Open source. Built in Rust.

The fast API client for focused developers.

Test requests, inspect responses and debug APIs in a lightweight desktop client built for speed and clarity.

Available on all platforms

Erynthis API client showing an HTTP request and response
Introducing Erynthis →

API clients should feel immediate. Too many development tools trade simple workflows for heavy interfaces and unnecessary overhead.

Erynthis is a lightweight client built in Rust. It keeps request testing, environments and response inspection clear, fast and close to your local workflow.

Everything you need to keep APIs moving.

One focused workspace for the request and response cycle, without the weight of a browser runtime.

Erynthis application interface

Fast request testing. Move from request to response without waiting on a heavy runtime.

Erynthis application interface

Environments that stay local. Organize variables and collections while keeping development data on your machine.

Erynthis application interface

Clear response inspection. Read status, headers and payloads in a focused workspace built for debugging.

Less waiting. More building.

Download Erynthis and bring speed, clarity and control back to your API workflow.

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Available on all platforms