Question 1

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 2

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 3

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 4

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 5

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 6

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.

Question 7

What is a Smart Chain RPC URL and how do I connect to BNB Smart Chain?

Accepted Answer

A Smart Chain RPC URL is the HTTP or WebSocket endpoint your wallet, dApp, or backend uses to read BNB Smart Chain state and broadcast transactions. It carries JSON-RPC calls such as eth_blockNumber, eth_getBalance, and eth_sendRawTransaction to a node that is synced with the network.

This page covers the BNB Smart Chain mainnet and testnet settings you need for wallet configuration, gives a working curl and JavaScript example, and explains when a public endpoint is enough versus when a managed RPC API or dedicated node is the better fit for production traffic.

Question 8

Acala Liquid Staking: How LDOT Works and What to Check Before You Stake

Accepted Answer

Acala liquid staking lets you deposit DOT into Acala's staking module and receive LDOT, a transferable derivative token that keeps earning staking rewards while you use it elsewhere in DeFi. This article explains how the flow works, what LDOT represents, and the RPC and API surface you need to read staking state or build a liquid staking integration. It also covers the operational questions developers hit first: which endpoints to use, how to query exchange rates and unbonding state, and when a shared public endpoint is enough versus when a dedicated node fits better.

Question 9

PublicNode Solana RPC Endpoint: How to Connect and What to Expect

Accepted Answer

PublicNode offers free Solana RPC endpoints for developers who want to test applications without committing to paid infrastructure. This article explains how to find and use the PublicNode Solana RPC endpoint, what rate limits and reliability to expect, and when to move to a managed or dedicated RPC provider like OnFinality for production workloads.

Question 10

What Is Kilt Mashnet and How Do You Connect to It?

Accepted Answer

Kilt Mashnet is the permissionless mainnet of the Kilt blockchain, designed for decentralized identity (DID) and verifiable credentials. This article explains what Mashnet is, how it differs from the Kilt Peregrine testnet, and how to connect your dApp or wallet to the network using RPC endpoints.

You'll find the official chain settings, configuration examples for common tools, and guidance on choosing an RPC provider for production traffic. Whether you're building identity solutions or just need a reliable endpoint, this page helps you get started quickly.

Question 11

How do I use the Solana explorer API to inspect transactions and accounts?

Accepted Answer

The Solana explorer API is the JSON-RPC interface that powers block explorers and lets developers query transactions, accounts, and blocks. This article explains how to use it for debugging and analytics, and how to choose a reliable RPC provider for production workloads.

Question 12

Polygon RPC List: Mainnet and Amoy Endpoints for Developers

Accepted Answer

Find the official Polygon RPC endpoints for mainnet and Amoy testnet, including HTTPS and WebSocket URLs. Learn how to choose between public, managed, and dedicated RPC providers based on your application's needs, and get configuration examples for wallets and developers.

API Service

Dedicated Nodes

Enterprise Nodes

Indexer Services

Network Prototyping Tools

Staking & Validators

AI Agent

RPC documentation entries

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

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

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?

What is a Smart Chain RPC URL and how do I connect to BNB Smart Chain?

Acala Liquid Staking: How LDOT Works and What to Check Before You Stake

PublicNode Solana RPC Endpoint: How to Connect and What to Expect

What Is Kilt Mashnet and How Do You Connect to It?

How do I use the Solana explorer API to inspect transactions and accounts?

Polygon RPC List: Mainnet and Amoy Endpoints for Developers

Never Worry about Infrastructure Again

Supported Networks

Product

Company

Resources

Network RPC RPC Assistant

RPC documentation entries

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

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

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?

What is a Smart Chain RPC URL and how do I connect to BNB Smart Chain?

Acala Liquid Staking: How LDOT Works and What to Check Before You Stake

PublicNode Solana RPC Endpoint: How to Connect and What to Expect

What Is Kilt Mashnet and How Do You Connect to It?

How do I use the Solana explorer API to inspect transactions and accounts?

Polygon RPC List: Mainnet and Amoy Endpoints for Developers

Never Worry about Infrastructure Again

Supported Networks

Product

Company

Resources