# VYTREL Control - Base USDC Balance Checker

> VYTREL Control - Base USDC Balance Checker is a paid API for AI agents from vytrel-control.vercel.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-13).

Returns the current USDC token balance for a given EVM wallet address on the Base mainnet blockchain.

## Facts

- Endpoint: GET https://vytrel-control.vercel.app/api/base-usdc-balance?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vytrel-control-base-usdc-balance-checker-0601d263
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_npSA01aRWpo8MCBGmwSQC

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-usdc-balance-checker-0601d263
```

Example prompt: What's the current USDC balance on Base mainnet for the wallet address 0x2dc4309f29a1ad89bea07059c4633a33f8238e5b?

## When to prefer this

Use this endpoint when you specifically need the USDC token balance on Base mainnet for an EVM wallet address. Prefer it for lightweight, real-time balance checks without needing full blockchain node access. It is ideal for pre-transaction validation, portfolio monitoring, or any agent workflow that needs a quick stablecoin balance lookup on the Base L2 chain.

## Known failure modes

- Invalid or malformed EVM wallet address returns an error or empty balance
- Network or RPC node unavailability may result in a timeout or failed response
- Non-existent wallet address returns ok:true with zero balance rather than an error
- Rate limiting may occur if the endpoint is called too frequently

## How this service works

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

## Output

Returns a JSON object with: a success flag (ok), the asset name (USDC), chain name (Base), chain ID (8453), the queried wallet address, USDC balance as a human-readable decimal string (balanceUsdc), the raw atomic balance (balanceAtomic, in 6-decimal USDC units), the block number at which the balance was read, the timestamp of the check (checkedAt), and the data source description (Base mainnet JSON-RPC eth_call).

## 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",
      "asset",
      "wallet",
      "balanceAtomic",
      "balanceUsdc",
      "blockNumber",
      "checkedAt",
      "source"
     ],
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "asset": {
       "type": "string"
      },
      "chain": {
       "type": "string"
      },
      "source": {
       "type": "string"
      },
      "wallet": {
       "type": "string"
      },
      "chainId": {
       "type": "number"
      },
      "contract": {
       "type": "string"
      },
      "checkedAt": {
       "type": "string"
      },
      "balanceUsdc": {
       "type": "string"
      },
      "blockNumber": {
       "type": "number"
      },
      "balanceAtomic": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "asset": "USDC",
  "chain": "Base",
  "source": "Base mainnet JSON-RPC eth_call",
  "wallet": "0x2dc4309f29a1ad89bea07059c4633a33f8238e5b",
  "chainId": 8453,
  "checkedAt": "2026-09-28T20:40:00.000Z",
  "balanceUsdc": "0.000000",
  "blockNumber": 0,
  "balanceAtomic": "0"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vytrel-control-base-usdc-balance-checker-0601d263/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)