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EVM Nonce Lookup — Ethereum
x402
EVM Nonce Lookup — Ethereum is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-30).
Returns the current on-chain transaction nonce for a given Ethereum address
Price / call$0.001
Success—
StatusUnknown
How this service works
EVM Nonce (ethereum). Ethereum account nonce: confirmed and pending transaction count for any address.
Output
Returns the current nonce (transaction count) for the specified Ethereum address — a numeric value representing how many transactions have been confirmed from that address on Ethereum mainnet. This value is essential for constructing and sequencing new outbound transactions.
Example use cases
Pre-transaction nonce check
“Before I submit this Ethereum transaction, can you look up the current on-chain nonce for my wallet 0xAbCd1234567890AbCd1234567890AbCd12345678 so I know what to set in the tx?”
Debugging stuck Ethereum transactions
“My transaction seems stuck — can you check the current nonce on Ethereum mainnet for address 0xDeAdBeEf1234567890DeAdBeEf1234567890DeAd so I can figure out if there's a nonce gap?”
Monitoring wallet activity
“How many transactions has the Ethereum address 0x1234567890AbCdEf1234567890AbCdEf12345678 sent so far? I want to track if this wallet has been active.”
Technical details
Endpoint
GEThttps://saylorinnovations.com/api/evm/ethereum/nonce/:address?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need the current confirmed nonce for an Ethereum mainnet address specifically, particularly before constructing or signing a new transaction. Prefer this over generic RPC calls when you want a simple, pay-per-use REST API without managing your own Ethereum node. For Polygon or Arbitrum nonces, sibling endpoints on the same provider are available.
Side effects
- Invalid or malformed Ethereum address returns an error response
- Address with no transactions returns nonce of 0
- Network connectivity issues to Ethereum RPC may result in delayed or failed responses
- Non-checksummed address formats may cause parsing errors
Tags
x402
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