# Phantom API — zkSync NFT Floor Price

> Phantom API — zkSync 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 floor price for a given NFT collection contract on the zkSync network

## Facts

- Endpoint: POST https://phantom-api-omega.vercel.app/api/zksync/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-zksync-nft-floor-price-e76c02e9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9WWgRPyHrnIvG2T3iomu2

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-floor-price-e76c02e9 -d '<json body>'
```

Example prompt: What's the current floor price for the NFT collection at contract address 0x3a4d... on zkSync?

## When to prefer this

Use this endpoint when you specifically need NFT floor price data on the zkSync (zkSync Era) network and want a pay-per-call model with no subscription commitment. Prefer this over general-purpose NFT APIs when zkSync-specific data is required and cost control via micro-payments is important.

## Known failure modes

- Invalid or malformed contract address returns an error
- Contract address not found on zkSync returns null or empty result
- Network congestion or RPC node outage may delay or fail the response
- Non-NFT contract addresses may return no floor price data
- Rate limiting or payment failure (x402) prevents the call from completing

## 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 of the specified NFT collection on the zkSync network, typically including the minimum listing price in the native or relevant token unit.

## 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-zksync-nft-floor-price-e76c02e9/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)