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

How do I choose reliable Solana RPC providers for NFT data APIs?

Accepted Answer

NFT data APIs on Solana depend on RPC calls that are heavier than simple transfers: token account lookups, metadata reads, compressed NFT proofs, and log subscriptions. The provider you pick has to handle those workloads without dropping requests or hiding rate limits. This article maps the RPC methods NFT indexers actually call, the failure modes that break mint and transfer flows, and the evaluation criteria that separate a shared endpoint from a dedicated node. It also shows how to test a Solana endpoint with real JSON-RPC calls before you commit.

Question 3

How Do You Evaluate Geo-Distributed Solana RPC Services for Production?

Accepted Answer

Geo-distributed Solana RPC matters because Solana's slot times and confirmation windows are short, so the physical distance between your users, your backend, and the validator set directly shapes how fast transactions land. A single-region endpoint can look fine in a dashboard while users on other continents absorb the latency.

This article explains how to evaluate geo-distributed Solana RPC services: what to measure, how to test failover across regions, and where shared endpoints stop being enough. It also covers when a dedicated node or a managed RPC API such as OnFinality is the better fit for your workload.

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

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 6

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 7

Dedicated vs Shared Node Access for Solana RPC Providers: What Should You Compare?

Accepted Answer

Shared Solana RPC pools multiplex many applications onto the same node fleet, so you trade isolation and predictable throughput for low setup effort. Dedicated node access gives your workload its own Solana node infrastructure, which matters when you depend on consistent compute-unit budgets, WebSocket subscriptions, or large getProgramAccounts and getSignaturesForAddress calls.

This comparison walks through the operational differences, the workloads that push teams toward dedicated nodes, and the evaluation criteria to apply when choosing a Solana RPC provider. OnFinality offers both shared RPC API access and dedicated node infrastructure, so you can match the access model to your workload instead of guessing.

Question 8

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 9

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 10

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 11

What is Base Sepolia and when should you use it?

Accepted Answer

Base Sepolia is the testnet for Base, an Ethereum Layer 2 built on the OP Stack. It mirrors Base mainnet's EVM behaviour with chain ID 84532 and test ETH, so you can deploy contracts, test transactions, and rehearse upgrades without touching real funds. It is the standard staging environment for teams building on Base.

For development you can connect to a public endpoint or a managed RPC service. OnFinality provides a Base Sepolia RPC endpoint and dedicated node options, so you can move from a shared public endpoint to isolated infrastructure as your test workload grows.

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?

How do I choose reliable Solana RPC providers for NFT data APIs?

How Do You Evaluate Geo-Distributed Solana RPC Services for Production?

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

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

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

Dedicated vs Shared Node Access for Solana RPC Providers: What Should You Compare?

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 is Base Sepolia and when should you use it?

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

Never Worry about Infrastructure Again

Supported Networks

Product

Company

Resources

OnFinality RPC Assistant

RPC documentation entries

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

How do I choose reliable Solana RPC providers for NFT data APIs?

How Do You Evaluate Geo-Distributed Solana RPC Services for Production?

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

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

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

Dedicated vs Shared Node Access for Solana RPC Providers: What Should You Compare?

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 is Base Sepolia and when should you use it?

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

Never Worry about Infrastructure Again

Supported Networks

Product

Company

Resources