---
title: Access App via API
description: Access FastGPT app via API
---

import { Alert } from '@/components/docs/Alert';

In FastGPT, you can create multiple API keys for each app to access the app's API endpoints. Each key can only access one app. For complete endpoint documentation, [see the Chat API reference](/docs/openapi/intro).

## Get API Key

Go to App -> "API Access", then click "API Key" to create a key.

<Alert context="warning">
  Keep your key safe. Once the dialog is closed, you cannot copy the key again -- you can only create a new key and copy it.
</Alert>

![](/imgs/fastgpt-api1.jpg)

<Alert icon="🍅" context="success">
  Tip: For security, you can set a quota or expiration time to prevent key abuse.
</Alert>

## Replace Variables in Third-Party Apps

```bash
OPENAI_API_BASE_URL: http://localhost:3000/api (replace with your deployed domain)
OPENAI_API_KEY = the key obtained in the previous step
```

**[ChatGPT Next Web](https://github.com/Yidadaa/ChatGPT-Next-Web) Example:**

![](/imgs/chatgptnext.png)

**[ChatGPT Web](https://github.com/Chanzhaoyu/chatgpt-web) Example:**

![](/imgs/chatgptweb.png)