Question 1

BNB API: BSC JSON-RPC Methods and Endpoint Setup

Accepted Answer

The BNB Smart Chain (BSC) JSON-RPC API is the standard interface for reading chain state and submitting transactions. You connect a client to an HTTP or WebSocket endpoint, then call methods such as eth_blockNumber, eth_getBalance, eth_call, and eth_sendRawTransaction. This page covers the chain settings you need, the methods most applications actually use, and how to wire up an endpoint without breaking production.

Use it as a working reference: copy the network configuration, test a few calls with curl, then decide whether a shared public endpoint or a dedicated node fits your workload. OnFinality provides BSC RPC API access and dedicated BNB Chain nodes, and you can compare options across supported networks before you commit.

Question 2

What is the BNBChain list and how do BNB Smart Chain and application sidechains fit together?

Accepted Answer

The BNBChain list is a reference to the BNB Chain ecosystem, which includes BNB Smart Chain (BSC) as the EVM-compatible execution layer and a set of application sidechains and Layer 2 networks built around it. Developers use this list to find chain IDs, RPC endpoints, explorers, and bridge details before connecting wallets, indexers, or backend services.

This page explains how to read that list, how to connect to BNB Smart Chain and its testnet, and how to decide between public endpoints and dedicated node infrastructure for production workloads.

Question 3

BNB Smart Chain RPC Quickstart: Endpoint, Chain ID, and First Calls

Accepted Answer

This quickstart shows how to connect an application to BNB Smart Chain over JSON-RPC. It covers the mainnet chain ID (56), the native BNB token, the BscScan explorer, wallet network configuration, and the first read calls most developers make: chain ID, block number, balance, and logs. You can point a wallet or script at a public endpoint to get moving, then move to a managed or dedicated endpoint as traffic and indexing needs grow. OnFinality provides BNB Smart Chain RPC through its API service and dedicated node options, with the same JSON-RPC methods you already use. The goal is a working connection in minutes, plus the settings and debugging steps you need when something fails.

Question 4

Alchemy BNB Smart Chain RPC: How to Evaluate and Configure a BSC Endpoint

Accepted Answer

Developers searching for Alchemy BNB Smart Chain RPC usually want a working BSC endpoint, the correct chain settings, and a way to judge whether a managed provider fits their workload. This page gives you the BNB Smart Chain mainnet and testnet parameters, a request example, and the criteria that separate a shared endpoint from dedicated node infrastructure. It also explains when a managed RPC API such as OnFinality is a better fit than running your own BSC node, and what to check before you migrate production traffic.

Question 5

BSC JSON-RPC Endpoint: Chain Settings, Wallet Config, and Debugging

Accepted Answer

The BNB Smart Chain (BSC) JSON-RPC endpoint is the HTTP or WebSocket URL your app points at to read chain state and submit transactions. For mainnet you need chain ID 56, the BNB native currency, and a reliable RPC URL; for testnet you use chain ID 97 and tBNB. This page covers the exact chain settings, wallet and code configuration, the JSON-RPC methods you will call most, and how to debug the errors that show up first. It also explains when a shared public endpoint is enough and when a dedicated BNB Chain node is the better fit.

Question 6

BNB Smart Chain Testnet RPC and Chain Settings: How Do I Connect?

Accepted Answer

BNB Smart Chain Testnet (chain ID 97) uses tBNB as its native currency and is the standard environment for testing BSC contracts, wallets, and indexers before mainnet. You need the correct RPC URL, chain ID, symbol, and explorer URL to add it to a wallet or point a development framework at it.

This reference covers the exact chain settings, a public endpoint you can use to get started, wallet and code configuration examples, faucet and debugging notes, and the point at which a shared public endpoint stops being the right choice for your workload.

Question 7

How do I add a BNB Chain RPC to MetaMask?

Accepted Answer

Adding BNB Smart Chain to MetaMask takes one network form: chain ID 56, the BNB Chain RPC URL you want to use, BNB as the currency symbol, and https://bscscan.com as the explorer. The part that actually affects your app is which RPC URL you paste in, because a public endpoint and a managed or dedicated endpoint behave very differently under load.

This page covers the exact chain settings for BNB Smart Chain mainnet and testnet, how to add them in MetaMask, how to verify the connection with curl and ethers, and when a shared public endpoint is enough versus when you should move to managed or dedicated BNB Chain infrastructure.

Question 8

BNB Chain RPC: endpoints, setup, and rate limits for 2026

Accepted Answer

BNB Chain (BNB Smart Chain) exposes a standard EVM JSON-RPC interface, so most tooling that works with Ethereum works here after you change the chain ID, RPC URL, and symbol. This page covers the mainnet and testnet chain settings, how to wire an endpoint into wallets and libraries, and what rate limits and workload patterns to plan for.

