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Base Wallet Intelligence API (x402 Payment-Gated)
x402
Base Wallet Intelligence API (x402 Payment-Gated) is a paid API for AI agents from nova5-x402.yesterdays-signal.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).
Returns live on-chain wallet data for a given EVM address on Base, including USDC balance, native ETH balance, current gas price, and latest block info, paid per-call with USDC via x402.
Price / call$0.001
Success—
StatusUnknown
How this service works
Live Base wallet intelligence paid with USDC via x402
Output
Returns a JSON object with the wallet's USDC balance, native ETH balance, current gas price in both wei and gwei, the latest Base block number, the block timestamp, and a provenance string indicating data source.
Example use cases
Pre-payment wallet sufficiency check
“Before I send that USDC payment, can you check whether wallet 0xAbCd1234...5678 has enough USDC balance on Base to cover it?”
DeFi portfolio snapshot
“Pull the live ETH and USDC balances for the Base wallet 0xDeFi9876...Cafe so I can see its current on-chain state.”
Gas price monitoring before transaction
“What's the current gas price on Base in gwei right now? Check against wallet 0xABCD...1234 while you're at it so I know if it has enough ETH for gas.”
Technical details
Endpoint
GEThttps://nova5-x402.yesterdays-signal.workers.dev/walletWhen to prefer
Use this endpoint when you need real-time, on-chain wallet intelligence specifically on the Base L2 network — including USDC balance, native ETH balance, and current gas prices — and are operating in an x402-compatible payment environment. Prefer this over generic blockchain explorers when you need structured, machine-readable data payable per-call with USDC microtransactions.
Side effects
- Invalid or malformed EVM address returns an error response
- Wallet with no on-chain history may return zero balances
- x402 payment failure or insufficient USDC for the $0.001 fee blocks the request
- Network timeouts if Base RPC is congested
- Rate limiting if payment is not processed correctly
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| addressrequired | string | EVM wallet address |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| provenance | string | |
| block_number | number | |
| usdc_balance | number | |
| gas_price_wei | string | |
| gas_price_gwei | number | |
| native_balance | number | |
| block_timestamp | number |
Tags
x402
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