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Wallet Nonce Lookup - Base & Ethereum
x402
Wallet Nonce Lookup - Base & Ethereum is a paid API for AI agents from scanpay-edge.alextaghiashvili.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-11-01).
Returns the next transaction nonce (eth_getTransactionCount) for any EVM wallet address on Base or Ethereum mainnet.
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-call x402 APIs for AI agents: OpenAI-compatible LLM chat, perp funding and arbitrage spreads, crypto prices, gas, FX, Solana SPL mint audit, token price by contract, x402 delivery-receipt verification, web search, clean page extraction, batch tools and deterministic code-security scanning. USDC on Base or Solana, no signup, no API key, from $0.0001 a call.
Output
Returns a JSON object containing the EVM address queried, the network (e.g. 'base' or 'ethereum'), the chain ID in CAIP-2 format (e.g. 'eip155:8453'), the current nonce (transaction count), the next_nonce to use for the next transaction, and the price_usd of the call.
Example use cases
Pre-sign nonce check for DeFi bot
“Before I broadcast this swap transaction, get me the correct next nonce for 0xAbCd1234...5678 on Base so the transaction doesn't get stuck or replaced.”
Wallet transaction count audit
“How many transactions has 0x1E04f5046500e5369E17AF993Dc60aC29D83efc9 sent on Ethereum mainnet so far? I want to verify the nonce count.”
Multi-step transaction sequencing
“I'm about to send 3 transactions back-to-back from 0xDead...Beef on Base — can you fetch the current nonce so I can assign sequential nonces to each one?”
Technical details
Endpoint
GEThttps://scanpay-edge.alextaghiashvili.workers.dev/api/v1/nonce?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, reliable nonce lookup for an EVM address on Base or Ethereum before constructing or signing a transaction. It is ideal for agents orchestrating on-chain transactions, DeFi bots, or wallet tooling that needs the current eth_getTransactionCount without managing their own RPC connection. Prefer this over a general RPC provider when you want a pay-per-call model with no API key setup.
Side effects
- Invalid or malformed EVM address returns an error or unexpected result
- Unsupported network parameter causes a failure response
- RPC node downtime or congestion may delay or fail the response
- Missing required address parameter results in a 400-level error
- Payment failure (insufficient USDC balance for x402 micropayment) blocks the request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"nonce": 7,
"address": "0x1E04f5046500e5369E17AF993Dc60aC29D83efc9",
"network": "base",
"product": "scanpay.nonce",
"chain_id": "eip155:8453",
"price_usd": 0.002,
"next_nonce": 7
}
}Tags
x402
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