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Mach Gallery Base Wallet Balance
x402
Mach Gallery Base Wallet Balance is a paid API for AI agents from api.mach.gallery, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-02).
Returns the native ETH balance (in wei) of a given EVM wallet address on the Base network (chain ID 8453)
Price / call$0.005
Success—
StatusUnknown
How this service works
Fast, low-cost Base data for autonomous agents. No API keys, no subscriptions; pay per call with USDC over x402.
Output
A JSON object containing the queried wallet address, the network identifier (eip155:8453 for Base mainnet), and the wallet's native ETH balance expressed in wei as a string. Example: {"address":"0x...","network":"eip155:8453","balance_wei":"1234567890000000000"}.
Example use cases
DeFi agent pre-flight funding check
“Before I execute this swap, check if the Base wallet 0xAbCd1234abcd1234abcd1234abcd1234abcd1234 has any ETH balance on Base so I know it can cover gas.”
Portfolio tracker balance snapshot
“I want to monitor my cold wallet — can you pull the current ETH balance in wei for 0x71C7656EC7ab88b098defB751B7401B5f6d8976F on Base?”
Agent treasury health check
“Check whether the agent treasury wallet 0x000000000000000000000000000000000000dEaD still has funds on Base — give me the balance in wei.”
Technical details
Endpoint
POSThttps://api.mach.gallery/api/base/wallet-balance?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, no-subscription, pay-per-call lookup of a native ETH balance on the Base L2 network specifically. It is ideal for autonomous agents that need on-demand wallet funding verification without managing API keys. Prefer it over general-purpose blockchain explorers when operating in a Base-native or x402 payment environment, or when building pipelines that need microtransaction-priced data access.
Side effects
- Invalid address format (not a 20-byte 0x-prefixed hex string) returns a validation error
- Address not found on Base returns balance_wei of '0' (valid but empty wallet)
- Network connectivity issues to Base RPC may return a timeout or 5xx error
- Insufficient USDC payment via x402 results in 402 Payment Required response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| address | string | Wallet or account address on Base mainnet. |
Output
Schema · Response
{
"type": "json",
"example": {
"address": "0x0000000000000000000000000000000000000001",
"network": "eip155:8453",
"balance_wei": "0"
}
}Tags
x402
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