Top NFT Marketplace APIs
OpenSea API
The largest NFT marketplace. Great for exploring collections and floor prices.
- Free Tier: Limited (5 requests/sec)
- Paid Plans: From $5/1000 API calls
- Networks: Ethereum, Polygon, Solana, Klaytn
- Best For: Collection analytics, floor prices
Reservoir
Aggregates data from multiple marketplaces. Great for floor price and routing.
- Free Tier: 10K requests/month
- Paid Plans: Custom pricing
- Networks: Ethereum, Solana, Polygon, Base
- Best For: Cross-marketplace data, routing
SimpleHash
Comprehensive NFT data API with metadata and image hosting.
- Free Tier: 5K requests/month
- Paid Plans: From $99/mo
- Networks: 30+ chains
- Best For: Multi-chain NFT indexing
Alchemy NFT API
Enterprise-grade NFT data with ownership and transfer tracking.
- Free Tier: Included with Alchemy account
- Paid Plans: From $49/mo
- Networks: Ethereum, Polygon, Solana, Arbitrum
- Best For: Large-scale NFT applications
QuickNode NFT API
Fast NFT API with real-time updates and filtering.
- Free Tier: 50K requests/day
- Paid Plans: From $49/mo
- Networks: Ethereum, Solana, Polygon, BSC
- Best For: High-performance NFT apps
Comparison Table
| API | Free Tier | Networks | Best For |
|---|---|---|---|
| OpenSea | Limited | 4 chains | Collection data |
| Reservoir | 10K/mo | 4 chains | Routing |
| SimpleHash | 5K/mo | 30+ chains | Multi-chain |
| Alchemy | Yes | 4 chains | Enterprise |
| QuickNode | 50K/day | 4 chains | Speed |
Building NFT Marketplace Features
Essential Features
- NFT Browsing: Display collections with filtering and sorting
- Collection Stats: Floor price, volume, holders
- Ownership Lookup: Check wallet NFT holdings
- Transaction History: Past sales and transfers
- Real-time Updates: WebSocket for new mints/sales
- Metadata Fetching: NFT images and attributes
Solana NFT APIs
Helius
Fast Solana RPC with enhanced NFT APIs.
- Free Tier: 10M credits/month
- Best For: Solana NFT applications
QuickNode (Solana)
High-performance Solana RPC with NFT indexing.
- Free Tier: 50K requests/day
- Best For: Production Solana dApps