# Phantom API — SEI NFT Metadata Lookup

> Phantom API — SEI NFT Metadata Lookup 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).

Fetches NFT metadata for a given token ID and contract address on the SEI blockchain network

## Facts

- Endpoint: POST https://phantom-api-omega.vercel.app/api/sei/nft/metadata?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-sei-nft-metadata-lookup-95c8f6e5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_peZjHe582HzNlTyHjWYPQ

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-metadata-lookup-95c8f6e5 -d '<json body>'
```

Example prompt: Can you pull the metadata for token ID 4521 on SEI NFT contract address 0xABC123... — I want to see its name, image, and traits?

## When to prefer this

Choose this endpoint when you need to retrieve NFT metadata specifically on the SEI blockchain and want pay-per-call access without a subscription. It is best suited for spot lookups of individual tokens by contract address and token ID. Prefer this over general-purpose NFT APIs when your use case is SEI-native and you want lightweight, low-cost, on-demand resolution rather than bulk indexing.

## Known failure modes

- Invalid or nonexistent contract address returns an error or empty response
- Token ID not found on the specified contract returns a not-found error
- SEI network connectivity issues cause timeout or service unavailability
- Malformed input (wrong type for tokenId or contractAddress) returns a validation error
- NFT metadata hosted off-chain (e.g. IPFS) may be unresolvable if the gateway is down

## 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 the on-chain NFT metadata associated with the specified token ID and contract address on the SEI network, typically including fields such as the token name, description, image URL, and a list of trait/attribute key-value pairs as defined in the NFT's metadata standard.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "tokenId": {
   "type": "string"
  },
  "contractAddress": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/phantom-api-sei-nft-metadata-lookup-95c8f6e5/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)