Base Wallet Snapshot

x402

Base Wallet Snapshot is a paid API for AI agents from api.arysphere.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-22).

Returns a real-time snapshot of a Base chain wallet or contract address, including native ETH balance, ERC-20 token balances, USD valuations, nonce, and contract metadata.

Price / call$0.002

Seller volume →—

Success—

StatusUnknown

How this service works

Check this wallet: Base ETH and top-10 token balances, nonce, contract flag, USD totals. Returns: a wallet snapshot on Base: the native ETH balance, nonce, whether the address is a contract, and its balances of ten major Base tokens (WETH, USDC, USDbC, DAI, cbETH, wstETH, cbBTC, AERO, VIRTUAL, DEGEN), with USD for ETH, WETH and dollar stablecoins. One batched read, cached 60 seconds; no other tokens, no labels.

Output

A JSON object containing the wallet's native ETH balance (amount and USD value), a list of recognized ERC-20 token balances (WETH, USDC) with USD valuations sourced from Chainlink, the total USD value across priced assets, the address nonce, whether the address is a contract (code_bytes), the ETH/USD price and its oracle source, the age of the data in seconds, and the number of RPC calls made.

Example use cases

DeFi portfolio value check

“Can you pull the current on-chain snapshot for 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Base and tell me how much ETH and USDC it holds and what the total is worth in USD right now?”

Contract vs wallet detection

“I need to know if the Base address 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913 is a smart contract or a regular wallet — can you grab a snapshot and tell me the code size and nonce?”

Automated treasury monitoring

“Check the current ETH and token balances on Base for our treasury address 0x4200000000000000000000000000000000000006 and give me the USD total so I can log it for today's report.”

Technical details

Endpoint

GEThttps://api.arysphere.com/v1/ventures/x402_chain_reads_v1/base_wallet_snapshot?utm_source=zero.xyz

When to prefer

Use this endpoint when you need a fast, no-auth, pay-per-call on-chain snapshot of a Base wallet or contract — specifically for ETH balance, USDC/WETH token balances, USD valuation via Chainlink, nonce, and contract detection — without needing to set up an RPC node, API key, or account. Prefer this over raw RPC calls when you want aggregated USD pricing alongside balances in a single call, and over general Ethereum endpoints when you specifically need Base chain data.

Side effects

Invalid address format (not 0x + 40 hex) returns a validation error
Address with no recognized token holdings returns an empty tokens array with usd_total_complete: false
Chainlink oracle unavailable may cause missing USD valuations
Payment failure via x402 prevents the call from being served
RPC node timeout or Base chain congestion may delay or fail the response

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

{
  "type": "json",
  "example": {
    "ok": true,
    "chain": "base",
    "cached": false,
    "method": "snapshot",
    "result": {
      "chain": "base",
      "nonce": 70,
      "native": {
        "usd": 7604.48,
        "amount": "3.12882180347273728",
        "symbol": "ETH"
      },
      "tokens": [
        {
          "usd": 540.81,
          "token": "0x4200000000000000000000000000000000000006",
          "amount": "0.222512739074208417",
          "symbol": "WETH",
          "usd_basis": "chainlink ETH/USD"
        },
        {
          "usd": 45.15,
          "token": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
          "amount": "45.145979",
          "symbol": "USDC",
          "usd_basis": "dollar stablecoin"
        }
      ],
      "address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
      "eth_usd": 2430.46003758,
      "age_secs": 0,
      "rpc_calls": 3,
      "code_bytes": 23,
      "is_contract": true,
      "eth_usd_source": "chainlink ETH/USD 0x71041dddad3595f9ced3dccfbe3d1f4b0a16bb70",
      "tokens_checked": [
        "WETH",
        "USDC"
      ],
      "usd_total_priced": 8199.06,
      "usd_total_complete": false
    },
    "service": "x402_chain_reads_v1.base_wallet_snapshot"
  }
}

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