# Phantom API – SEI NFT by Owner

> Phantom API – SEI 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 2026-09-14).

Fetches all NFTs owned by a specific wallet address on the SEI blockchain network

## Facts

- Endpoint: POST https://phantom-api-omega.vercel.app/api/sei/nft/by-owner
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/phantom-api-sei-nft-by-owner-594f6a85
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_j2NNu4MND9VIBGZyDWISf

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-sei-nft-by-owner-594f6a85 -d '<json body>'
```

Example prompt: List all NFTs owned by the SEI wallet address sei1abc123xyz… and show me up to 50 results.

## When to prefer this

Use this endpoint when you specifically need NFT ownership data on the SEI blockchain. It is ideal for wallet portfolio lookups, airdrop eligibility checks, game inventory reads, or any agent workflow that needs to enumerate NFTs held by a given SEI address. Prefer this over generic NFT APIs if your target chain is SEI, as it provides SEI-native on-chain data at a low per-call cost via x402 micropayments.

## Known failure modes

- Invalid or malformed SEI wallet address returns an error or empty result
- Non-existent address returns an empty NFT list
- Expired or invalid pageKey causes pagination errors
- Rate limiting or payment failure (402) blocks the request
- SEI network node unavailability causes timeout or 5xx 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

Returns a list of NFTs owned by the specified wallet on the SEI network, including token identifiers, collection details, and NFT metadata. Also returns a pagination key (pageKey) to fetch 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-sei-nft-by-owner-594f6a85/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)