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apiacre.com Base Account Snapshot
x402
apiacre.com Base Account Snapshot is a paid API for AI agents from apiacre.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Returns a point-in-time snapshot of ETH balance, native USDC, up to four ERC-20 token balances, account nonce, and contract-code status for a given Base mainnet address at one resolved block.
Price / call$0.01
Success—
StatusUnknown
How this service works
Read point-in-time ETH, native USDC, and up to four caller-selected ERC-20 balances plus account nonce and contract-code status at one resolved Base mainnet block.
Output
Returns a structured JSON object containing the resolved block number and timestamp, ETH balance in wei, native USDC balance, up to four caller-specified ERC-20 balances with token metadata, the account transaction nonce, and a boolean or flag indicating whether the address holds contract bytecode (i.e., is a smart contract vs. an externally owned account).
Example use cases
DeFi portfolio balance audit
“Grab a point-in-time snapshot for my Base wallet 0xAbC...123 at the latest block — I want ETH, native USDC, and balances for USDC bridged (0xA0b86991...), DAI (0x50c5725...), WETH (0x4200000...), and cbETH (0xBe9895...), plus my nonce and whether the address is a contract.”
Pre-transaction nonce and balance check
“Before I submit a transaction from 0xDef...456 on Base, check the current ETH balance and nonce at the latest block so I can confirm I have enough gas and the right sequence number.”
Historical block state verification
“I need to verify the exact token balances held by address 0x789...ABC on Base mainnet at block 12345678 — include ETH, native USDC, and the ERC-20s at 0xToken1 and 0xToken2, and tell me if that address was a contract at that block.”
Technical details
Endpoint
POSThttps://apiacre.com/v1/crypto/base-account-snapshotWhen to prefer
Choose this endpoint when you need a comprehensive, atomic account snapshot on Base mainnet in a single call — combining ETH, USDC, multiple ERC-20 balances, nonce, and contract status — rather than making separate RPC calls for each. Ideal for agents that need to audit wallet state, validate pre-conditions before transactions, or build portfolio views without managing multiple JSON-RPC requests. Prefer this over raw eth_call when you need a unified, structured multi-token view without writing ABI call data manually.
Side effects
- Invalid or malformed Ethereum address returns a 400 error
- Unsupported or future block tag returns an error indicating the block cannot be resolved
- More than four ERC-20 addresses supplied causes a validation error
- Invalid ERC-20 contract address (non-contract or wrong chain) may return zero balance or an error
- Network or RPC timeout causes a 503 or timeout error
- Non-Base mainnet addresses not supported — using Ethereum mainnet addresses will query the wrong chain
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| address | string | |
| block_tag | string | |
| token_contracts | array |
Output
Schema · Response
{
"type": "json",
"example": {
"data": {
"block": {
"hash": "0x1111111111111111111111111111111111111111111111111111111111111111",
"number": 34567890,
"timestamp": "2026-08-10T16:00:00+00:00",
"requestedTag": "safe"
},
"nonce": 0,
"source": "https://docs.base.org/base-chain/quickstart/connecting-to-base",
"tokens": [
{
"status": "ok",
"symbol": "USDC",
"contract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"decimals": 6,
"standard": "ERC-20"
}
],
"address": "0x0000000000000000000000000000000000000000",
"hasCode": false,
"network": "eip155:8453",
"balances": {
"eth": {
"wei": "0",
"formatted": "0"
},
"usdc": {
"atomic": "0",
"contract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"decimals": 6,
"formatted": "0"
}
},
"disclaimer": "Point-in-time public Base chain state and caller-selected token contracts onl...",
"usdcSource": "https://developers.circle.com/stablecoins/usdc-contract-addresses",
"explorerUrl": "https://basescan.org/address/0x0000000000000000000000000000000000000000",
"tokenSource": "https://eips.ethereum.org/EIPS/eip-20",
"codeSizeBytes": 0,
"requestedTokenCount": 1
},
"meta": {
"cached": false,
"sources": [],
"warnings": [],
"duration_ms": 42,
"next_actions": [
{
"path": "/v1/crypto/base-usdc-transfers",
"title": "Base USDC transfer history",
"method": "POST",
"reason": "Add recent official Base USDC transfer evidence to the point-in-time balance ...",
"service": "crypto.base-usdc-transfers"
}
]
},
"service": "crypto.base-account-snapshot",
"version": "1",
"request_id": "018f1f54-7f38-7ba2-8dc3-5f90272d9f1a"
}
}Tags
x402
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