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ChainScope Wallet Balance
x402
ChainScope Wallet Balance is a paid API for AI agents from chainsscope.duckdns.org, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Retrieves the native token balance for a wallet address on Ethereum, Base, Bitcoin, or Solana via a single unified interface
Price / call$0.01
Success—
StatusUnknown
How this service works
Native balance for a wallet address, with one consistent response shape across Ethereum, Base, Bitcoin, and Solana -- no need to integrate each chain's RPC/explorer separately yourself.
Output
Returns a JSON object containing the queried chain name, the wallet address, the native token symbol (e.g. ETH, BTC, SOL), and the native token balance as a string representing the amount held at that address.
Example use cases
DeFi portfolio snapshot check
“Can you check the native ETH balance for wallet 0xAbC123...def on Ethereum? I want to know how much ETH they're holding right now.”
Cross-chain asset verification
“What's the native SOL balance on Solana for wallet address 7xKX...mNpQ? I need to confirm this address actually has funds before proceeding.”
Bitcoin address balance lookup
“Look up the BTC balance for Bitcoin address bc1qxy2kgdygjrsqtzq2n0yrf2493p83kkfjhx0wlh — I want to know how much bitcoin is sitting there.”
Technical details
Endpoint
POSThttps://chainsscope.duckdns.org/tools/wallet-balanceWhen to prefer
Choose this endpoint when you need a simple, unified native balance lookup across Ethereum, Base, Bitcoin, or Solana without maintaining four separate chain integrations. It is ideal for agents that need quick balance checks on multiple chains through one consistent interface and one payment model, rather than wiring up and maintaining individual chain RPC connections.
Side effects
- Invalid or malformed wallet address returns an error or empty result
- Unsupported chain identifier causes a bad request error
- Network timeout if the underlying RPC node is unresponsive
- Address with zero balance may return '0' balance rather than an error
- DuckDNS dynamic hostname may have availability or DNS resolution issues
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| chain | string | |
| address | string | wallet address for the given chain |
Output
Schema · Response
{
"type": "json",
"example": {
"chain": "ethereum",
"address": "0x1f5f8474fA0dc1Fde79187abd68Ef8Ea15ADAe34",
"native_symbol": "ETH",
"native_balance": "1.5"
}
}Tags
x402
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