VeChain (VET) API Documentation

VeChain

VeChain (VET) is an EVM-compatible Layer 1 secured by Delegated Proof of Stake since the Hayabusa mainnet upgrade activated on December 2, 2025. Solidity contracts execute as EVM bytecode against account-based state, while full nodes validate blocks and transactions and maintain balances, contract code, storage, receipts, logs, and validator-related state. Because VeChain preserves EVM execution semantics while using its own transaction and consensus design, developers can reuse Ethereum contract tooling while also handling VeChain-native transaction structures and protocol data.

VeChain API Methods and Endpoints

NOWNodes exposes VeChain's interface, plus a few others, depending on what your integration needs: its native RPC for reading chain state and broadcasting transactions, WSS (WebSocket) for real-time subscriptions and events, and Trace/Debug for step-level execution analysis. Archive mode extends any of these to historical states and data beyond standard retention.

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