# EVM Nonce Lookup (Polygon) — Saylor Innovations

> EVM Nonce Lookup (Polygon) — Saylor Innovations 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 transaction count (nonce) for an Ethereum-compatible address on the Polygon network

## Facts

- Endpoint: GET https://saylorinnovations.com/api/evm/polygon/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-polygon-saylor-innovations-0e4d3b45
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hUXNR_3lX3fYe23juZDgI

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-polygon-saylor-innovations-0e4d3b45
```

Example prompt: What's the current nonce for the Polygon wallet address 0x4B20993Bc481177ec7E8f571ceCaE8A9e22C02db?

## When to prefer this

Choose this endpoint when you need the current nonce for an EVM address specifically on the Polygon (MATIC) network. Use this over general RPC calls when you need a simple, cost-effective API wrapper without managing your own node. Prefer the Arbitrum sibling endpoint if the target chain is Arbitrum instead of Polygon.

## Known failure modes

- Invalid or malformed Ethereum address returns an error
- Address with zero transactions returns nonce of 0 (not an error, but may be misinterpreted)
- Network connectivity issues with Polygon RPC node may return an error or timeout
- Non-checksummed addresses may or may not be accepted depending on implementation

## How this service works

EVM Nonce (polygon). Polygon PoS account nonce for any address: confirmed nonce and pending nonce (a gap means transactions are still waiting in the mempool). Use it before sending a transaction or to detect a pending one.

## Output

Returns the current nonce (transaction count) for the given EVM address on the Polygon network — an integer representing the total number of confirmed transactions sent from that address.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/evm-nonce-lookup-polygon-saylor-innovations-0e4d3b45/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)