Bankr x402 SDK - Balance Queries

This skill should be used when the user asks "what are my balances", "how much ETH do I have", "check my wallet", "show my tokens", "portfolio value", "what tokens do I own", "NFT holdings", "how much USDC", "get token balances", "wallet contents", or any question about token balances, wallet contents, portfolio values, or NFT holdings across chains using the Bankr SDK.

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Install this agent skill to your Project

npx add-skill https://github.com/majiayu000/claude-skill-registry/tree/main/skills/data/sdk-balance-queries

SKILL.md

SDK Balance Queries

Query multi-chain token balances and portfolio data using natural language prompts.

Operations

Operation	Example Prompt	Notes
Single token balance	"How much USDC do I have?"	Fastest query type
Multi-token balance	"Show my ETH, USDC, and DEGEN balances"	Single chain
All tokens on chain	"What tokens do I have on Base?"	Lists all holdings
Multi-chain balances	"Show my balances across all chains"	Slower, queries all
Portfolio value	"What's my total portfolio value in USD?"	USD conversion
Token value	"How much is my DEGEN worth?"	Single token USD
NFT holdings	"Show me my NFT collections"	Lists collections
NFT floor prices	"What's the floor price of my NFTs?"	External API calls

Prompt Patterns

# Token Balances
"What are my token balances?"
"How much [TOKEN] do I have?"
"Show my [TOKEN] balance on [CHAIN]"
"What's my balance of token 0x..."

# Multi-Chain
"Show my balances across all chains"
"What are my balances on Base and Ethereum?"
"Compare my USDC holdings across all chains"

# Portfolio Value
"What's my total portfolio value in USD?"
"How much is my [TOKEN] worth in USD?"
"What's the total value of my Base holdings?"

# NFTs
"Show me my NFT collections"
"How many Pudgy Penguins do I own?"
"What's the floor price of my NFTs?"

Usage

typescript

import { BankrClient } from "@bankr/sdk";

const client = new BankrClient({
  privateKey: process.env.BANKR_PRIVATE_KEY as `0x${string}`,
});

const result = await client.promptAndWait({
  prompt: "What are my token balances on Base?",
});

console.log(result.response);
// "You have 150.5 USDC, 0.25 ETH, 1000 DEGEN on Base..."

Supported Chains

Chain	Notes
Base	Default chain, fastest responses
Ethereum	Mainnet ERC20 and NFTs
Polygon	L2 tokens and NFTs
Solana	SPL tokens and NFTs

Specify chain in prompt: "on Base", "on Ethereum", "on Polygon", "on Solana"

Related Skills

sdk-wallet-operations: Client setup and configuration
sdk-capabilities: Full list of supported operations