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apiacre.com Base Account Status
x402
apiacre.com Base Account Status is a paid API for AI agents from apiacre.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).
Reads ETH balance, transaction nonce, and contract-code presence for a single Ethereum address on Base mainnet at a specific resolved block.
Price / call$0.003
Success—
StatusUnknown
How this service works
Check one Base mainnet wallet or contract for ETH and official USDC balances, transaction nonce, and contract-bytecode evidence at a single resolved block.
Output
Returns the ETH balance (in wei or formatted units), transaction nonce, and a boolean or bytecode indicator showing whether the address has contract code deployed — all resolved at a single specified Base mainnet block height.
Example use cases
Pre-flight wallet check before transfer
“Before I send ETH on Base, check address 0x4Fd8...3aB2's current ETH balance and nonce at the latest block so I can confirm it's active and has funds.”
Contract vs EOA detection
“Is 0x7E9A...1cD4 a smart contract or a regular wallet on Base mainnet? Check it at the current block and tell me if there's any deployed bytecode.”
Historical account snapshot for audit
“I need the ETH balance and nonce for address 0x23Ff...88EA on Base mainnet as it stood at block 12500000 for our audit trail.”
Technical details
Endpoint
POSThttps://apiacre.com/v1/crypto/base-account-statusWhen to prefer
Use this endpoint when you need a lightweight, single-address account snapshot on Base mainnet — specifically ETH balance, nonce, and contract presence — without needing token balances or full call execution. It is ideal for pre-transaction checks, EOA vs contract detection, and point-in-time audits. Choose the multi-balance sibling endpoint if you also need ERC-20 token balances.
Side effects
- Invalid Ethereum address format returns a 400-level error
- Requested block number not yet mined or too far in the past may return an error or empty result
- Network timeout or RPC unavailability from Base mainnet node
- Malformed request body missing required address or block fields
- Rate limiting or payment failure (x402) if USDC balance is insufficient
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| address | string | |
| block_tag | string |
Output
Schema · Response
{
"type": "json",
"example": {
"data": {
"code": {
"sha256": "98d785fcb1bf847f287adc2310759fd94cc13e754b974bc72131382e8266f607",
"status": "present",
"sizeBytes": 1852
},
"block": {
"hash": "0xbf20a3349486d50cba755d4a64cc4cbc64565c6133b7d25befe760b4331c2a4a",
"number": 49895352,
"timestamp": "2026-08-13T00:14:11+00:00",
"requestedTag": "safe"
},
"nonce": 1,
"source": "https://docs.base.org/base-chain/quickstart/connecting-to-base",
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"network": "eip155:8453",
"readOnly": true,
"warnings": [],
"disclaimer": "Point-in-time public Base state only. Empty code does not prove that an addre...",
"ethBalance": {
"wei": "9800646158085843",
"formatted": "0.009800646158085843"
},
"usdcSource": "https://developers.circle.com/stablecoins/usdc-contract-addresses",
"explorerUrl": "https://basescan.org/address/0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"usdcBalance": {
"atomic": "0",
"contract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"decimals": 6,
"formatted": "0"
},
"networkRequestsMade": 2,
"transactionBroadcast": false
},
"meta": {
"cached": false,
"sources": [],
"warnings": [],
"duration_ms": 42,
"next_actions": [
{
"path": "/v1/crypto/base-account-snapshot",
"title": "Base account snapshot",
"method": "POST",
"reason": "Expand the account status into one-block ETH, native USDC, and optional calle...",
"service": "crypto.base-account-snapshot"
}
]
},
"service": "crypto.base-account-status",
"version": "1",
"request_id": "018f1f54-7f38-7ba2-8dc3-5f90272d9f1a"
}
}Tags
x402
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