# Phantom API — Mantle Token Balances

> Phantom API — Mantle 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 2026-10-20).

Returns token balances for a given wallet address on the Mantle network, optionally filtered by specific contract addresses.

## Facts

- Endpoint: POST https://phantom-api-omega.vercel.app/api/mantle/token/balances?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/phantom-api-mantle-token-balances-faa430e7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_OR0J1YbNTH8SbjpiEQpEe

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-mantle-token-balances-faa430e7 -d '<json body>'
```

Example prompt: What token balances does wallet 0xAbC123...456 hold on the Mantle network, specifically for the USDC and WETH contracts?

## When to prefer this

Use this endpoint when you specifically need token balance data on the Mantle Layer 2 network. It's ideal for DeFi agents, portfolio trackers, and eligibility checks that need fast, pay-per-call on-chain data without managing RPC infrastructure. Prefer it over self-hosted RPC calls when operating across multiple networks and needing a unified interface.

## Known failure modes

- Invalid or malformed wallet address returns an error or empty result
- Contract address not found on Mantle network returns zero balance or error
- Network congestion or RPC unavailability causes timeout
- Payment not fulfilled via x402 protocol results in 402 response blocking access
- Empty contractAddresses array may return all tokens or require at least one entry depending on implementation

## 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 for the specified wallet address on the Mantle network, including token contract addresses and their corresponding balance amounts. Results may be filtered to specific contracts if provided.

## 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-mantle-token-balances-faa430e7/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)