# DopamineDesk EVM Balance Lookup

> DopamineDesk EVM Balance Lookup is a paid API for AI agents from ai-data-marketplace-1042299154756.us-central1.run.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).

Returns the native token balance (ETH) of any EVM wallet or contract address on Base, Ethereum, or Arbitrum at a given block.

## Facts

- Endpoint: GET https://ai-data-marketplace-1042299154756.us-central1.run.app/api/v1/evm_balance
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dopaminedesk-evm-balance-lookup-b70f9717
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AVMlltYwcDEO9lRPLnR26

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 dopaminedesk-evm-balance-lookup-b70f9717
```

Example prompt: What's the current ETH balance of 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Base — show me both the wei amount and the human-readable value.

## When to prefer this

Choose this endpoint when you need a quick, cheap ($0.001 USDC) on-chain native token balance check across Base, Ethereum, or Arbitrum without setting up your own RPC node. It is ideal for agents doing pre-flight funding checks, due diligence on wallets, or auditing contract holdings. It supports historical queries by block height, making it useful for point-in-time accounting.

## Known failure modes

- Invalid or malformed EVM address returns an error or success:false
- Unsupported chain value (anything other than base, ethereum, arbitrum) may return an error
- Invalid block tag or height that doesn't exist on the specified chain
- Network RPC downtime may cause timeouts or empty responses
- Address with zero balance returns success:true with balance_wei '0' and balance_formatted '0.0'

## How this service works

Read an address's native balance directly from Base, Ethereum, or Arbitrum at a selected block tag or height.

## Output

A JSON object containing: success (boolean), network (e.g. 'base'), asset (e.g. 'ETH'), balance_wei (raw balance as a string integer), and balance_formatted (human-readable decimal string). Example: {success: true, network: 'base', asset: 'ETH', balance_wei: '1500000000000000000', balance_formatted: '1.5'}.

## 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": {
      "block": {
       "type": "string",
       "description": "Block tag or height; defaults to latest."
      },
      "chain": {
       "type": "string",
       "description": "base, ethereum, or arbitrum; defaults to base."
      },
      "address": {
       "type": "string",
       "description": "EVM wallet or contract address."
      }
     },
     "additionalProperties": true
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "success",
      "network",
      "asset",
      "balance_wei",
      "balance_formatted"
     ],
     "properties": {
      "asset": {
       "type": "string"
      },
      "network": {
       "type": "string"
      },
      "success": {
       "type": "boolean"
      },
      "balance_wei": {
       "type": "string"
      },
      "balance_formatted": {
       "type": "string"
      }
     },
     "additionalProperties": true
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "asset": "ETH",
  "network": "base",
  "success": true,
  "balance_wei": "0",
  "balance_formatted": "0.0"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/dopaminedesk-evm-balance-lookup-b70f9717/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ai-data-marketplace-1042299154756.us-central1.run.app](https://www.zero.xyz/host/ai-data-marketplace-1042299154756.us-central1.run.app/llms.txt)