# Phantom API — opBNB Token Balances

> Phantom API — opBNB Token Balances is a paid API for AI agents from phantom-api-omega.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Fetches ERC-20 and native token balances for a given wallet address on the opBNB network, optionally filtered by specific contract addresses

## Facts

- Endpoint: POST https://phantom-api-omega.vercel.app/api/opbnb/token/balances
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/phantom-api-opbnb-token-balances-fee1012b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_mZlASzbj_BmbUq9IdYLOE

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 phantom-api-opbnb-token-balances-fee1012b -d '<json body>'
```

Example prompt: What tokens does wallet 0xAbC123...def hold on opBNB right now? Check for USDT and USDC specifically at contract addresses 0xDai... and 0xUSDC....

## When to prefer this

Choose this endpoint when you specifically need token balance data on the opBNB (BNB Layer 2) network and want pay-per-call pricing via x402 without a subscription. Prefer it over general blockchain RPC calls when you need aggregated multi-token balances in one request rather than polling individual contracts. Best for agents that need lightweight, on-demand opBNB portfolio lookups across 57+ supported networks under the same provider.

## Known failure modes

- Invalid or malformed wallet address returns an error or empty result
- Non-existent contract address may return zero balance or error
- opBNB network downtime or RPC unavailability causes timeout
- Rate limiting or payment failure (x402) blocks the request
- Wallet with no token activity returns empty array

## How this service works

Lightning-fast access to blockchain data, smart contract insights, and Web3 infrastructure across 57+ networks. Pay-per-call via x402.

## Output

Returns a list of token balances associated with the specified owner wallet on the opBNB network. Each entry typically includes the token contract address, token symbol or name, raw balance amount, and decimals. If specific contract addresses are provided, results are scoped to those tokens only.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "owner": {
   "type": "string"
  },
  "contractAddresses": {
   "type": "array",
   "items": {
    "type": "string"
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/phantom-api-opbnb-token-balances-fee1012b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from phantom-api-omega.vercel.app](https://www.zero.xyz/host/phantom-api-omega.vercel.app/llms.txt)