# Phantom API — Ethereum NFTs by Owner

> Phantom API — Ethereum NFTs 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 2026-10-12).

Returns all NFTs held by a given Ethereum wallet address, with optional pagination

## Facts

- Endpoint: POST https://phantom-api-omega.vercel.app/api/ethereum/nft/by-owner?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/phantom-api-ethereum-nfts-by-owner-2b3b5a3d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0hDOh_OxOXRqKkZo4XNmV

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-ethereum-nfts-by-owner-2b3b5a3d -d '<json body>'
```

Example prompt: Show me all the NFTs owned by Ethereum wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045, and return up to 50 results.

## When to prefer this

Use this endpoint when you need a fast, pay-per-call lookup of NFT holdings for a specific Ethereum wallet address without managing your own blockchain node or indexer. It is well-suited for spot queries on individual wallets, NFT-gating checks, or building portfolio views without a subscription commitment.

## Known failure modes

- Invalid or malformed owner address returns an error or empty result
- Non-Ethereum addresses (e.g. Solana, Bitcoin) are not supported by this endpoint
- Expired or invalid pageKey causes pagination failure
- Exceeding rate limits or missing payment header results in 402 Payment Required
- Wallets with no NFTs return an empty list

## 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

A list of NFTs owned by the specified Ethereum address, including token identifiers, contract addresses, metadata, and a pagination key for retrieving additional results if the collection 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-ethereum-nfts-by-owner-2b3b5a3d/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)