# Phantom API — Base NFT Sales

> Phantom API — Base NFT Sales 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).

Retrieves historical NFT sales data on the Base blockchain, filterable by contract address and block range

## Facts

- Endpoint: POST https://phantom-api-omega.vercel.app/api/base/nft/sales?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-base-nft-sales-7b732c09
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_r1O21AhHOQgt8gW0-8YWc

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-base-nft-sales-7b732c09 -d '<json body>'
```

Example prompt: Pull the last 50 NFT sales for the Base contract 0xd774557b647330C91Bf44efEA3744B03fdaaA02a, ordered from most recent to oldest.

## When to prefer this

Use this endpoint when you need historical NFT sales data specifically on the Base network with block-level precision. It is ideal for auditing sales activity, analyzing volume trends, or monitoring a specific NFT smart contract over a defined block range. Prefer this over generic blockchain explorers when you need pay-per-call programmatic access without managing an RPC node.

## Known failure modes

- Invalid or malformed contractAddress returns an error or empty result
- fromBlock greater than toBlock returns empty or error
- Exceeding rate limits or payment failure returns 402 Payment Required
- Non-existent contract address returns empty sales array
- Very large block ranges may time out or return partial results

## 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 NFT sale events from the Base blockchain for the specified contract, each containing transaction details such as sale price, buyer/seller addresses, token IDs, and block numbers, paginated according to the limit parameter and sorted by the specified order.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "number"
  },
  "order": {
   "enum": [
    "asc",
    "desc"
   ],
   "type": "string"
  },
  "toBlock": {
   "type": "number"
  },
  "fromBlock": {
   "type": "number"
  },
  "contractAddress": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/phantom-api-base-nft-sales-7b732c09/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)