Question 1

What is an RPC endpoint for Blast?

Accepted Answer

An RPC (Remote Procedure Call) endpoint is a URL that allows your application to communicate with the Blast blockchain. Through RPC endpoints, you can read blockchain data, submit transactions, query account balances, and interact with smart contracts without running your own Blast node.

Question 2

What are the best free Blast RPC endpoints?

Accepted Answer

RPC Directory lists multiple free public Blast endpoints you can use for development and low-traffic applications. Public endpoints are rate-limited and may experience downtime during high traffic. For production applications, consider using a paid RPC provider for better reliability and higher rate limits.

Question 3

What is the Blast chain ID?

Accepted Answer

The Blast Testnet chain ID is 23888. This unique identifier is used by wallets like MetaMask to connect to the correct network and prevent transaction replay attacks between different EVM chains.

Question 4

How do I add Blast to MetaMask or other wallets?

Accepted Answer

To add Blast Testnet to your wallet, use our one-click wallet integration at /add - it works with MetaMask, Rainbow, Coinbase Wallet, and other popular wallets. Or manually: 1) Open your wallet and find the network settings. 2) Click "Add Network". 3) Enter the network name "Blast Testnet", RPC URL (copy one from this page), Chain ID "23888", and currency symbol "ETH". 4) Save.

Question 5

How do I connect to Blast with ethers.js or web3.js?

Accepted Answer

To connect with ethers.js: `const provider = new ethers.JsonRpcProvider("YOUR_RPC_URL")`. For web3.js: `const web3 = new Web3("YOUR_RPC_URL")`. Replace YOUR_RPC_URL with any endpoint from this page. For production, use a provider with an API key for better rate limits.

Question 6

How do I get free Blast testnet tokens?

Accepted Answer

Blast Testnet testnet tokens can typically be obtained from community faucets or by requesting them in the official Discord/Telegram channels. Testnet tokens have no real value and are only for testing purposes.

Question 7

What's the difference between Blast mainnet and testnet?

Accepted Answer

Blast mainnet is the production network where real transactions with actual value occur. Testnets like Testnet are testing environments with tokens that have no real value. Always test your applications on testnet before deploying to mainnet to avoid costly mistakes.

Question 8

What's the difference between free and paid Blast RPC providers?

Accepted Answer

Free public endpoints have rate limits (typically 10-100 requests/second), may experience downtime during high traffic, and offer limited features. Paid providers offer higher rate limits (1000+ RPS), better reliability with SLAs, additional features like archive data access, WebSocket connections, and dedicated support. Use the pricing calculator above to compare costs.

Question 9

Does Blast support WebSocket connections?

Accepted Answer

Many Blast RPC providers offer WebSocket (WSS) endpoints for real-time subscriptions to new blocks, pending transactions, and contract events. WebSocket connections are ideal for applications that need instant updates without polling. Check the endpoints list above for available WSS URLs.

Blast Testnet RPC Endpoints

Public Endpoints

Resources

Need Production Support?

FAQ

Public Endpoints

Resources

Need Production Support?

FAQ

Q1What is an RPC endpoint for Blast?

Q2What are the best free Blast RPC endpoints?

Q3What is the Blast chain ID?

Q4How do I add Blast to MetaMask or other wallets?

Q5How do I connect to Blast with ethers.js or web3.js?

Q6How do I get free Blast testnet tokens?

Q7What's the difference between Blast mainnet and testnet?

Q8What's the difference between free and paid Blast RPC providers?

Q9Does Blast support WebSocket connections?

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