# Phantom API — Mantle NFT by Owner

> Phantom API — Mantle NFT by Owner 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).

Retrieves all NFTs owned by a given wallet address on the Mantle blockchain network

## Facts

- Endpoint: POST https://phantom-api-omega.vercel.app/api/mantle/nft/by-owner?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-nft-by-owner-d1b4fc45
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XgLGsxzLfJHpwpEWcNUBY

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-nft-by-owner-d1b4fc45 -d '<json body>'
```

Example prompt: Can you pull up all the NFTs owned by the Mantle wallet 0x1234...abcd? Show me up to 20 results.

## When to prefer this

Use this endpoint when you specifically need NFT holdings data for a wallet on the Mantle blockchain network. Prefer this over generic Web3 providers when you need pay-per-call pricing without a subscription, or when querying Mantle specifically rather than Ethereum mainnet or other EVM chains.

## Known failure modes

- Invalid or malformed wallet address returns an error or empty result
- Network unavailability or Mantle RPC issues may cause timeouts
- Exceeding rate limits or invalid payment may result in 402 or 429 responses
- An invalid pageKey may return an error or restart pagination
- Very large NFT portfolios may require multiple paginated calls

## 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 NFT assets owned by the specified wallet address on the Mantle network, including token metadata and a pagination key for fetching subsequent pages when the result set exceeds the requested limit.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "number"
  },
  "owner": {
   "type": "string"
  },
  "pageKey": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/phantom-api-mantle-nft-by-owner-d1b4fc45/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)