# MolCloud Crypto Wallet Balance Lookup

> MolCloud Crypto Wallet Balance Lookup is a paid API for AI agents from api.molcloud.net, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-17).

Returns the ETH and USDC token balances for a given EVM wallet address on mainnet or Sepolia testnet.

## Facts

- Endpoint: GET https://api.molcloud.net/api/crypto/wallet?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/molcloud-crypto-wallet-balance-lookup-2fa465b3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_URnSbfcB3SfelEPe8CEkF

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 molcloud-crypto-wallet-balance-lookup-2fa465b3
```

Example prompt: What's the current ETH and USDC balance for wallet 0x742d35Cc6634C0532925a3b8D4C9C0B9A1234abc on mainnet?

## When to prefer this

Choose this endpoint when an AI agent needs to quickly look up on-chain ETH and USDC balances for any EVM-compatible wallet address on Ethereum mainnet or Sepolia testnet, especially within a pay-per-request x402 micropayment workflow. Prefer this over block explorer scraping or running a full node query when lightweight, low-cost, agent-native balance lookups are needed.

## Known failure modes

- Invalid or malformed wallet address (non-0x format) returns an error
- Unsupported network value returns a validation error
- Network RPC unavailable or timeout may cause a failed lookup
- Address not found on specified network returns zero balances
- Payment of $0.005 USDC not settled via x402 results in 402 response

## How this service works

41 pay-per-request AI, search, headless browser, crypto alpha & memory APIs for autonomous agents settling in USDC on Base via x402 v2.

## Output

A JSON object containing the wallet's ETH balance and USDC balance as decimal strings (e.g. ethBalance: '0.15', usdcBalance: '250.00'), along with a success status and the endpoint path.

## 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",
    "queryParams"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "address"
     ],
     "properties": {
      "address": {
       "type": "string",
       "description": "EVM wallet address (0x...)"
      },
      "network": {
       "enum": [
        "mainnet",
        "sepolia"
       ],
       "type": "string",
       "default": "mainnet"
      }
     }
    }
   }
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "required": [
      "status",
      "endpoint"
     ],
     "properties": {
      "data": {
       "type": "object"
      },
      "payer": {
       "type": "string"
      },
      "status": {
       "enum": [
        "success"
       ],
       "type": "string"
      },
      "endpoint": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {
   "ethBalance": "0.15",
   "usdcBalance": "250.00"
  },
  "status": "success",
  "endpoint": "/api/crypto/wallet"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/molcloud-crypto-wallet-balance-lookup-2fa465b3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.molcloud.net](https://www.zero.xyz/host/api.molcloud.net/llms.txt)