RPC documentation entries
Explore practical RPC guides for developers, builders, and teams creating reliable Web3 applications and growing blockchain ecosystems with OnFinality.
Arbitrum Endpoint: Chain Settings, RPC URLs, and Debugging
This page explains what an Arbitrum endpoint is, how to connect to Arbitrum One and Arbitrum Sepolia, and how to choose between public RPC, dedicated nodes, and API services. It co...
What dedicated node access features should Solana developers look for?
Dedicated Solana RPC nodes give your dApp exclusive access to a single node instance, avoiding the noisy-neighbor effects of shared endpoints. Key features to evaluate include dedi...
What Is a Solana Free API and How Do You Use It?
A Solana free API lets developers read and write to the Solana blockchain without paying for node infrastructure. Public endpoints are great for prototyping, but they often have ra...
What is the Scroll endpoint and how do I connect to it?
The Scroll endpoint is the JSON-RPC API for the Scroll Ethereum Layer 2 network. This page explains what the Scroll endpoint is, how to configure your wallet or dApp, and how to ch...
What is the SORA API and how do you use it for dApps?
The SORA API refers to the RPC endpoints and JSON-RPC methods that let applications read and write data on the SORA network. This article explains what the SORA API is, how to conn...
What is a Starknet node and how do you run or connect to one?
A Starknet node is software that syncs with the Starknet network, validates state transitions, and serves JSON-RPC requests for dApps and indexers. Running a full node gives you di...
What is Crust Network and how does it provide decentralized storage?
Crust Network is a Substrate-based layer 1 blockchain that adds an incentive and service layer to IPFS, enabling decentralized, verifiable, and permanent storage. It offers an on-c...
Polygon Node RPC: Endpoints, Chain Settings, and Provider Selection
Polygon node RPC endpoints let applications read and write data on the Polygon network using the standard JSON-RPC interface. This page covers the mainnet and Amoy testnet chain se...
What is the Kaia API and how do you connect to it?
The Kaia API is the JSON-RPC interface for the Kaia blockchain, an EVM-compatible Layer 1 network. It lets you read chain data, send transactions, and interact with smart contracts...
Kusama Migration: What Changed and How to Update Your RPC Endpoints
The Kusama migration moved core functionality from the Relay Chain to Asset Hub, changing how developers connect to the network. This guide explains what changed, how to update you...
Composable RPC: Endpoints, Dedicated Nodes, and Integration Guide
Composable Finance is a cross-chain DeFi infrastructure project that enables trustless interoperability across ecosystems like Ethereum, Polkadot, Kusama, Cosmos, and NEAR. This gu...
Sonic Network RPC: Chain Settings, Endpoints, and Provider Selection
Sonic is a high-performance EVM Layer-1 blockchain with sub-second finality. This page covers the official Sonic network RPC settings, how to connect your wallet or dApp, and how t...
Ethereum
Solana
Polygon
Base
Arbitrum
BNB Chain
Polkadot
Optimism
