Nownodes API - Complete Developer Guide
API Provider: Nownodes
Website: nownodes.io
Overview
Nownodes provides high-performance blockchain node infrastructure and explorer APIs. They offer a unified API to access 50+ blockchains, making it easy for developers to build multi-chain applications without managing infrastructure.
Pricing Plans
| Plan | Price | Requests/month |
|---|---|---|
| Free Trial | $0 | 5,000 |
| Starter | $49/mo | 100,000 |
| Professional | $199/mo | 1,000,000 |
| Enterprise | Custom | Unlimited |
Supported Blockchains
Nownodes supports 50+ blockchains including:
Bitcoin
Ethereum
BNB Chain
Solana
Polygon
Avalanche
Arbitrum
Optimism
Base
Fantom
Toncoin
NEAR
API Endpoint Example
curl -X GET "https://btc.nownodes.io/api/v2/address/balance/1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa" \
-H "api-key: YOUR_API_KEY"Key Features
- 50+ Blockchains: One API key for all supported chains
- High Performance: 99.9% uptime SLA
- Explorer APIs: Block, transaction, address queries
- WebSocket Support: Real-time notifications
- Unified API: Same interface across chains
Best Use Cases
- Multi-chain wallet applications
- Blockchain explorers
- DeFi dashboards
- NFT marketplaces
- Custody solutions