Question 1

What is a TON testnet RPC and how do you use it?

Accepted Answer

A TON testnet RPC endpoint lets you interact with the TON testnet, a sandbox environment for building and testing dApps, wallets, and smart contracts without risking real TON. This article explains the available endpoints, how to authenticate, and how to choose a reliable provider for your development workflow.

Question 2

How do I connect to the TON testnet?

Accepted Answer

The TON testnet is a public sandbox for building and testing smart contracts, wallets, and dApps without risking mainnet assets. This guide covers the key endpoints, faucets, and practical steps to get your testnet environment running, plus how to choose a reliable RPC provider for your development workflow.

Question 3

Sepolia Beacon RPC: Endpoints, Methods, and How to Use Them

Accepted Answer

The Sepolia Beacon RPC exposes the consensus layer of the Sepolia testnet, letting you query validator, block, and finality data. This page covers the key endpoints, common methods, and how to choose a reliable provider for your testnet development.

Question 4

Sepolia RPC: URL, Chain ID, Faucet & Developer Setup

Accepted Answer

Sepolia is the primary Ethereum testnet for contract and dapp development. To use Sepolia RPC, set the chain ID to 11155111 (0xaa36a7), use test ETH as the native currency, and connect to an execution-layer JSON-RPC endpoint over HTTPS or WebSocket. A public endpoint can get you started, but authenticated access from a provider such as OnFinality gives more predictable request limits for CI and repeated testing. Fund a dedicated test wallet from a trusted faucet, and never reuse a mainnet private key or seed phrase. The simplest connectivity check is a JSON-RPC call like eth_blockNumber, followed by the methods your application actually depends on. Verify whether you need archive, trace, or debug support on the endpoint. Before promoting a workflow to Ethereum mainnet, check method coverage, rate limits, and mainnet-specific settings such as chain ID 1 and real ETH fees. Use /networks/eth-sepolia for the current Sepolia endpoint and /pricing/rpc for plan details. Keep Sepolia execution-layer RPC separate from Beacon or consensus APIs, and treat Sepolia strictly as a test environment.

Question 5

BNB Testnet RPC: Endpoint, Chain ID, Faucet & Wallet Setup

Accepted Answer

BNB Smart Chain Testnet (BSC Testnet) uses chain ID 97 (0x61) and tBNB as gas. For light testing, you can use the official public endpoint https://bsc-testnet-dataseed.bnbchain.org (and other official dataseed endpoints), but those are rate-limited to 10,000 requests per 5 minutes and may disable eth_getLogs. OnFinality provides a public BNB testnet RPC at https://bnb-testnet.api.onfinality.io/public with EVM-compatible HTTPS and WebSocket support, archive data, and trace/API access for developers who need more consistent test infrastructure. To start, request tBNB from the BNB faucet, add the network to MetaMask with the correct settings, and verify connectivity with eth_chainId or eth_blockNumber. Keep the testnet endpoint separate from mainnet (chain ID 56 / 0x38). If you encounter 429 rate-limit errors or wrong-network rejections, switch to a private endpoint or recheck the chain ID. For contract deployment and CI/CD workflows, refer to the BNB Smart Chain Testnet Developer Guide.

Question 6

Sui Testnet RPC & gRPC: Endpoint, Faucet & Developer Setup

Accepted Answer

Sui Testnet RPC gives developers a gRPC-first path to query checkpoints, objects, and balances; simulate and execute transactions; and stream real-time activity using OnFinality managed endpoints. The modern workflow uses LedgerService for checkpoint data, StateService for object and balance reads, TransactionExecutionService for SimulateTransaction and ExecuteTransaction, and SubscriptionService for SubscribeCheckpoints, SubscribeTransactions, and SubscribeEvents. Legacy Full Node JSON-RPC remains useful for migration comparisons, but new testnet integrations should target gRPC and treat JSON-RPC as a legacy surface. Use the official faucet at https://faucet.sui.io for test SUI, and keep testnet credentials separate from mainnet. Configure endpoint placeholders such as GRPC_ENDPOINT and authorization headers in SDKs, wallets, and CI. Because testnet endpoints can reset and faucet limits change, always build your testnet environment to be disposable and avoid hard-coding object IDs or transaction digests. Testnet is not permanent: verify current faucet policy, expect resets, and validate the same workflows before moving to Sui mainnet. For operational guidance, see /rpc-assistant/sui-rpc-guide and /networks/sui-testnet.

Question 7

Base Sepolia RPC Endpoint: Chain Settings, Faucet, and Debugging

Accepted Answer

Base Sepolia is a testnet for the Base L2 network, built on the OP Stack and using Sepolia ETH. This page provides the official RPC endpoints, chain configuration, faucet links, and common troubleshooting tips for developers testing dapps on Base Sepolia.

Question 8

What is Bitcoin Testnet and How Do Developers Use It?

Accepted Answer

Bitcoin Testnet is a public blockchain that mirrors Bitcoin mainnet but uses test coins with no real value. Developers use it to experiment with transactions, wallets, and smart contracts without financial risk. This article covers testnet setup, RPC endpoints, faucets, and best practices for choosing a testnet RPC provider.

