# Phantom API — World Chain NFT Floor Price

> Phantom API — World Chain NFT Floor Price 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 2026-09-15).

Returns the current NFT collection floor price on World Chain for a given contract address

## Facts

- Endpoint: POST https://phantom-api-omega.vercel.app/api/worldchain/nft/floor-price
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/phantom-api-world-chain-nft-floor-price-1e3ce87a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SsSEvKKZOd4WDCdZvfMKJ

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-world-chain-nft-floor-price-1e3ce87a -d '<json body>'
```

Example prompt: What's the current NFT floor price for the collection at contract address 0xAbC123... on World Chain?

## When to prefer this

Choose this endpoint when you need the NFT floor price specifically on the World Chain network. It is a pay-per-call endpoint ($0.01 USDC) with no subscription required, making it suitable for on-demand agent queries without managing API keys. Prefer this over general NFT aggregators when World Chain-specific data is required.

## Known failure modes

- Invalid or malformed contract address returns an error
- Contract address exists on a different chain but not World Chain — returns no data
- Collection has no active listings, so no floor price is available
- Rate limiting or payment failure via x402 protocol returns 402 Payment Required
- Vercel cold start may add latency on first call

## 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 current floor price for the specified NFT collection on World Chain, including the minimum listed price denominated in the native token or a supported currency, derived from live on-chain or marketplace data.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/phantom-api-world-chain-nft-floor-price-1e3ce87a/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)