Question 1

What is an ETH public RPC and when should you use one?

Accepted Answer

An ETH public RPC is a shared, unauthenticated JSON-RPC endpoint that lets any developer read Ethereum data and broadcast transactions without running a node. It is ideal for prototyping, wallet configuration, and low-volume scripts, but shared capacity and rate limits make it a poor fit for production workloads that need consistent throughput, archive data, or WebSocket subscriptions.

This page explains how to connect to an Ethereum public RPC, how to verify it works, and the exact signals that tell you it is time to move to a managed or dedicated endpoint. It also covers chain settings, common failure modes, and a practical migration path to OnFinality RPC when your app outgrows the public tier.

Question 2

Solana RPC Server: How to Connect, Configure, and Scale

Accepted Answer

A Solana RPC server is the HTTP and WebSocket interface your app uses to read accounts, submit transactions, and subscribe to on-chain events. This page explains what a Solana RPC server actually does, how to point your tools at one, and how to decide between a public endpoint, a managed RPC API, or a dedicated node as your workload grows.

You will find working curl and JavaScript examples, the chain settings you need for wallet and framework configuration, common failure modes such as rate limiting and slot lag, and a practical checklist for moving from a shared endpoint to dedicated Solana infrastructure when your traffic outgrows it.

Question 3

solana.io: What Developers Actually Need to Connect to Solana

Accepted Answer

solana.io is not the Solana RPC endpoint or developer portal you need. The Solana network is reached through JSON-RPC endpoints, and the practical question is which endpoint your app should point at. This article explains the domain confusion, shows the real Solana mainnet RPC and WebSocket URLs, and helps you decide between a public endpoint and dedicated node infrastructure.

You will get a working connection example, a comparison of public versus dedicated access, and a debugging path for the most common Solana RPC failures so you can move from a first request to a production-ready setup.

Question 4

What is a Base NFT API and how do you query NFT data on Base?

Accepted Answer

A Base NFT API is the set of RPC methods and indexed data services you use to read NFT ownership, metadata, and transfer history on the Base network. Standard JSON-RPC calls like eth_call, eth_getLogs, and eth_getBalance cover on-chain reads, while indexer-style APIs add pre-aggregated ownership and collection data. This article explains which approach fits which workload and how to connect reliably.

You will see how to query ERC-721 and ERC-1155 contracts directly over Base RPC, when an indexer is the better tool, and how to configure a production endpoint. OnFinality provides Base RPC API access and dedicated node infrastructure if you need consistent throughput for NFT-heavy read traffic.

Question 5

Sui Public RPC: What It Gives You and When to Move On

Accepted Answer

Sui public RPC endpoints are shared, unauthenticated JSON-RPC URLs that let you read chain state, submit transactions, and prototype against Sui mainnet or testnet without provisioning a node. They are the fastest way to get a wallet or script talking to Sui, but they are shared capacity with no account, no SLA, and no visibility into who else is using the same URL.

This page explains what a Sui public RPC endpoint can and cannot do, how to configure Sui JSON-RPC calls correctly, and the signals that tell you it is time to move to a managed RPC API or a dedicated Sui node. OnFinality provides Sui RPC through its RPC API and dedicated node offerings if you need isolated capacity and a support path.

Question 6

What can you actually do with a free Solana node endpoint?

Accepted Answer

A free Solana node endpoint is a shared RPC URL you can call without paying, usually for learning, prototyping, or low-volume scripts. It works for basic reads like getBalance and getLatestBlockhash, but shared capacity means rate limits, variable latency, and occasional failures under load.

This page explains what free Solana endpoints are good for, where they break down, and when to move to a managed or dedicated Solana RPC setup. It also shows how to test an endpoint, configure wallets, and decide whether your workload can stay free or needs a paid plan.

Question 7

Polygon Rate Limits: What They Are and How to Avoid 429 Errors

Accepted Answer

Polygon rate limits cap how many JSON-RPC requests an endpoint will accept in a given window, and when you exceed them you get HTTP 429 responses, dropped WebSocket subscriptions, or silent timeouts. Public endpoints share those caps across every caller, so a single heavy loop can stall your whole app.

This article explains how Polygon rate limiting actually behaves, how to read the 429 and retry signals, and how to choose between public endpoints, a managed RPC API, and a dedicated Polygon node based on your request volume and method mix.

Question 8

How do you evaluate the fastest Solana RPC for your workload?