Use it as a working reference: copy the chain settings, test a request with curl, then decide whether a shared public endpoint, a managed RPC API, or a dedicated node fits your traffic. OnFinality provides BNB Chain RPC API access and dedicated node infrastructure if you need more headroom than public endpoints allow.

Question 9

BNB Smart Chain JSON-RPC Quickstart: Endpoint Settings, Chain ID, and First Calls

Accepted Answer

This reference walks through the BNB Smart Chain JSON-RPC quickstart: the mainnet and testnet endpoint settings, chain ID, native currency, and explorer values you need to add the network to a wallet or client, plus the first JSON-RPC calls most developers run. It also covers which methods behave differently on BSC, how to read reverts and rate-limit responses, and when a shared public endpoint is enough versus when a dedicated node makes more sense.

Use it as a working checklist: confirm the chain settings, send a curl or viem request, then decide whether your workload needs archive access, higher throughput, or WebSocket subscriptions. OnFinality provides BNB Smart Chain RPC API access and dedicated node infrastructure if you want managed endpoints instead of running your own node.

Question 10

What RPC URL should you use for BNB Smart Chain?

Accepted Answer

The RPC URL for BNB Smart Chain mainnet is https://bnb.api.onfinality.io/public, with chain ID 56 and BNB as the native token. For testnet, use https://bnb-testnet.api.onfinality.io/public with chain ID 97 and tBNB. This article shows how to add the network to your wallet, call JSON-RPC methods, and decide when a public endpoint is enough versus when you need dedicated node infrastructure.

Question 11

How do you use a Chainlist-style directory to find supported RPC networks and endpoints?

Accepted Answer

Chainlist-style directories exist to solve one problem: mapping a chain ID to a working RPC endpoint so wallets and dApps can connect without guesswork. This article explains how those directories are structured, how to read the network metadata they expose, and how to verify an endpoint before you ship it to production.

It also covers where public directory endpoints stop being enough, what to check when a listed endpoint fails, and how a managed RPC API or dedicated node fits when you need predictable behavior across many chains.

Question 12

BNB Smart Chain public RPC URL: how do you connect and when should you switch?

Accepted Answer

A BNB Smart Chain public RPC URL is a shared HTTPS endpoint that lets wallets, scripts, and dApps read chain data and submit transactions without running a node. The OnFinality public endpoint for BNB Smart Chain mainnet is https://bnb.api.onfinality.io/public, with chain ID 56 and BNB as the native token.

Public endpoints are fine for prototyping, wallet setup, and low-volume reads. For production traffic, archive queries, or WebSocket subscriptions, teams usually move to a managed RPC API or a dedicated node so they control capacity and avoid shared-endpoint contention.

API Service

Dedicated Nodes

Enterprise Nodes

Indexer Services

Network Prototyping Tools

Staking & Validators

AI Agent

RPC documentation entries

BNB API: BSC JSON-RPC Methods and Endpoint Setup

What is the BNBChain list and how do BNB Smart Chain and application sidechains fit together?

BNB Smart Chain RPC Quickstart: Endpoint, Chain ID, and First Calls

Alchemy BNB Smart Chain RPC: How to Evaluate and Configure a BSC Endpoint

BSC JSON-RPC Endpoint: Chain Settings, Wallet Config, and Debugging

BNB Smart Chain Testnet RPC and Chain Settings: How Do I Connect?

How do I add a BNB Chain RPC to MetaMask?

BNB Chain RPC: endpoints, setup, and rate limits for 2026

BNB Smart Chain JSON-RPC Quickstart: Endpoint Settings, Chain ID, and First Calls

What RPC URL should you use for BNB Smart Chain?

How do you use a Chainlist-style directory to find supported RPC networks and endpoints?

BNB Smart Chain public RPC URL: how do you connect and when should you switch?

Never Worry about Infrastructure Again

Supported Networks

Product

Company

Resources

BNB Chain RPC Assistant

RPC documentation entries

BNB API: BSC JSON-RPC Methods and Endpoint Setup

What is the BNBChain list and how do BNB Smart Chain and application sidechains fit together?

BNB Smart Chain RPC Quickstart: Endpoint, Chain ID, and First Calls

Alchemy BNB Smart Chain RPC: How to Evaluate and Configure a BSC Endpoint

BSC JSON-RPC Endpoint: Chain Settings, Wallet Config, and Debugging

BNB Smart Chain Testnet RPC and Chain Settings: How Do I Connect?

How do I add a BNB Chain RPC to MetaMask?

BNB Chain RPC: endpoints, setup, and rate limits for 2026

BNB Smart Chain JSON-RPC Quickstart: Endpoint Settings, Chain ID, and First Calls

What RPC URL should you use for BNB Smart Chain?

How do you use a Chainlist-style directory to find supported RPC networks and endpoints?

BNB Smart Chain public RPC URL: how do you connect and when should you switch?

Never Worry about Infrastructure Again

Supported Networks

Product

Company

Resources