> For the complete documentation index, see [llms.txt](https://asigna.gitbook.io/asigna/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://asigna.gitbook.io/asigna/developers/multisig-sdk/evm-sdk.md).

# EVM SDK

Asigna leverages Safe Global's EVM smart contract multisig logic, allowing full compatibility with Safe's SDK. This enables you to access all of Safe's features seamlessly. For more details, refer to their documentation [here](https://docs.safe.global/sdk/overview).

To initialize the SDK, you'll need the Asigna contracts addresses deployed on your target network and the corresponding Asigna Transaction Service API URLs.

<pre class="language-javascript"><code class="lang-javascript">const RPC_URL = 'https://rpc.testnet.citrea.xyz';
const PRIVATE_KEY = 'your_signer_private_key';
const SAFE_ADDRESS = '0x03123...12'; // your deployed safe address
<strong>
</strong>const txServiceUrls = {
  4200n: "https://merlin-mainnet-api.asigna.io/txs/api", // Merlin Mainnet
  686868n: "https://merlin-testnet-api.asigna.io/txs/api", // Merlin Testnet
  5115n: "https://citrea-testnet-api.asigna.io/txs/api", // Citrea Testnet
  3636n: "https://botanix-testnet-api.asigna.io/txs/api" // Botanix Testnet
};

export const contractNetworks = {
  4200n: {
    safeSingletonAddress: '0x7479c8be2cb59813c1696d4ab8Ab574605DB36bE',
    safeProxyFactoryAddress: '0x33539b6B3B521fDd25eE5112552f56A24b87F33f',
    multiSendAddress: '0x8AA155Bd561Ff636a729362767E73b855eBF575c',
    multiSendCallOnlyAddress: '0xAd2FC07fEfccbACD6433F27Fd3fA70E318e4f687',
    fallbackHandlerAddress: '0xB96810C379e1ab89C97265EA450DE4FaD320FAB3',
    signMessageLibAddress: '0x21e9f28f769A219754B0Dd83Ef29c0155A2a56Ec',
    createCallAddress: '0x147E227890EA8A164BaaFE17a65767846AA43489',
    simulateTxAccessorAddress: '0x27A5f29189AbAcf8f5b61785bE49874879e4e9B9',
  },
  686868n: {
    safeSingletonAddress: '0x3D5177A6C60aF40B60d8c00683B160170A419858',
    safeProxyFactoryAddress: '0x427E933613Bd65E5f8B106DfE3541b68Ed86B131',
    multiSendAddress: '0x07F93f2c661CbD749D451E358685579e3564FEB6',
    multiSendCallOnlyAddress: '0x3b2fce2Cb8C9A9538F0D20eE333ebf552BDE3EFA',
    fallbackHandlerAddress: '0x47E7A87Afa01a797D2a09E37Cc16683F6e4B7519',
    signMessageLibAddress: '0x70D9E8CDcb9BB9058E68F3f7fc1Bdb7B3c2072cd',
    createCallAddress: '0x812995c19b5EA51751228A2A0c23d38eEd3ec7D1',
    simulateTxAccessorAddress: '0xbB7D99C78FE800466a144cFbdA4d83c742A5035b',
  },
  5115n: {
    safeSingletonAddress: '0x04ad731E80beE8F2BCd71048B5EA85643D9a0787',
    safeProxyFactoryAddress: '0x5A0b04FF49D430bB2989dd0966Cd490A2A1e2eA9',
    multiSendAddress: '0x2D156b196c7db6f7519E61E7EdBBdcE0396a33BA',
    multiSendCallOnlyAddress: '0xddaB6979bf0b48B2eAdfE9895059F44987745c76',
    fallbackHandlerAddress: '0xDAcbEcd96406466187c68E87cF5Ca5f588A299D4',
    signMessageLibAddress: '0x4BE868b8074DB64d895c688398521d3b0cDCEbCe',
    createCallAddress: '0x0B3dFB0Ed456B6e83a70E1a2D2Ef7DaE6AD45E63',
    simulateTxAccessorAddress: '0x2d4Dc195BCbE3E1EaFD12E9Ba28C3dDDaa3Fa56E',
  },
  3636n: {
    safeSingletonAddress: '0x2BA5157e7ab9913604d20e4Bd62EbC4fDab26032',
    safeProxyFactoryAddress: '0x760eAe3fD965C92ad6977De99Df58aF2814AD4B1',
    multiSendAddress: '0x3b644926E435E65751663a83928B983b7D78D012',
    multiSendCallOnlyAddress: '0xAa096390abc62E5A603c6F22071dd62895A596d8',
    fallbackHandlerAddress: '0xBd58c03BcB2cA285fCC578D326a7C9788A91B61a',
    signMessageLibAddress: '0x1205b09e057640d9785805CDaE64d011F30713c6',
    createCallAddress: '0x4F058Ac76040a4a2EbBc8fc960C5824ABFad9E0b',
    simulateTxAccessorAddress: '0x7872B223719895C0D9505E93D57144bD6ec9611E',
  }
};

const chainId = 5115n; // Citrea Testnet selected
const txServiceUrl = txServiceUrls[chainId];

const apiKit = new SafeApiKit({
  chainId: 1116n,
  txServiceUrl
});

const safeSigner = await Safe.init({
  provider: RPC_URL,
  signer: PRIVATE_KEY,
  safeAddress: SAFE_ADDRESS,
  contractNetworks
});

</code></pre>

The core SDK logic is detailed on [Safe's documentation page](https://docs.safe.global/sdk/overview).


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