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EVM State Batch — Multi-Chain Wallet Snapshot
x402
EVM State Batch — Multi-Chain Wallet Snapshot is a paid API for AI agents from evmstate.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-17).
Executes a batch of read-only EVM checks (wallet balances, token holdings, allowances, contract state, block data) across Ethereum, Base, Arbitrum, Optimism, and Polygon in a single call.
Price / call$0.1
Success—
StatusUnknown
How this service works
Batch read-only wallet, token, allowance, contract, and block checks across Ethereum, Base, Arbitrum, Optimism, and Polygon. Fixed Base USDC prices from $0.05.
Output
A JSON object containing an array of results where each entry corresponds to one batched check — including chain, type (e.g. block_number, balance, allowance), and the returned value — plus an expiry timestamp, a unique requestId, a recoveryUrl to re-fetch results, a verification note, and a snapshotBlocks map showing the block at which each chain's state was captured.
Example use cases
Multi-chain DeFi portfolio audit
“Pull a snapshot of wallet 0xDEF...456 showing its ETH balance, USDC holdings, and all ERC-20 allowances on Ethereum, Base, and Arbitrum simultaneously so I can see the full picture before rebalancing.”
Pre-transaction allowance safety check
“Before I approve a new DeFi protocol, check all existing token allowances for wallet 0xABC...789 on Optimism and Polygon and let me know if anything looks dangerously open.”
Cross-chain liquidity verification
“I need to confirm that wallet 0x111...222 has at least 500 USDC available across Base, Arbitrum, and Polygon combined — can you check all three chains in one go and give me a breakdown?”
Technical details
Endpoint
POSThttps://evmstate.com/v1/state-batch/50?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to read multiple types of on-chain state (balances, allowances, contract data, block info) across several EVM-compatible chains in a single atomic snapshot. It is ideal for DeFi portfolio audits, pre-transaction state checks, and multi-chain liquidity verification where minimizing round-trips and ensuring a consistent block-anchored snapshot matters. Prefer it over making individual per-chain RPC calls when you need correlated multi-chain data with a guaranteed recovery URL.
Side effects
- Invalid or malformed wallet/contract addresses return per-item errors within the results array
- Unsupported chain identifiers cause individual checks to fail without rejecting the whole batch
- Expired results (past expiresAt) are no longer available at the primary endpoint but may be recoverable via recoveryUrl
- Payment failure (x402) if insufficient USDC balance causes the entire request to be rejected
- Network congestion on a specific chain may cause individual RPC calls to time out and return null values
- Requesting more than 50 items in a single batch exceeds the endpoint's capacity
Output
Schema · Response
{
"type": "json",
"example": {
"results": [
{
"id": "ethereum-native-balance",
"type": "native_balance",
"chain": "ethereum",
"value": "0x0",
"blockNumber": "0x18e456e"
},
{
"id": "base-native-balance",
"type": "native_balance",
"chain": "base",
"value": "0x0",
"blockNumber": "0x31a5006"
},
{
"id": "arbitrum-native-balance",
"type": "native_balance",
"chain": "arbitrum",
"value": "0x0",
"blockNumber": "0x1e729abb"
},
{
"id": "optimism-native-balance",
"type": "native_balance",
"chain": "optimism",
"value": "0x0",
"blockNumber": "0x965919b"
},
{
"id": "polygon-native-balance",
"type": "native_balance",
"chain": "polygon",
"value": "0x0",
"blockNumber": "0x5a67efe"
}
],
"expiresAt": "2026-11-01T00:00:00.000Z",
"requestId": "12345678-1234-4234-9234-123456789abc",
"recoveryUrl": "https://evmstate.com/v1/results/12345678-1234-4234-9234-123456789abc",
"verification": "each result is a successful JSON-RPC response",
"snapshotBlocks": {
"base": "0x31a5006",
"polygon": "0x5a67efe",
"arbitrum": "0x1e729abb",
"ethereum": "0x18e456e",
"optimism": "0x965919b"
}
}
}Tags
x402
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