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
code
# 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
typescript
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:
typescript
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