# Phantom API — ZKsync NFT by Owner

> Phantom API — ZKsync 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 2026-10-16).

Fetches all NFTs owned by a given wallet address on the ZKsync network, with pagination support.

## Facts

- Endpoint: POST https://phantom-api-omega.vercel.app/api/zksync/nft/by-owner?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/phantom-api-zksync-nft-by-owner-c407fac0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9J8K-ga3iritqsDH7-AZ7

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-zksync-nft-by-owner-c407fac0 -d '<json body>'
```

Example prompt: Can you fetch all the NFTs owned by the ZKsync wallet 0x1234...abcd — show me up to 50 results?

## When to prefer this

Choose this endpoint when you specifically need NFT ownership data on the ZKsync (Layer 2) network and want pay-per-call pricing without API key subscriptions. Prefer it over general NFT APIs when ZKsync coverage and low per-call cost ($0.01 USDC) are priorities.

## Known failure modes

- Invalid or malformed owner address returns an error
- No NFTs found for the address returns an empty list
- Invalid pageKey causes pagination failure
- Rate limiting or payment failure (x402) if USDC balance is insufficient
- ZKsync network RPC outage causing data unavailability

## 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 NFTs owned by the specified wallet on the ZKsync network, including token IDs, contract addresses, and metadata, along with a pagination key for fetching additional results.

## 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-zksync-nft-by-owner-c407fac0/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)