# Phantom API — Worldchain NFT Metadata Lookup

> Phantom API — Worldchain 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 2026-09-14).

Fetches on-chain NFT metadata for a given token ID and contract address on the World Chain network.

## Facts

- Endpoint: POST https://phantom-api-omega.vercel.app/api/worldchain/nft/metadata
- 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-worldchain-nft-metadata-lookup-e07b1e1b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_RTeKzIg16eWbAXn-TC5ym

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-worldchain-nft-metadata-lookup-e07b1e1b -d '<json body>'
```

Example prompt: Can you pull up the on-chain metadata for token ID 1234 from World Chain NFT contract 0xAbC123...? I want to see its name, image, and traits.

## When to prefer this

Use this endpoint when you need fast, pay-per-call NFT metadata retrieval specifically on the World Chain network without managing your own RPC infrastructure. Prefer it over generic blockchain RPC calls when you want a clean REST interface and are operating in a Web3 agent context that supports x402 micropayments.

## Known failure modes

- Invalid or non-existent contract address returns an error or empty response
- Token ID does not exist within the contract (out-of-range) returns a not-found error
- Contract is not an NFT contract (no ERC-721/1155 metadata standard) may return malformed or empty data
- World Chain node unavailability causes timeout or 503 error
- Malformed input (missing tokenId or contractAddress) returns a 400 validation error
- Payment not fulfilled (x402 flow) results in 402 Payment Required response

## 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 NFT metadata for the specified token on World Chain, typically including the token name, description, image URL, animation URL, external URL, and an array of trait/attribute key-value pairs as stored on-chain or in the token URI.

## 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-worldchain-nft-metadata-lookup-e07b1e1b/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)