# Hoppscotch — Open-Source API Development Platform

> Test APIs with a beautiful UI. REST, GraphQL, WebSocket, SSE, and gRPC. Self-hostable Postman alternative. 78K+ GitHub stars.

## Install

Copy the content below into your project:

# Hoppscotch — Open-Source API Development Platform

## Quick Use

Use instantly at [hoppscotch.io](https://hoppscotch.io) — no account needed.

Self-host:
```bash
git clone https://github.com/hoppscotch/hoppscotch.git
cd hoppscotch
docker compose up -d
```

Open `http://localhost:3000` — your API development platform is live.

Desktop app available for macOS, Windows, and Linux.

---

## Intro

Hoppscotch is an open-source API development ecosystem with 78,700+ GitHub stars — the most popular Postman alternative. Test REST, GraphQL, WebSocket, Server-Sent Events, Socket.IO, MQTT, and gRPC APIs with a fast, keyboard-driven interface. Available as a web app, desktop app, and CLI, Hoppscotch supports team workspaces, collections, environment variables, pre/post request scripts, and CI/CD integration. For AI developers, it's essential for testing LLM APIs, webhook integrations, and streaming endpoints.

Works with: Any REST/GraphQL/WebSocket/gRPC API, OpenAI API, Anthropic API, any LLM endpoint. Best for developers testing and documenting APIs. Setup time: instant (web) or under 3 minutes (self-host).

---

## Hoppscotch Features

### Protocol Support

| Protocol | Features |
|----------|----------|
| **REST** | All methods, headers, body, auth, params |
| **GraphQL** | Query, mutation, subscription, schema explorer |
| **WebSocket** | Connect, send/receive messages |
| **SSE** | Server-Sent Events (LLM streaming!) |
| **Socket.IO** | Real-time event testing |
| **MQTT** | IoT message broker testing |
| **gRPC** | Unary, streaming, reflection |

### Testing AI APIs

```
POST https://api.openai.com/v1/chat/completions

Headers:
  Authorization: Bearer {{OPENAI_API_KEY}}
  Content-Type: application/json

Body:
{
  "model": "gpt-4o",
  "messages": [{"role": "user", "content": "Hello!"}],
  "stream": true
}

// Response streams in real-time in the SSE tab
```

### Collections & Environments

- Organize requests into folders and collections
- Environment variables (dev, staging, production)
- Share collections with team members
- Import/export Postman collections

### Pre/Post Request Scripts

```javascript
// Pre-request: Generate timestamp
pw.env.set("timestamp", Date.now().toString());

// Post-request: Extract token
const token = pw.response.body.access_token;
pw.env.set("auth_token", token);
```

### CLI for CI/CD

```bash
npm install -g @hoppscotch/cli
hopp test -e production my-collection.json
```

### Team Workspaces

- Shared collections and environments
- Role-based access control
- Real-time collaboration
- Activity history

### Keyboard-First Design

Every action has a shortcut. Send request: `Ctrl+Enter`. New request: `Ctrl+N`. Switch tabs: `Ctrl+1-9`.

---

## FAQ

**Q: What is Hoppscotch?**
A: Hoppscotch is an open-source API platform with 78,700+ GitHub stars for testing REST, GraphQL, WebSocket, SSE, and gRPC APIs. Fast, keyboard-driven Postman alternative.

**Q: Can I import my Postman collections?**
A: Yes. Hoppscotch imports Postman v2 collections, OpenAPI/Swagger specs, and cURL commands.

**Q: Is Hoppscotch free?**
A: Yes, open-source under MIT license. Web app is free. Self-host for free.

---

## Source & Thanks

> Created by [Hoppscotch](https://github.com/hoppscotch). Licensed under MIT.
>
> [hoppscotch](https://github.com/hoppscotch/hoppscotch) — ⭐ 78,700+

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## 快速使用

访问 [hoppscotch.io](https://hoppscotch.io) 立即使用，无需账号。

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## 简介

Hoppscotch 是拥有 78,700+ GitHub stars 的开源 API 开发平台，支持 REST、GraphQL、WebSocket、SSE、gRPC。键盘驱动的快速界面，团队工作区，CI/CD 集成。Postman 的开源替代品。

---

## 来源与感谢

> Created by [Hoppscotch](https://github.com/hoppscotch). Licensed under MIT.
>
> [hoppscotch](https://github.com/hoppscotch/hoppscotch) — ⭐ 78,700+


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Source: https://tokrepo.com/en/workflows/1a83c479-0009-482b-9b11-bb41fb93d5be
Author: AI Open Source