# BaseNFT Oracle x402 - Floor Price Lookup

> BaseNFT Oracle x402 - Floor Price Lookup is a paid API for AI agents from basenft-x402.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-19).

Returns real-time floor price (in ETH and USD) and collection metadata for a named Base mainnet NFT collection

## Facts

- Endpoint: GET https://basenft-x402.vercel.app/v1/floor
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/basenft-oracle-x402-floor-price-lookup-4b66caad
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_X4AaNyy6hx9el2zI4G5WB

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 basenft-oracle-x402-floor-price-lookup-4b66caad
```

Example prompt: What's the current floor price in ETH and USD for the Basenames NFT collection on Base mainnet?

## When to prefer this

Choose this endpoint when you need real-time NFT floor price data specifically from the Base mainnet ecosystem — particularly for collections like Basenames. It is ideal for agents monitoring NFT prices, building portfolio dashboards, or verifying collection metadata on Base without needing a full-featured NFT marketplace API.

## Known failure modes

- Unknown or unsupported collection slug returns an error object with success: false
- Collection name exceeding 64 characters or being empty triggers a validation error
- Network or oracle downtime may result in a failed response
- Newly launched collections with no sales may have no floor price data
- Misspelled collection names return error rather than a fuzzy match

## How this service works

Real-Time Base NFT Collection, Floor Price & Ownership Verification Oracle on Base Mainnet.

## Output

Returns a JSON object with the NFT collection's contract address, collection name, total token supply, floor price in ETH, and floor price in USD — all sourced in real time from Base mainnet.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "queryParams"
   ],
   "properties": {
    "type": {
     "const": "http"
    },
    "method": {
     "const": "GET"
    },
    "queryParams": {
     "type": "object",
     "title": "CollectionRequest",
     "properties": {
      "collection": {
       "type": "string",
       "title": "Collection",
       "default": "basenames",
       "maxLength": 64,
       "minLength": 1
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "properties": {
    "type": {
     "const": "json"
    },
    "example": {
     "type": "object",
     "properties": {
      "error": {
       "type": "object"
      },
      "success": {
       "const": false
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "address": {
   "type": "string"
  },
  "collection": {
   "type": "string"
  },
  "total_supply": {
   "type": "integer"
  },
  "floor_price_eth": {
   "type": "number"
  },
  "floor_price_usd": {
   "type": "number"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/basenft-oracle-x402-floor-price-lookup-4b66caad/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from basenft-x402.vercel.app](https://www.zero.xyz/host/basenft-x402.vercel.app/llms.txt)