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Xerxes Ethereum ETH Balance Lookup
x402
Xerxes Ethereum ETH Balance Lookup is a paid API for AI agents from ari001.tailb4ac3a.ts.net, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-02).
Returns the Ether balance (in wei and hex) of a given Ethereum address as of the latest block via eth_getBalance RPC.
Price / call$0.003
Success—
StatusUnknown
How this service works
Returns the Ether balance of a given address on the Ethereum mainnet, as of the latest block. This is a direct RPC call to eth_getBalance with the address parameter. Query: address (0x + 40 hex).
Output
Returns a JSON object with: ok (boolean success flag), hex (ETH balance as a hex string in wei), result (ETH balance as an integer in wei), chain (network identifier, e.g. 'ethereum'), method (RPC method name 'eth_getBalance'), and an error string if ok is false.
Example use cases
Portfolio ETH balance check
“Can you look up how much ETH is currently held in the wallet 0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B on Ethereum mainnet?”
Smart contract ETH holdings audit
“I need to know the current ETH balance of the Uniswap v3 factory contract at 0x1F98431c8aD98523631AE4a59f267346ea31F984 — can you check that for me?”
Pre-transaction balance verification
“Before I send a transaction, can you confirm the ETH balance on address 0x742d35Cc6634C0532925a3b844Bc454e4438f44e to make sure there's enough to cover gas?”
Technical details
Endpoint
GEThttps://ari001.tailb4ac3a.ts.net/v1/ventures/ethereum_rpc_api/eth_getbalance?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a live, mainnet ETH balance for a specific Ethereum address and want a minimal, direct RPC lookup without additional token data. Prefer this over ERC-20 balance endpoints when you need native Ether (not token) balance, and over block explorers when you need a programmatic, agent-callable response with structured JSON output including hex and integer wei values.
Side effects
- Invalid address format (not matching ^0x[a-fA-F0-9]{40}$) returns an error response
- Address not found or zero-balance address returns 0x0 (not an error)
- RPC node unavailability or timeout returns ok: false with an error message
- Rate limiting or payment failure (x402) blocks the request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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