API Workbench — Free Browser HTTP Client with cURL Import

Introduction

API Workbench is a lightweight, privacy-first HTTP client that runs entirely in your browser. Build requests, import cURL, organize collections, switch environments, and inspect JSON responses — all stored locally in IndexedDB.

Step-by-step

1. Enter a URL or paste a cURL command (Import cURL).
2. Pick a method, set query params, headers, auth, and body.
3. Select an environment (Development / Staging / Production).
4. Press Ctrl+Enter (⌘+Enter) to send and inspect the response.
5. Save the request into a collection or replay it from history.

Worked example

Import `curl https://httpbin.org/get -H "Accept: application/json"`, send the request, and inspect pretty-printed JSON with timing and size metrics.

Use cases

• Quick REST API smoke tests without installing desktop apps
• Paste production cURL snippets and re-run them with env variables
• Organize Authentication, User, and Payment collections with folders
• Generate fetch, Axios, Python, Go, PHP, and Java client snippets

Frequently asked questions