Avalanche (AVAX) API Documentation

Avalanche

Avalanche (AVAX) is a proof-of-stake Layer 1 platform whose Primary Network uses Snowman++ consensus across the P-Chain, C-Chain, and X-Chain. On the C-Chain, Solidity contracts compile to EVM bytecode and use Ethereum-style account state, while AvalancheGo full nodes validate Primary Network transactions and persist C-Chain state alongside P-Chain and X-Chain data. This multi-chain architecture combines an EVM execution surface with Avalanche-specific platform and asset models, so applications may rely on both Ethereum-compatible and native Avalanche interfaces.

Avalanche API Methods and Endpoints

NOWNodes exposes Avalanche's interface, plus a few others, depending on what your integration needs: JSON-RPC for reading chain state and broadcasting transactions, WSS (WebSocket) for real-time subscriptions and events, and Blockbook for indexed address, balance, transaction, and block lookups.

Browse the interfaces below for endpoint details, request parameters, response formats, and integration examples. Create an API key, select Mainnet or Testnet, choose the required interface, and start sending requests from your application.

Weighing Avalanche RPC providers against each other? Read the comparison guide on our blog — this page stays focused on integration reference.