# REST API Client Tester

> 🚀 A Postman‑like API client that works on Firefox desktop & Android

Canonical page: [https://chrome-stats.com/d/api](https://chrome-stats.com/d/api)

## Overview

- **ID:** `api`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** onyxwizard
- **Category:** web-development
- **Daily users:** 95
- **Weekly downloads:** 13
- **Version:** 1.0
- **Last updated:** 2026-02-20
- **First published:** 2026-02-17
- **Size:** 44 KB
- **Data as of:** 2026-09-06
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/api/)
- **Website:** [https://github.com/onyxwizard/api-client](https://github.com/onyxwizard/api-client)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/api/privacy/](https://addons.mozilla.org/firefox/addon/api/privacy/)

## Description

🔌 <strong>Send HTTP requests directly from your browser.</strong> Enter a URL, choose a method (GET, POST, PUT, DELETE, etc.), add custom headers, and include a request body.

✨ <strong>View formatted JSON responses</strong> with beautiful syntax highlighting. Switch between raw and pretty‑printed views with one click.

🛡️ <strong>Your privacy matters.</strong> All data stays on your device – no external servers, no tracking, no analytics.

📱 <strong>Works everywhere.</strong> Fully functional on both Firefox desktop and Android. Perfect for developers testing APIs, debugging endpoints, or exploring web services on the go.

🔮 <strong>Coming soon:</strong> Save examples, request history, and environment variables.

## Rankings

- #11,993 — Overall
- #19 — rest
- #164 — environment
- #185 — desktop
- #240 — android

## Permissions and access

### Permissions

- `tabs`

### Host permissions

- `<all_urls>`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/api)