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.
- Installs
- 361
- Last 24h
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- Security
- Not audited
Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/bankrbot/claude-plugins --skill bankr-x402-sdk---transaction-builder- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads bankr x402 sdk - transaction builder automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
SKILL.md
The instructions your agent reads when the skill is triggered.
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
FAQ
What does the bankr x402 sdk - transaction builder skill do?
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.
How do I install bankr x402 sdk - transaction builder?
Run npx skills add https://github.com/bankrbot/claude-plugins --skill bankr-x402-sdk---transaction-builder in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/bankr-x402-sdk---transaction-builder/ (personal) or .claude/skills/bankr-x402-sdk---transaction-builder/ (project).
Which AI agents can use bankr x402 sdk - transaction builder?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is bankr x402 sdk - transaction builder safe to install?
No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.
Who maintains bankr x402 sdk - transaction builder?
It is published by bankrbot in bankrbot/claude-plugins. It has 361 recorded installs.
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