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Base Address Inspector
x402
Base Address Inspector is a paid API for AI agents from automaton-tx-explainer.vercel.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-14).
Inspects a Base mainnet address and returns its type, token standards, proxy details, ETH balance, and a human-readable summary.
Price / call$0.005
Success—
StatusUnknown
How this service works
Inspect any Base address: EOA vs contract vs EIP-7702 delegated, ETH balance, nonce, proxy implementation (EIP-1967/1167/zos), and ERC-20 name/symbol/decimals/supply.
Output
Returns a JSON object containing the address type (EOA or contract), optional ERC-20 metadata (name, symbol, decimals), optional proxy information (standard and implementation address), the ETH balance in wei, and a concise human-readable summary string combining all findings.
Example use cases
Identify unknown contract before interacting
“Before I approve a transaction, can you inspect 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base and tell me if it's a known token contract, whether it's a proxy, and what the implementation address is?”
Verify token contract metadata
“I want to confirm that the contract at 0x2Ae3F1Ec7F1F5012CFEab0185bfc7aa3cf0DEc22 on Base is the USDC ERC-20 token — can you check its name, symbol, and decimals?”
Distinguish wallet from contract for airdrop list
“I have a list of Base addresses and need to know if 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 is a regular wallet or a smart contract before I send tokens to it.”
Technical details
Endpoint
GEThttps://automaton-tx-explainer.vercel.app/v1/base/address?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, structured breakdown of any Base mainnet address — whether it's an EOA, a token contract, or a proxy — including balance and ERC-20 metadata, all in a single call. Prefer it over raw RPC calls when you want a pre-parsed, human-readable summary without writing custom ABI decoding logic.
Side effects
- Invalid address format (not matching ^0x[0-9a-fA-F]{40}$) — request rejected before payment
- Address not found or RPC node unavailable — upstream error
- Payment failure via x402 — 402 response if USDC payment not completed
- Rate limiting or Vercel cold-start latency causing timeout
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"type": "contract",
"erc20": {
"name": "USD Coin",
"symbol": "USDC",
"decimals": 6
},
"proxy": {
"standard": "EIP-1967",
"implementation": "0x..."
},
"summary": "contract (EIP-1967 proxy) · ERC-20 USDC · 0 ETH",
"ethBalance": "0"
}
}Tags
x402
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