# Phantom API — Unichain NFT by Owner

> Phantom API — Unichain 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 2026-10-13).

Returns all NFTs owned by a given wallet address on the Unichain network, with pagination support

## Facts

- Endpoint: POST https://phantom-api-omega.vercel.app/api/unichain/nft/by-owner?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/phantom-api-unichain-nft-by-owner-afa51e36
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_nyivLFlndkfiUOnjbTACw

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-unichain-nft-by-owner-afa51e36 -d '<json body>'
```

Example prompt: Show me up to 20 NFTs owned by wallet 0xAbc123...def456 on Unichain.

## When to prefer this

Choose this endpoint when you need fast, pay-per-call NFT ownership lookups specifically on the Unichain network without committing to a subscription. Ideal for agents that occasionally need to audit wallet NFT holdings, power token-gating checks, or build NFT galleries with paginated on-chain data. Prefer this over generic RPC calls when you want a structured, indexed NFT ownership response rather than raw blockchain data.

## Known failure modes

- Invalid or malformed wallet address returns an error or empty result
- Unichain network outages may cause timeouts or 5xx errors
- Payment failure via x402 if USDC balance is insufficient
- Pagination key mismatch or expiry may return incorrect pages
- Empty array returned for wallets with no NFTs on Unichain (not an error)

## 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 wallet address on Unichain, including token identifiers and associated metadata, plus a pagination key to retrieve subsequent pages if more results exist.

## 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-unichain-nft-by-owner-afa51e36/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)