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Injected Provider

The Crypto.com Onchain browser extension injects an Ethereum provider, as specified by EIP-1193, into the browser at window.ethereum.

You can use this provider in your dapp to request user's Ethereum accounts, read on-chain data, and have the user sign messages and transactions, without using the Crypto.com Onchain SDK.

Wallet browser extension injects environment variables​

if you are installed wallet browser extension, then it will auto inject followings variables to window:

Injected Provider(Adapt to different eco)
interface Window {
  ethereum?: Provider;
  deficonnectProvider?: Provider;
  aptos?: PetraProvider;
  petra?: PetraProvider;
  martian?: MartianProvider;
  deficonnect: { aptos?: PetraProvider; ethereum?: Provider };
}

but you don't need care about it, Crypto.com Onchain SDK will auto handle it.

Benefits of Using Crypto.com Onchain SDK vs. the Injected Provider​

The basic functionality between Crypto.com Onchain SDK and the Crypto.com Onchain injected provider is very similar. However, the SDK provides some additional helpful features:

  • TODO: Implement

Properties​

isDeficonnectProvider

Identifies if this provider is Crypto.com Onchain.

Methods​

request(args)
interface RequestArguments {
  readonly method: string;
  readonly params?: readonly unknown[] | object;
}

Crypto.com Onchain uses request(args) to wrap an RPC API. The params and return value vary by RPC method.

If the request fails for any reason, the Promise will reject with an Ethereum RPC Error.

Crypto.com Onchain supports many standardized Ethereum RPC methods and others, including:

const dappAllowMethods = [
  "aptos_createCollection",
  "aptos_createToken",
  "aptos_generateSignAndSubmitTransaction",
  "aptos_generateTransaction",
  "aptos_getAccount",
  "aptos_getAccountResources",
  "aptos_getAccountTransactions",
  "aptos_getChainId",
  "aptos_getLedgerInfo",
  "aptos_getTransactionByHash",
  "aptos_getTransactions",
  "aptos_signAndSubmitTransaction",
  "aptos_signAndSubmitTransactionMartian",
  "aptos_signGenericTransaction",
  "aptos_signMessage",
  "aptos_signTransaction",
  "aptos_signTransactionMartian",
  "aptos_submitTransactionMartian",
  "cosmos_getAccounts",
  "cosmos_sendTransaction",
  "cosmos_signDirect",
  "cosmos_proxyJsonRpcRequest",
  "dapp_ping",
  "dc_sessionInit",
  "dc_sessionRequest",
  "dc_sessionUpdate",
  "eth_accounts",
  "eth_chainId",
  "eth_proxyJsonRpcRequest",
  "eth_sendTransaction",
  "eth_sign",
  "eth_signTransaction",
  "eth_signTypedData",
  "eth_signTypedData_v1",
  "eth_signTypedData_v2",
  "eth_signTypedData_v3",
  "eth_signTypedData_v4",
  "eth_proxyJsonRpcRequest",
  "eth_requestAccounts",
  "net_version",
  "personal_sign",
  "wallet_addEthereumChain",
  "wallet_getAllAccounts",
  "wallet_switchEthereumChain",
  "wallet_watchAsset",
];