Question 9

How to Connect to ZenChain Testnet: RPC Endpoints, Faucets, and Developer Setup

Accepted Answer

ZenChain testnet is an EVM-compatible Bitcoin Layer 1 test environment for building and testing dApps with Bitcoin security and Ethereum programmability. This guide covers RPC endpoints, chain settings, faucet access, and step-by-step setup for developers.

Question 10

TON Testnet: Complete Developer's Guide to RPC Endpoints, Faucets, and Setup

Accepted Answer

# TON Testnet: Complete Developer's Guide to RPC Endpoints, Faucets, and Setup The TON testnet is a public sandbox environment for The Open Network, allowing developers to deploy smart contracts, test dApps, and experiment with TON features without using real TON tokens. This guide covers everything you need to get started: RPC endpoints, faucets, block explorers, and best practices for reliable testnet infrastructure. Whether you're building a wallet, a DeFi protocol, or an NFT marketplace, the TON testnet is your first step to production-ready development. OnFinality provides dedicated and shared RPC endpoints for the TON testnet, offering high reliability and scalability for your testing workflows. With support for both HTTP and WebSocket connections, you can integrate seamlessly into your development pipeline.

In practice, the useful question is not just whether an endpoint exists. Teams should check testnet endpoint access, chain settings, faucet assumptions, staging checks, and the path to mainnet. That turns the page from a definition into a decision tool: it helps you decide what to test first, what belongs in staging, and when a production workload may need stronger isolation or clearer request visibility. If you already know the network you need, open /networks/ton after using this checklist so you can test the endpoint against your real methods.

Question 11

How to Get ZenChain Testnet ZTC Tokens: Faucet Guide and RPC Setup

Accepted Answer

# How to Get ZenChain Testnet ZTC Tokens: Faucet Guide and RPC Setup ZenChain is a Bitcoin-aligned Layer 1 blockchain that combines Bitcoin's security with Ethereum-compatible programmability. To build and test dApps on ZenChain Testnet, you need testnet ZTC tokens for gas fees. This guide covers how to claim ZTC from the official ZenChain faucet, alternative faucets, and how to configure your wallet with the correct RPC endpoint. Whether you are a developer deploying smart contracts or a user exploring the testnet, this article provides the essential steps to get started.

In practice, the useful question is not just whether an endpoint exists. Teams should check testnet endpoint access, chain settings, faucet assumptions, staging checks, and the path to mainnet. That turns the page from a definition into a decision tool: it helps you decide what to test first, what belongs in staging, and when a production workload may need stronger isolation or clearer request visibility. If you already know the network you need, open /networks after using this checklist so you can test the endpoint against your real methods.

Question 12

Polygon Amoy RPC Guide: endpoints, faucet, MetaMask, and testnet checks

Accepted Answer

Polygon Amoy is the current Polygon PoS testnet. Developers use it to test contracts, wallets, dApps, and backend services before moving to Polygon mainnet. The practical setup is simple: add Amoy with chain ID 80002, fund a test wallet with POL from a faucet, connect an RPC endpoint, and verify your app’s read/write flow before launch.

This guide focuses on the checks that usually matter in development: MetaMask setup, faucet access, endpoint reliability, common RPC calls, and when to use an authenticated provider instead of a public testnet endpoint.

API Service

Dedicated Nodes

Enterprise Nodes

Indexer Services

Network Prototyping Tools

Staking & Validators

AI Agent

RPC documentation entries

What is a TON testnet RPC and how do you use it?

How do I connect to the TON testnet?

Sepolia Beacon RPC: Endpoints, Methods, and How to Use Them

Sepolia RPC: URL, Chain ID, Faucet & Developer Setup

BNB Testnet RPC: Endpoint, Chain ID, Faucet & Wallet Setup

Sui Testnet RPC & gRPC: Endpoint, Faucet & Developer Setup

Base Sepolia RPC Endpoint: Chain Settings, Faucet, and Debugging

What is Bitcoin Testnet and How Do Developers Use It?

How to Connect to ZenChain Testnet: RPC Endpoints, Faucets, and Developer Setup

TON Testnet: Complete Developer's Guide to RPC Endpoints, Faucets, and Setup

How to Get ZenChain Testnet ZTC Tokens: Faucet Guide and RPC Setup

Polygon Amoy RPC Guide: endpoints, faucet, MetaMask, and testnet checks

Never Worry about Infrastructure Again

Supported Networks

Product

Company

Resources

Testnet RPC RPC Assistant

RPC documentation entries

What is a TON testnet RPC and how do you use it?

How do I connect to the TON testnet?

Sepolia Beacon RPC: Endpoints, Methods, and How to Use Them

Sepolia RPC: URL, Chain ID, Faucet & Developer Setup

BNB Testnet RPC: Endpoint, Chain ID, Faucet & Wallet Setup

Sui Testnet RPC & gRPC: Endpoint, Faucet & Developer Setup

Base Sepolia RPC Endpoint: Chain Settings, Faucet, and Debugging

What is Bitcoin Testnet and How Do Developers Use It?

How to Connect to ZenChain Testnet: RPC Endpoints, Faucets, and Developer Setup

TON Testnet: Complete Developer's Guide to RPC Endpoints, Faucets, and Setup

How to Get ZenChain Testnet ZTC Tokens: Faucet Guide and RPC Setup

Polygon Amoy RPC Guide: endpoints, faucet, MetaMask, and testnet checks

Never Worry about Infrastructure Again

Supported Networks

Product

Company

Resources