)
• Cookies management
• Proxy settings
• Code generation (curl, fetch, etc.)

Contributing

PRs welcome. Keep it simple.

License

MIT

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"Chasqui" were the messengers of the Inca Empire, known for their speed and reliability.