> For the complete documentation index, see [llms.txt](https://wallet-docs.broearn.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wallet-docs.broearn.com/ethereum-and-evm/detecting-the-provider.md).

# Detecting the Provider

To detect if a user has already installed Broearn Wallet, a web application should check for the existence of a `bw` object. Broearn Wallet's browser extension and mobile in-app browser will both inject a `bw` object into the [window](https://developer.mozilla.org/en-US/docs/Web/API/Window) of any web application the user visits.

If a `bw` object exists, Ethereum dApps can interact with Broearn Wallet via the API found at `window.bw.eth`. This `eth`provider is also made available at `window.ethereum` but is prone to namespace collisions from other injected wallets.

If Broearn Wallet is not installed, we recommend you redirect your users to [our website](https://www.broearn.com/en/wallet). Altogether, this may look like the following.

{% tabs %}
{% tab title="window\.bw" %}

```typescript
const getProvider = () => {
  if ('bw' in window) {
    const anyWindow: any = window;
    const provider = anyWindow.bw.eth;
   
    if (provider) {
      return provider;
    }
  }

  window.open('https://broearn.com/', '_blank');
};
```

{% endtab %}
{% endtabs %}


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://wallet-docs.broearn.com/ethereum-and-evm/detecting-the-provider.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.