Bankr X402 SDK Balance Queries

A natural language interface for querying crypto balances across multiple chains. You can ask it things like "How much USDC do I have?" or "Show my balances across all chains" and it fetches the data through the Bankr x402 SDK. Handles single tokens, multi-chain portfolios, USD conversions, and even NFT floor prices. The documentation breaks down query types by speed, which is helpful since multi-chain queries are noted as slower. It's straightforward if you need to check wallet balances without switching between block explorers or writing your own web3 calls. The repo has 78 stars, so there's at least some community validation.

GitHub stars: 80
last updated: Aug 21, 2026

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Install

$ npx -y skills add bankrbot/claude-plugins --skill 'Bankr x402 SDK - Balance Queries' --agent claude-code

Installs into .claude/skills of the current project.

Files

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"

SKILL.md on GitHub