# VYTREL Control Base Wallet Snapshot

> VYTREL Control Base Wallet Snapshot is a paid API for AI agents from vytrel-control.vercel.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-11).

Returns a snapshot of ETH and USDC balances for a given EVM wallet address on the Base mainnet at a specific block.

## Facts

- Endpoint: GET https://vytrel-control.vercel.app/api/base-wallet-snapshot?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vytrel-control-base-wallet-snapshot-1eba3ee8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_D7BTs23uugJjVlt6X7HIj

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability vytrel-control-base-wallet-snapshot-1eba3ee8
```

Example prompt: What are the current ETH and USDC balances for wallet 0x2dc4309f29a1ad89bea07059c4633a33f8238e5b on Base mainnet?

## When to prefer this

Use this endpoint when you need a real-time, pinned-block balance snapshot for ETH and USDC specifically on the Base mainnet for any EVM-compatible wallet address. Prefer it over generic blockchain explorers when you need a structured JSON response with both native and ERC-20 balances in a single call, especially in automated agent workflows that need to audit or verify wallet holdings on Base.

## Known failure modes

- Missing or invalid 'address' query parameter returns an error response
- Invalid EVM address format may cause RPC lookup failure
- RPC node unavailability may cause timeout or 5xx error
- Rate limiting or payment failure (x402) if USDC payment not included
- Wallet with no activity may return zero balances (not an error, but may be mistaken for one)

## How this service works

Machine-payable URL observations and Base wallet reads, with x402 settlement receipts.

## Output

A JSON object containing the wallet address, chain name ('Base'), chain ID (8453), block number of the snapshot, a timestamp, and an array of balances including native ETH and ERC-20 USDC with atomic (raw) and formatted decimal amounts, plus the RPC source used.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "address"
     ],
     "properties": {
      "address": {
       "type": "string",
       "description": "EVM wallet address"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "ok",
      "chain",
      "chainId",
      "wallet",
      "blockNumber",
      "balances",
      "checkedAt",
      "source"
     ],
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "chain": {
       "type": "string"
      },
      "source": {
       "type": "string"
      },
      "wallet": {
       "type": "string"
      },
      "chainId": {
       "type": "number"
      },
      "balances": {
       "type": "array"
      },
      "checkedAt": {
       "type": "string"
      },
      "blockNumber": {
       "type": "number"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "chain": "Base",
  "source": "Base mainnet JSON-RPC at one pinned block",
  "wallet": "0x2dc4309f29a1ad89bea07059c4633a33f8238e5b",
  "chainId": 8453,
  "balances": [
   {
    "type": "native",
    "asset": "ETH",
    "atomic": "0",
    "decimals": 18,
    "formatted": "0"
   },
   {
    "type": "erc20",
    "asset": "USDC",
    "atomic": "0",
    "contract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "decimals": 6,
    "formatted": "0"
   }
  ],
  "checkedAt": "2026-09-28T21:00:00.000Z",
  "blockNumber": 0
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vytrel-control-base-wallet-snapshot-1eba3ee8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from vytrel-control.vercel.app](https://www.zero.xyz/host/vytrel-control.vercel.app/llms.txt)