EOS (EOS) API Documentation

EOS

EOS (EOS) is an Antelope-based Layer 1 smart contract network using delegated proof of stake; the same chain was rebranded as Vaulta in 2025, with its native utility token transitioning from EOS to A. Native contracts are commonly written in C++ and compiled to WebAssembly, while nodes execute transactions and maintain account, permission, contract-table, resource, and block state. This WebAssembly and account-table model differs from EVM chains, so native applications rely on EOS-specific account, action, table, and transaction abstractions.

EOS API Methods and Endpoints

NOWNodes exposes EOS's interface, plus a few others, depending on what your integration needs: the native Chain API for reading blockchain state, querying accounts and contract tables, and submitting transactions.

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