# EVM Nonce Lookup — Ethereum

> 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 2026-10-03).

Returns the current on-chain transaction nonce for a given Ethereum address

## Facts

- Endpoint: GET https://saylorinnovations.com/api/evm/ethereum/nonce/:address?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-03
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/evm-nonce-lookup-ethereum-8de3a43a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_EEKFxpaj1aO1k73hsGwal

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability evm-nonce-lookup-ethereum-8de3a43a
```

Example prompt: What's the current on-chain nonce for Ethereum address 0xAbCd1234...5678? I need it before I broadcast my next transaction.

## When to prefer this

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.

## Known failure modes

- 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

## 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.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/evm-nonce-lookup-ethereum-8de3a43a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from saylorinnovations.com](https://www.zero.xyz/host/saylorinnovations.com/llms.txt)