Mode Network is a DeFi-focused OP-Stack L2 with one feature other Superchain members don't offer: Sequencer Fee Sharing (SFS). Deployers register their contracts with Mode's on-chain SFS registry to earn a percentage of the gas fees those contracts generate — protocol revenue flows back to builders, not just the sequencer. NodeFlare runs a dedicated Mode node with multi-region routing and automatic failover, so you can start building in under a minute.
Mode RPC URLs
Public endpoint — no API key:
https://rpc.nodeflare.app/mode/publicKeyed endpoint (free account — higher limits, heavy methods):
https://rpc.nodeflare.app/mode/v1/{YOUR_KEY}Get your free key → — no credit card.
Quick start
curl https://rpc.nodeflare.app/mode/public \
-X POST \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'import { ethers } from 'ethers';
const provider = new ethers.JsonRpcProvider(
'https://rpc.nodeflare.app/mode/public'
);
console.log('Mode block:', await provider.getBlockNumber());from web3 import Web3
w3 = Web3(Web3.HTTPProvider('https://rpc.nodeflare.app/mode/public'))
print('Mode block:', w3.eth.block_number)Mode at a glance
| Parameter | Value |
|---|---|
| Chain ID | 34443 (0x868b) |
| Currency | ETH |
| Type | OP-Stack rollup (Superchain) |
| Block time | ~2 s |
| Finality | Soft ~2 s · L1-final ~13 min |
| WebSocket | Coming soon |
| Explorer | explorer.mode.network |
On Sequencer Fee Sharing (SFS): Mode's SFS registry lets deployers earn a share of the fees their contracts generate. Once registered, the contract address accumulates fee revenue claimable by the deployer. From an RPC perspective, SFS is completely invisible — all JSON-RPC calls behave exactly as on any other OP-Stack chain. If you're deploying DeFi contracts on Mode, registering with SFS is worth evaluating.
Mode launched in early 2024 and has grown a focused DeFi ecosystem (DEX and lending protocols dominate its state). As a Superchain member, all Ethereum tooling works without modification.
Free tier
- 2,000,000 compute units/month — no credit card
eth_getLogs(75 CU),trace_*/debug_*(100 CU) included on free- All 23 supported chains under one key — Mode, Ethereum, Base, Arbitrum and more
- Multi-region routing with automatic failover
Our per-method reference for Mode covers chain-specific notes for every JSON-RPC call.
Add Mode to MetaMask
| Field | Value |
|---|---|
| Network name | Mode |
| RPC URL | https://rpc.nodeflare.app/mode/public |
| Chain ID | 34443 |
| Currency symbol | ETH |
| Block explorer | https://explorer.mode.network |
FAQ
What is the Mode Network RPC URL?
https://rpc.nodeflare.app/mode/public — no API key required, rate-limited per IP. A free key unlocks higher limits, eth_getLogs, and debug/trace methods.
Is the Mode RPC free?
Yes. The public endpoint is free without sign-up; a free account adds 2M CU/month and a dedicated keyed path with no credit card required.
Does eth_getLogs work on Mode?
Yes — with a free API key. Mode's DeFi-heavy workload (DEX swaps, lending events) generates moderate log volume; use address + topic0 filters. Each call costs 75 CU.
What is Mode's Sequencer Fee Sharing?
SFS is Mode's on-chain mechanism that lets deployers register contracts to earn a share of the gas fees those contracts generate. From the RPC layer it's invisible — standard EVM semantics apply. See the Mode SFS docs to register.
Does Mode support WebSocket?
Not yet on NodeFlare — WebSocket is live on Ethereum, Base, BNB Chain, Arbitrum, Optimism, HyperEVM, and Avalanche. Mode WS is on the roadmap.
Do debug_ and trace_ methods work?
Yes — Mode runs op-reth, which exposes the full debug_ namespace. These work on the free tier with a key.
Building on Mode? Get your free NodeFlare key → — covers Mode plus all 23 supported chains.