# For Developers

## Integration with dApps

To detect if users are accessing your dApp on Fina, you can check if the following object exist.

```typescript
window.fina
```

If this is `undefined` that means user is not accessing your dApp via Fina Wallet's in-app browser.

Fina Wallet exposes the same API as [Keplr](https://www.keplr.app/). So if your dApp supports Keplr, it should be working on Fina Wallet out of the box. You can check Keplr's API documentation [here](https://docs.keplr.app/api/)

Besides, the `window.fina` object is just a pointer to `window.keplr` so the underlying methods and properties will be the same

## Deep Linking

If you want to redirect users from your dApp to Fina Wallet, you can use the following deep link

```
fina://wallet
```

If you want to redirect users to your dApp directly on Fina's in-app browser, you can use the following deep link

```
fina://wallet/dapps?network=secret-4&url=https%3A%2F%2Fcard.fina.cash
```

There are 2 url parameters in the deep link

1. `network` - the chain ID of the network your dApp is connecting to
2. `url` - your dApp's URL-encoded url

Example (provided by SCRT Labs [here](https://github.com/scrtlabs/secret.js#fina-wallet))

```typescript
const urlSearchParams = new URLSearchParams();
urlSearchParams.append("network", "secret-4");
urlSearchParams.append("url", window.location.href);

window.open(`fina://wllet/dapps?${urlSearchParams.toString()}`, "_blank");
```