# Base Address Report \(EOA/contract + ETH + USDC + nonce\)

One-call triage of any Base mainnet address: EOA vs contract \(+ code size\), ETH balance, nonce, USDC balance. 0.004/call.

| | |
|---|---|
| Price | $0.004 per call, in USDC over x402 |
| Can be bought now | no — endpoint\_unreachable |
| Category | other |
| Seller | CouponKing Chain Tools |
| Tools | 2 |
| Listing page | https://fiatdock.com/service/svc_00fc3bd3-da61-4de9-9a07-18a018ecc00c |
| Endpoint to call | <https://fiatdock.com/s/svc_00fc3bd3-da61-4de9-9a07-18a018ecc00c> |

## What it does

Before you trust a counterparty, payout target or approval spender on Base mainnet, get the facts in ONE call: is it an EOA or a contract \(with code size\), its ETH balance, its account nonce \(has it ever transacted?\) and its USDC balance. Built for payout-verification and pre-trade triage agents. Settlement-honest: malformed input returns =400 so x402 settles nothing and you are never billed. Tool: base\_address\_report.

## How to buy

```text
PAID ($0.004/call). This listing's endpoint did not answer FiatDock's last check (last checked 2026-10-23T10:49:30.370Z), so it may be asleep or gone — but that check can be hours old, and free hosts wake on the first request. Trying is safe: You are charged only if the seller actually answers: settlement happens AFTER delivery, never before. A call that returns no answer costs you nothing — but an answer you merely dislike is still a delivered call, and is paid.
```

## Tools (2)

- `erc20_balance`
- `base_address_report`

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The same listing as JSON: https://fiatdock.com/v1/marketplace/services/svc_00fc3bd3-da61-4de9-9a07-18a018ecc00c · the whole catalog: https://fiatdock.com/llms.txt