Mode RPC Endpoint

Flat-rate Mode RPC provider and Mode RPC node access: free tier, no KYC, HTTP. Mode mainnet chain ID 34443.

Mode is an Ethereum Layer 2 built on the OP Stack and part of the Optimism Superchain, focused on DeFi and on-chain financial applications. SwiftNodes provides Mode mainnet RPC over HTTP.

About Mode

Mode's mainnet launched on January 31, 2024. It is an OP Stack optimistic rollup that settles to Ethereum and uses ETH as its native gas token, with block times of about 2 seconds.

As a Superchain member, Mode shares tooling and interoperability with Optimism and other OP Stack chains. The project emphasizes DeFi and AI-driven on-chain finance, and developers deploy standard Solidity contracts using Ethereum tooling such as Foundry and Hardhat.

Common Use Cases on Mode

• DeFi protocols
• Yield-focused applications
• On-chain AI / agent finance
• Low-fee transactions
• Superchain interoperable apps

Mode Ecosystem

Part of the Optimism Superchain; hosts DeFi applications and uses OP Stack tooling shared with Optimism, Base, and other Superchain members.

Mode Mainnet RPC URL (HTTP)

Mode WebSocket RPC URL

Not available for Mode right now: none of its upstreams currently accepts a subscription in our health checks. Poll the HTTP endpoint above instead.

Quick Start: Connect to Mode

cURL

curl -X POST https://rpc.swiftnodes.io/rpc/mode?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/mode?key=YOUR_API_KEY"
);

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

viem

import { createPublicClient, http } from "viem";

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

const blockNumber = await client.getBlockNumber();

web3.py

from web3 import Web3

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

Add Mode to MetaMask

Bridging to Mode

Mode provides a native OP Stack bridge to Ethereum; third-party bridges such as Across and Stargate offer faster transfers.

Features of SwiftNodes for Mode

• Load-balanced across multiple upstream nodes wherever a chain has more than one, with automatic failover
• Health-checked every 2 minutes with automatic failover
• Free tier available — no credit card or KYC required
• Flat-rate monthly pricing with no per-request fees
• HTTP support (WebSocket not available for this chain right now)
• One API key works across all 75+ supported chains, including Mode

Rate Limits

Frequently Asked Questions: Mode

Related L2 & rollup chains

Explore RPC endpoints for other L2 & rollup networks on SwiftNodes: