sdk-transaction-builder_skill

This skill helps you construct and validate complex blockchain transactions for token transfers, NFT ops, and cross-chain operations using Bankr SDK.

JavaScript

70

GitHub Stars

1

Bundled Files

2 months ago

Catalog Refreshed

4 months ago

First Indexed

Readme & install

Copy the install command, review bundled files from the catalogue, and read any extended description pulled from the listing source.

Installation

Preview and clipboard use veilstrat where the catalogue uses aiagentskills.

npx veilstrat add skill bankrbot/claude-plugins --skill sdk-transaction-builder

SKILL.md2.9 KB

Overview

This skill builds blockchain transactions for token transfers, NFT operations, ETH/WETH conversions, cross-chain bridges, and DeFi interactions using the Bankr x402 SDK. It prepares signed-ready transaction objects and returns metadata for verification. Use it when you need programmatic, multi-chain transaction construction beyond simple swaps.

How this skill works

Provide a natural-language prompt or structured parameters describing the action (amount, token, recipient, chain, and optional sale/mint details). The skill maps the intent to a transaction type (ERC20 transfer, ETH transfer, wrap/unwrap, NFT transfer/mint/buy, or bridge) and returns one or more transaction objects plus __ORIGINAL_TX_DATA__ metadata for validation. You can inspect metadata, then submit the transaction with your wallet provider.

When to use it

Sending ERC20 tokens or native ETH to another address
Wrapping ETH to WETH or unwrapping WETH back to ETH
Transferring or minting NFTs (Manifold, SeaDrop, marketplace buys)
Bridging tokens or ETH across supported chains
Building DeFi transactions that are not simple swaps (approvals, complex interactions)

Best practices

Always inspect tx.metadata.__ORIGINAL_TX_DATA__ before sending to verify chain, amount, and receiver
Estimate gas and allow for network congestion; use the timing guidelines to set timeouts
Perform token approval checks when interacting with contracts to avoid failed transactions
Use small test amounts on a compatible testnet or low-value transfer before large operations
Keep private keys and signing wallets off the server; construct transactions server-side but sign client-side when possible

Example use cases

Send 100 USDC on Ethereum to 0x742d35... and receive the prepared transaction to sign
Wrap 0.5 ETH into WETH on Base and get the exact transaction payload
Transfer an ERC-721 Pudgy Penguin #1234 to another address with metadata proof
Bridge 100 USDC from Ethereum to Base and monitor cross-chain timing
Mint from a Manifold contract or buy the cheapest NFT on OpenSea using a marketplace purchase flow

FAQ

Inspect tx.metadata.__ORIGINAL_TX_DATA__ which includes chain, inputTokenAmount, inputTokenTicker, receiver, and a humanReadableMessage before signing.

Can I build a transaction and sign it elsewhere?

Yes. The skill returns raw transaction objects suitable for external signing and submission via your preferred wallet or provider.