# Arc Wallet Balance in USD

> Arc Wallet Balance in USD is a paid API for AI agents from apexfaucet.xyz, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-17).

Returns live token balances with USD valuations for any Arc wallet, including USDC, EURC, APEX, and up to 20 additional tokens priced from Uniswap v4 pools.

## Facts

- Endpoint: GET https://apexfaucet.xyz/api/x402/arc-wallet?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/arc-wallet-balance-in-usd-f241d491
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_GfLqGipSF_Ounixf7C1Qj

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 arc-wallet-balance-in-usd-f241d491
```

Example prompt: What is the total USD value of the Arc wallet 0x1234567890abcdef1234567890abcdef12345678 right now, including its USDC, EURC, and APEX balances?

## When to prefer this

Choose this endpoint when you need a live, USD-denominated snapshot of a full Arc wallet's holdings — especially when you want USDC, EURC, and APEX included automatically alongside arbitrary ERC-20 tokens, and you need honest pool-availability signals rather than silent $0 values for unpriced tokens. Prefer it over generic token price endpoints when you need wallet-level aggregation in one call.

## Known failure modes

- Invalid or malformed wallet address (not a valid 0x 20-byte hex) returns an error before payment is charged
- Token with no Uniswap v4 USDC pool reports missing pool status instead of $0 to avoid silent mispricing
- Multicall3 read failure on-chain results in a refused/error response
- More than 20 custom tokens specified may be truncated or rejected
- Network congestion on Arc may cause slower or failed reads

## How this service works

Free APEX on X1, and free USDC plus APEX on Arc, three times a day. No gas, no sign-up. Plus a swap, a screener, APEX City and token checks.

## Output

A JSON object with a breakdown per token (balance, USD price sourced from the deepest Uniswap v4 USDC pool, and USD value), a flag if a token has no pricing pool, and the wallet's total USD value summed across all tokens. Always includes USDC, EURC, and APEX; up to 20 additional tokens can be included via query parameter.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "queryParams"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "address"
     ],
     "properties": {
      "address": {
       "type": "string",
       "pattern": "^0x[0-9a-fA-F]{40}$",
       "description": "Arc wallet address."
      }
     }
    }
   }
  },
  "output": {
   "type": "object"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "schema": {
  "type": "object",
  "properties": {
   "ok": {
    "type": "boolean"
   },
   "data": {
    "type": "object"
   },
   "paid": {
    "type": "number"
   }
  }
 },
 "example": {
  "ok": true,
  "data": {
   "ok": true,
   "usdc": {
    "note": "native USDC (the gas token); the same balance shows through the ERC-20 interface…",
    "balance": 0.4457706550485896
   },
   "block": 25139326,
   "chain": "Arc mainnet (5042)",
   "method": "Balances read live (getBalance + Multicall3 balanceOf/decimals/symbol). USD valu…",
   "tokens": [
    {
     "token": "0x59933f316417c89d9dc5107b30f08c99b774ea9d",
     "symbol": "APEX",
     "balance": 1737911.531942986,
     "decimals": 9,
     "usdPrice": 0.00002318672117375561,
     "usdValue": 40.29647,
     "warnings": [],
     "liquidityUsdEstimate": 27.5
    }
   ],
   "address": "0x024b82335c29fa5606a8ea5c1d24fc9ead50700c",
   "totalUsd": 40.742241,
   "unpriced": 0
  },
  "paid": 0.002
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/arc-wallet-balance-in-usd-f241d491/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from apexfaucet.xyz](https://www.zero.xyz/host/apexfaucet.xyz/llms.txt)