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EVM Wallet On-Chain Snapshot
x402
EVM Wallet On-Chain Snapshot is a paid API for AI agents from openworker.etips.me, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-16).
Returns a verifiable snapshot of an EVM wallet including native balance, ERC-20 token balances, current block number, and recent activity count across Ethereum, Base, Arbitrum, and Polygon.
Price / call$0.01
Success—
StatusUnknown
How this service works
Returns a single, verifiable snapshot of any EVM wallet: native balance, ERC-20 token balances, current block number, and recent activity count across the most popular chains (Ethereum, Base, Arbitrum, Polygon). Built for x402 agents that need on-chain facts without managing RPC keys or node infrastructure. Each call returns a deterministic JSON payload with a chain-specific block number at snapshot time so results can be independently verified against a public RPC or block explorer.
Output
A deterministic JSON payload containing the wallet's native coin balance, ERC-20 token balances for well-known tokens (if requested), the current block number at snapshot time for the target chain, and a count of recent wallet activity — all attributable to a specific block for independent verification.
Example use cases
DeFi portfolio balance check
“What's the current ETH and token balance for wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Base? I want to see native and ERC-20 holdings.”
Agent wallet activity audit
“Check whether wallet 0xAbCd1234567890abcdef1234567890abcdef1234 on Arbitrum has had any recent on-chain activity and what its current balances look like.”
Cross-chain balance verification
“Get me a verifiable snapshot of wallet 0x742d35Cc6634C0532925a3b844Bc454e4438f44e on Polygon, including token balances, so I can confirm the block number and independently verify it on a block explorer.”
Technical details
Endpoint
POSThttps://openworker.etips.me/api/services/onchain_wallet_snapshot?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs on-chain wallet facts (balances, token holdings, activity) without managing its own RPC keys or node infrastructure. Ideal for x402-compatible agents that need a single deterministic, verifiable snapshot tied to a block number across Ethereum, Base, Arbitrum, or Polygon. Prefer this over self-managed RPC calls when auditability and simplicity matter more than raw throughput.
Side effects
- Invalid wallet address format (not 0x-prefixed 40 hex chars) returns validation error
- Unsupported chain value returns enum validation error
- Downstream RPC unavailability may cause timeout or 503
- Empty/zero balances returned for wallets with no holdings (not an error)
- Payment failure via x402 protocol if USDC balance is insufficient
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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