SDK Transaction Builder
Build blockchain transactions for transfers, NFTs, bridges, and DeFi operations.
Transaction Types
Type Description Example Prompt
transfer_erc20
Send ERC20 tokens "Send 100 USDC to 0x..."
transfer_eth
Send native ETH "Send 0.1 ETH to 0x..."
convert_eth_to_weth
Wrap ETH "Wrap 0.5 ETH"
convert_weth_to_eth
Unwrap WETH "Unwrap 1 WETH"
transfer_nft
Send NFT "Transfer my NFT #123 to 0x..."
buy_nft
Purchase NFT "Buy the cheapest Pudgy Penguin"
mint_manifold_nft
Mint from Manifold "Mint from Manifold at 0x..."
mint_seadrop_nft
Mint from SeaDrop "Mint from SeaDrop at 0x..."
swapCrossChain
Bridge tokens "Bridge 100 USDC from Ethereum to Base"
Prompt Patterns
Transfers
"Send 100 USDC to 0x742d35..." "Transfer 0.5 ETH to vitalik.eth" "Send 50 USDC to 0x123... on Base"
ETH/WETH
"Wrap 0.5 ETH to WETH" "Unwrap 1 WETH to ETH"
NFTs
"Transfer my Pudgy Penguin #1234 to 0x..." "Buy the cheapest Pudgy Penguin on OpenSea" "Mint NFT from Manifold contract 0x..."
Cross-Chain
"Bridge 100 USDC from Ethereum to Base" "Move 0.5 ETH from Base to Ethereum"
Usage
import { BankrClient } from "@bankr/sdk";
const client = new BankrClient({
privateKey: process.env.BANKR_PRIVATE_KEY as 0x${string},
});
// Transfer tokens const result = await client.promptAndWait({ prompt: "Send 100 USDC to 0x742d35Cc6634C0532925a3b844Bc9e7595f0bEb0", });
if (result.status === "completed" && result.transactions) { const tx = result.transactions[0].metadata.transaction; await wallet.sendTransaction(tx); }
Transaction Metadata
All transactions include metadata for verification:
const tx = result.transactions[0]; const meta = tx.metadata.ORIGINAL_TX_DATA;
console.log(Chain: ${meta.chain});
console.log(Amount: ${meta.inputTokenAmount} ${meta.inputTokenTicker});
console.log(To: ${meta.receiver});
console.log(Message: ${meta.humanReadableMessage});
Timing Guidelines
Operation Typical Time
ERC20/ETH transfer 2-5s
Wrap/Unwrap 2-5s
NFT transfer 3-5s
NFT purchase 5-10s
Cross-chain bridge 10-30s
Related Skills
-
sdk-token-swaps: Token swap patterns and approval handling
-
sdk-capabilities: Full list of supported operations
-
sdk-wallet-operations: Client setup and configuration