# API & HTTP Client — MCP, API & WebSocket Debugger

> MCP, API & WebSocket Debugger (iPhone/iPad app by Thien An Studio LLC.)

- Source: https://appshunter.io/ios/app/api-and-http-client/id6799007428 (this page in markdown: same URL + `.md`)
- Developer: [Thien An Studio LLC](https://appshunter.io/developer/1874498983)
- Category: Developer Tools, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 17.6 · 38 MB
- Languages: American English
- Released: 2026-08-28
- Data updated: 2026-09-08
- User reviews in markdown: https://appshunter.io/ios/app/api-and-http-client/id6799007428/reviews.md

## What is API & HTTP Client?

This app is a powerful API Client and API Testing tool built for developers who need to send requests, inspect responses, and debug APIs anytime, anywhere. Whether you're working with REST APIs, GraphQL, WebSockets, or MCP (Model Context Protocol) servers, the app provides everything you need in one place.

Test APIs faster, troubleshoot issues efficiently, and analyze responses with an intuitive interface designed for both beginners and experienced developers.

- Key Features:

+ API Client & Request Testing

* Send HTTP and HTTPS requests using GET, POST, PUT, DELETE, PATCH, HEAD, and OPTIONS.
* Create and edit requests with an intuitive request editor.
* View detailed request and response information, including headers, body, status code, response time, payload size, SSL details, and more.
* Debug APIs without needing access to your desktop or terminal.

+ REST API, GraphQL & WebSocket Support

* Test and debug REST APIs with ease.
* Native GraphQL support with query editor, variables editor, and schema explorer.
* Connect to WebSocket servers for real-time communication and testing.

+ MCP (Model Context Protocol)

* Connect to remote MCP servers
* Browse available tools, prompts, and resources.
* Invoke MCP tools directly from the app.

+ JSON Viewer & Response Inspector

* Automatically format and highlight JSON, HTML, XML, and plain text responses.
* Easily inspect API responses for debugging and development.
* Filter response data using JSONPath and XPath expressions.

+ OpenAPI, Swagger & Postman

* Import and export Postman Collections and Environments.
* Sync collections with your Postman Cloud account.
* Support for OpenAPI and Swagger specifications.
* Browse API documentation directly inside the app.

+ Authentication

Supports multiple authentication methods, including:
* Basic Authentication
* Digest Authentication
* OAuth 1.0a
* OAuth 2.0
* JWT (JSON Web Token)
* Additional authentication schemes with secure credential storage.

+ Productivity

* Save reusable variables using Environments.
* Import and export collections through iCloud Drive, Dropbox, and other document providers.
* Automate API workflows with Apple Shortcuts.

Whether you're a backend developer, mobile developer, frontend engineer, QA tester, or DevOps engineer, this app provides a complete solution for API testing, API debugging, REST API development, GraphQL, WebSocket, MCP, and OpenAPI workflows—all from your mobile device.


## Version history (last 1 release)

### 1.0.0 — 2026-08-28

No release notes.

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All apps by Thien An Studio LLC: https://appshunter.io/developer/1874498983

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-08.*