Accepted Answer

There is no single fastest Solana RPC endpoint, because latency depends on where your app runs, which methods it calls, and whether it needs WebSocket or archive data. The practical approach is to measure round-trip time from your own region against the methods you actually use, then decide between shared RPC and a dedicated Solana node. OnFinality provides Solana RPC API access and dedicated node infrastructure, so you can start on shared endpoints and move to dedicated capacity when your workload demands it.

Question 9

RPC BNB: How Do You Connect to BNB Smart Chain and Pick the Right Endpoint?

Accepted Answer

This page explains what an RPC endpoint for BNB Smart Chain (BNB Chain) is, how to connect to mainnet and testnet, and how to choose between public, shared, and dedicated infrastructure. It covers chain settings, a working JSON-RPC example, WebSocket support, and the failure modes developers hit most often. Use it as a reference when wiring a wallet, backend service, or indexer to BNB Chain.

Question 10

Free Solana RPC nodes: when are they enough for your app?

Accepted Answer

Free Solana RPC nodes are public or shared endpoints that let you read chain data and submit transactions without a paid plan. They are useful for prototypes, local development, wallet setup, and low-volume scripts, but they usually come with shared capacity, request limits, and no operational guarantees. This page explains how to connect to a free Solana endpoint, what breaks first under load, and when to move to a managed or dedicated node. OnFinality offers a public Solana endpoint plus managed RPC API and dedicated node options when your workload outgrows free access.

Question 11

Base Network RPC: How Do I Connect and Which Endpoint Should I Use?

Accepted Answer

Base is an Ethereum Layer 2 built on the OP Stack, so its RPC interface is JSON-RPC compatible with Ethereum tooling. You connect by pointing a client at a Base endpoint with chain ID 8453, and most Ethereum libraries work with little or no change. The main decisions are which endpoint to use, how to handle rate limits, and how to keep requests reliable as traffic grows.

This page covers the Base mainnet and Base Sepolia chain settings, working request examples, common failure modes, and how to decide between a public endpoint, a managed RPC API, and a dedicated node. OnFinality provides Base RPC through its [RPC API service](/api-service) and [dedicated node](/dedicated-node) options.

Question 12

What does a Bittensor mining app actually need from RPC infrastructure?

Accepted Answer

A Bittensor mining app is not a single product you download. It is a stack: a miner process that registers a hotkey on a subnet, a validator or metagraph reader that tracks subnet state, and an RPC connection that lets all of those components read chain data and submit extrinsics. Most "mining app" searches are really about wiring that stack together and keeping it online.

This article maps the components, shows how to connect to Bittensor Finney over HTTP and WebSocket, and explains when a shared public endpoint is enough versus when a dedicated node or managed RPC API is the better fit for a production miner.

API Service

Dedicated Nodes

Enterprise Nodes

Indexer Services

Network Prototyping Tools

Staking & Validators

AI Agent

RPC documentation entries

What is an ETH public RPC and when should you use one?

Solana RPC Server: How to Connect, Configure, and Scale

solana.io: What Developers Actually Need to Connect to Solana

What is a Base NFT API and how do you query NFT data on Base?

Sui Public RPC: What It Gives You and When to Move On

What can you actually do with a free Solana node endpoint?

Polygon Rate Limits: What They Are and How to Avoid 429 Errors

How do you evaluate the fastest Solana RPC for your workload?

RPC BNB: How Do You Connect to BNB Smart Chain and Pick the Right Endpoint?

Free Solana RPC nodes: when are they enough for your app?

Base Network RPC: How Do I Connect and Which Endpoint Should I Use?

What does a Bittensor mining app actually need from RPC infrastructure?

Never Worry about Infrastructure Again

Supported Networks

Product

Company

Resources

Network RPC RPC Assistant

RPC documentation entries

What is an ETH public RPC and when should you use one?

Solana RPC Server: How to Connect, Configure, and Scale

solana.io: What Developers Actually Need to Connect to Solana

What is a Base NFT API and how do you query NFT data on Base?

Sui Public RPC: What It Gives You and When to Move On

What can you actually do with a free Solana node endpoint?

Polygon Rate Limits: What They Are and How to Avoid 429 Errors

How do you evaluate the fastest Solana RPC for your workload?

RPC BNB: How Do You Connect to BNB Smart Chain and Pick the Right Endpoint?

Free Solana RPC nodes: when are they enough for your app?

Base Network RPC: How Do I Connect and Which Endpoint Should I Use?

What does a Bittensor mining app actually need from RPC infrastructure?

Never Worry about Infrastructure Again

Supported Networks

Product

Company

Resources