# DApp Connector

## DApp connectors

NuFi offers several DApp connectors allowing it to interact with DApps across multiple blockchains. Below are instructions/resources clarifying how to integrate them.

### Cardano

NuFi's Cardano connector implements the [CIP-30](https://github.com/cardano-foundation/CIPs/tree/master/CIP-0030) standard and the API should behave the same as Flint wallet's CIP-30 connector, except it's injected as `window.cardano.nufi`. More info at [https://www.cardano-caniuse.io](https://www.cardano-caniuse.io/).

### Ethereum / EVM

NuFi's Ethereum connector implements Metamask's API documented here: <https://docs.metamask.io/guide/ethereum-provider.html#methods>. When integrating NuFi we suggest following the [eip-6963](https://eips.ethereum.org/EIPS/eip-6963) standard.

#### **Legacy eip-5749**

NuFi still supports [eip-5749](https://eips.ethereum.org/EIPS/eip-5749) standard and you can load NuFi from `window.evmproviders`. However, its prefered to use [eip-6963](https://eips.ethereum.org/EIPS/eip-6963) instead.

#### **Legacy `window.ethereum` injection**

NuFi still offers legacy support and also tries to inject itself into`window.ethereum,` but we discourage using this approach and rather move to eip-5749 proposal. Note that in that case, NuFi will not inject its API if it detects Metamask or other wallet injecting into the `window.ethereum` object, to avoid interference with these wallets. Therefore, in order to use NuFi's Ethereum connector you need to make sure that there are no other active Ethereum wallet extensions (i.e. they must be disabled/uninstalled). NuFi supports Ethereum and all EVM networks.

### Solana / SVM

NuFi's Solana connector can be integrated through the Solana Wallet Standard (<https://github.com/anza-xyz/wallet-standard>). More info [here](https://github.com/wallet-standard/wallet-standard).

### Bitcoin

NuFi's Bitcoin connector implements the [sats-connect](https://docs.xverse.app/sats-connect/wallet-providers) standard and registers itself into the `window.btc_providers` global array, following the [WBIP-0004 standard](https://wbips.netlify.app/wbips/WBIP004). The API should behave the same as Xverse Bitcoin wallet connector, except it's injected as `window.nufiBitcoin`.

### Flow

NuFi works with the official [fcl-js](https://github.com/onflow/fcl-js) SDK and is fully integrated with the [fcl-discovery](https://github.com/onflow/fcl-discovery) service. If you want to integrate NuFi directly, the parameters needed for that can be found [here](https://github.com/onflow/fcl-discovery/blob/812bff5b90343976835d17bc2d7810aac62d714d/data/services.json#L74).

### Tron

NuFi injects to DApps as TronLink (if TronLink not already installed). Check [TronLink docs](https://docs.tronlink.org/dapp/getting-started/) for reference.