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SKILL.md
npx skills add bankrbot/claude-plugins --skill bankr-x402-sdk---transaction-builder
This skill should be used when the user asks to "send tokens", "transfer ETH", "send USDC to", "transfer NFT", "wrap ETH", "unwrap WETH", "bridge tokens", "mint NFT", "buy NFT", "approve token", "build transaction", "DeFi transaction", or needs to build transactions for transfers, approvals, NFT operations, cross-chain bridges, ETH/WETH conversions, or DeFi interactions beyond simple swaps using the Bankr SDK.
npx skills add bankrbot/claude-plugins --skill bankr-x402-sdk---transaction-builder
Build blockchain transactions for transfers, NFTs, bridges, and DeFi operations.
| 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" |
All transactions include metadata for verification:
| 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 |
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);
}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}`);