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Base Wallet Snapshot
x402
Base Wallet Snapshot is a paid API for AI agents from eu-tender-x402-v3-production.up.railway.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).
Returns ETH balance, USDC balance, top ERC-20 tokens, and token count for any Base/EVM wallet address.
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-call B2B sales lead and procurement intelligence plus Base wallet data for agents. Search EU tenders/RFPs or inspect a Base wallet. Payments use x402 USDC on Base.
Output
A JSON object containing the wallet address, chain identifier ('base'), native ETH balance and symbol, USDC balance, count of distinct ERC-20 tokens held, a list of top tokens with details, and a generated_at timestamp indicating when the snapshot was taken.
Example use cases
Pre-payment wallet funding check
“Before I send a USDC payment, can you check that my Base wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 has enough ETH for gas and a positive USDC balance?”
Agent treasury balance monitoring
“Fetch the current ETH and USDC balance for our agent treasury wallet at 0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B on Base so I can see if we need to top it up.”
Counterparty due diligence
“I'm about to do a deal with a crypto counterparty — can you look up their Base wallet 0x1234567890abcdef1234567890abcdef12345678 and tell me how many tokens they hold and roughly what their portfolio looks like?”
Technical details
Endpoint
GEThttps://eu-tender-x402-v3-production.up.railway.app/api/base-wallet-snapshot?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, pay-per-call on-chain balance and token inventory snapshot for a specific Base/EVM wallet address without setting up your own RPC node or indexer. It is ideal for AI agents that need lightweight, on-demand wallet intelligence as part of a broader workflow — such as checking treasury balances, verifying counterparty funds, or gating actions on wallet state — and where paying fractions of a cent per call via x402 USDC is preferred over subscription APIs.
Side effects
- Invalid or malformed wallet address (not matching 0x + 40 hex chars) returns a validation error
- Address with no on-chain activity may return zero balances and empty token arrays
- Rate limiting or payment failure via x402 protocol returns a 402 Payment Required response
- Transient RPC or indexer downtime may return a 5xx error
- Base network congestion may cause slow or stale data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"usdc": {
"balance": "0"
},
"chain": "base",
"native": {
"symbol": "ETH",
"balance": "1.0"
},
"address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
"product": "Base Wallet Snapshot",
"top_tokens": [],
"erc20_count": 0
}
}Tags
x402
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