Curlex

The API client that stays on your machine.

A fast, local-first API client for macOS and Windows. No cloud account, no telemetry — just a powerful desktop tool for building, testing and documenting APIs.

Visit curlex.app macOS Windows

Curlex request builder with collections, query params and a JSON response

Desktop

Swipe to see more →

Curlex request builder with a syntax-highlighted response panel

Curlex collections sidebar with the environment switcher

About

Why Curlex

Curlex is for developers who want a capable API client without signing in to anything. Build requests, organise them into collections, script and test them, and run whole collections, all from a native desktop app.

Everything is stored locally. Passwords and tokens live in your operating system's keychain, and if you want backup or sharing, Curlex syncs to a private GitHub repository you control.

Local-first

All your data is stored on your machine. No account and no internet connection required.

Secure credentials

Passwords, tokens and Vault secrets go in the OS keychain, never on disk in plain text.

Collections and environments

Nested folders, workspaces, and variable sets you can switch between with one click.

Scripts and tests

Pre-request and test scripts in JavaScript, with a Postman-compatible API.

Collection runner

Run entire collections with retries, delays, data files and PDF reports.

Import from anywhere

Bring requests in from cURL, OpenAPI or Postman, and sync everything to GitHub.

Privacy

Privacy policy

No account, no telemetry, no usage tracking.