Monad

Monad is a high-performance EVM-compatible blockchain optimized for speed and efficiency. Switchboard On-Demand provides native oracle support for Monad with the same security guarantees and ease of use as other EVM chains.

Network Information

Network	Chain ID	RPC URL	Switchboard Contract
Mainnet	143	https://rpc-mainnet.monadinfra.com/rpc/YOUR_API_KEY	0xB7F03eee7B9F56347e32cC71DaD65B303D5a0E67
Testnet	10143	https://testnet-rpc.monad.xyz	0xD3860E2C66cBd5c969Fa7343e6912Eff0416bA33

Quick Start

1. Clone the Examples Repository

git clone https://github.com/switchboard-xyz/sb-on-demand-examples.git
cd sb-on-demand-examples/evm
bun install

2. Configure Your Wallet

Security: Never use export PRIVATE_KEY=... or pass private keys as command-line arguments—they appear in shell history and process listings.

Import your private key into Foundry's encrypted keystore:

cast wallet import mykey --interactive
# Enter your private key when prompted (hidden from terminal)
# Set a password to encrypt the keystore

Create a .env file for scripts (add to .gitignore):

PRIVATE_KEY=0xyour_private_key_here
RPC_URL=https://testnet-rpc.monad.xyz
NETWORK=monad-testnet
CONTRACT_ADDRESS=0xyour_contract_address

3. Deploy Contract

# Testnet
forge script script/DeploySwitchboardPriceConsumer.s.sol:DeploySwitchboardPriceConsumer \
  --rpc-url https://testnet-rpc.monad.xyz \
  --account mykey \
  --broadcast -vvvv

# Mainnet
forge script script/DeploySwitchboardPriceConsumer.s.sol:DeploySwitchboardPriceConsumer \
  --rpc-url https://rpc-mainnet.monadinfra.com/rpc/YOUR_API_KEY \
  --account mykey \
  --broadcast -vvvv

4. Run Examples

# Price Feeds (reads from .env)
bun scripts/run.ts

# Randomness (reads from .env)
bun run randomness

Integration Example

import { ethers } from 'ethers';
import { CrossbarClient, SWITCHBOARD_ABI } from '@switchboard-xyz/common';

const provider = new ethers.JsonRpcProvider('https://testnet-rpc.monad.xyz');
const signer = new ethers.Wallet(process.env.PRIVATE_KEY!, provider);

// Switchboard contract on Monad Testnet
const switchboardAddress = '0xD3860E2C66cBd5c969Fa7343e6912Eff0416bA33';
const switchboard = new ethers.Contract(switchboardAddress, SWITCHBOARD_ABI, signer);

// Fetch and update prices
const crossbar = new CrossbarClient('https://crossbar.switchboard.xyz');
const feedHash = '0xa0950ee5ee117b2e2c30f154a69e17bfb489a7610c508dc5f67eb2a14616d8ea'; // ETH/USD

const response = await crossbar.fetchOracleQuote([feedHash], 'mainnet');
const fee = await switchboard.getFee([response.encoded]);

const tx = await priceConsumer.updatePrices([response.encoded], { value: fee });
const receipt = await tx.wait();

console.log(`Price updated on Monad! Block: ${receipt.blockNumber}`);

Monad-Specific Considerations

• Native Token: MON (for gas fees)

• High Performance: Monad's optimized execution enables faster oracle updates

• Low Fees: Efficient gas usage for frequent price updates

• EVM Compatibility: All existing Ethereum tooling works seamlessly

Getting MON Tokens

Testnet:

• Use the Monad Testnet Faucet to get testnet MON

Mainnet:

• Acquire MON tokens through supported exchanges

• Bridge from other networks using official Monad bridges