Blast RPC Endpoint

Fast, flat-rate Blast RPC node provider — free tier, no KYC, HTTP & WebSocket.

Blast is an Ethereum L2 with a defining feature: native yield on bridged ETH and stablecoins. Bridged ETH automatically earns staking yield, and USDB (the stablecoin) earns T-bill yield, both rebasing into user accounts without requiring any action.

About Blast

Blast launched mainnet in February 2024 with significant token incentives and rapidly accumulated TVL. The native-yield mechanism makes Blast attractive for capital that would otherwise sit idle in DeFi positions.

Blast is technically an optimistic rollup, but with custom modifications to enable the native yield primitive. The team has stated intent to align with OP Stack standards over time.

Common Use Cases on Blast

• Native-yield DeFi positions
• Stablecoin earning T-bill yield (USDB)
• Memecoin and creator-economy launches
• Onchain games leveraging yield-bearing in-game balances
• Capital-efficient trading and market making

Blast Ecosystem

Thruster (DEX), Juice (lending), Blitz (perps), and a heavy memecoin scene early on. The native yield model is unusual enough that some standard DeFi contracts need adaptation to handle rebasing balances correctly.

HTTP Endpoint

WebSocket Endpoint

Quick Start: Connect to Blast

cURL

curl -X POST https://rpc.swiftnodes.io/rpc/blast?key=YOUR_API_KEY \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'

ethers.js

import { JsonRpcProvider } from "ethers";

const provider = new JsonRpcProvider(
  "https://rpc.swiftnodes.io/rpc/blast?key=YOUR_API_KEY"
);

const blockNumber = await provider.getBlockNumber();
console.log("Blast block:", blockNumber);

viem

import { createPublicClient, http } from "viem";

const client = createPublicClient({
  transport: http("https://rpc.swiftnodes.io/rpc/blast?key=YOUR_API_KEY"),
});

const blockNumber = await client.getBlockNumber();

web3.py

from web3 import Web3

w3 = Web3(Web3.HTTPProvider("https://rpc.swiftnodes.io/rpc/blast?key=YOUR_API_KEY"))
print("Blast block:", w3.eth.block_number)

Add Blast to MetaMask

Bridging to Blast

Native bridge (https://blast.io/en/bridge) for Ethereum ↔ Blast. Stargate, Across for alternatives. Note that bridged ETH automatically starts earning yield — withdrawing requires either the native bridge (14-day challenge) or a third-party fast bridge.

Features of SwiftNodes for Blast

• Multiple load-balanced upstream nodes for high availability
• Health-checked every 60 seconds with automatic failover
• Free tier available — no credit card or KYC required
• Flat-rate monthly pricing with no per-request fees
• HTTP and WebSocket support
• One API key works across all 75+ supported chains, including Blast

Rate Limits

Frequently Asked Questions: Blast