Test on Vibenet

Vibenet is Base’s experimental preview network, a devnet where new chain-level features go live before they roll out to Sepolia or Mainnet. Use it to build against cutting-edge Base capabilities.

Vibenet is for experimentation only. It is not intended for production or user-facing applications, and its state may be reset without notice.

See What’s Live on Vibenet

chain.base.org/vibenet is the hub for Vibenet: track the latest features as they ship, browse the block explorer, and request testnet ETH from the faucet.

If the embed doesn’t load, open chain.base.org/vibenet directly in a new tab.

Network Details


Network name	Base Vibenet
RPC endpoint	rpc.vibes.base.org
WebSocket endpoint	`wss://rpc.vibes.base.org/ws`
Chain ID	84538453
Currency symbol	ETH
Faucet	chain.base.org/vibenet/faucet
Block explorer	chain.base.org/vibenet/explorer

To add Vibenet to your wallet, see Connecting to Base.

Get Testnet ETH

Vibenet transactions need gas. Request testnet ETH from the Vibenet faucet, or drip programmatically:

Terminal

curl -X POST https://api.vibes.base.org/api/vibenet/faucet/drip \
  -H "content-type: application/json" \
  -d '{"address":"0xYourAddress"}'

Stream With WebSockets

Vibenet exposes a public WebSocket endpoint at wss://rpc.vibes.base.org/ws. Subscribe with eth_subscribe for push updates instead of polling:

newHeads — a new event on every block, for tracking chain and block state.
logs — contract events filtered by address and indexed topics, for tracking application state.

newHeads subscription

import WebSocket from "ws";

const ws = new WebSocket("wss://rpc.vibes.base.org/ws");

ws.on("open", () => {
  ws.send(JSON.stringify({
    jsonrpc: "2.0",
    id: 1,
    method: "eth_subscribe",
    params: ["newHeads"],
  }));
});

ws.on("message", (data) => {
  const msg = JSON.parse(data.toString());
  if (msg.method === "eth_subscription") {
    console.log("new head:", msg.params.result.number);
  }
});

With 200ms blocks, a 250–1000ms poll can miss multiple blocks, so treat WebSocket push as the primary source. Keep a small number of long-lived connections, multiplex subscriptions and ordinary JSON-RPC calls over one connection, and reserve polling for reconciliation (balances, fees, and health checks). Keep an HTTPS RPC call path as a fallback if the socket drops.

This public WebSocket is Vibenet only. Base does not provide a free public WebSocket RPC endpoint for Base Mainnet or Base Sepolia; the public endpoints there are HTTP only. For WebSocket access on Sepolia or Mainnet, run your own node or use a WebSocket-capable provider from the Base Services Hub.

What’s Available Now

B20 Token Standard

Base’s native token standard: roles, supply caps, policy gating, and memos built into the chain.

200ms Native Blocks

Test canonical 200ms blocks and migrate Flashblocks integrations.

Next Steps

Connect to Base

Add Vibenet to your wallet and development environment.

Launch a B20 Token

Deploy a token on Vibenet with one factory call.

Overview

Integrate DeFi

Tokenize Assets

Issue Stablecoins

Accept Payments

See What’s Live on Vibenet

Network Details

Get Testnet ETH

Stream With WebSockets

What’s Available Now

B20 Token Standard

200ms Native Blocks

Next Steps

Connect to Base

Launch a B20 Token

​See What’s Live on Vibenet

​Network Details

​Get Testnet ETH

​Stream With WebSockets

​What’s Available Now

B20 Token Standard

200ms Native Blocks

​Next Steps

Connect to Base

Launch a B20 Token

See What’s Live on Vibenet

Network Details

Get Testnet ETH

Stream With WebSockets

What’s Available Now

Next Steps