Monad

Monad is the primary EVM test network exercised by the current sb-on-demand-examples repo. The verified Monad testnet Switchboard proxy is 0x6724818814927e057a693f4e3A172b6cC1eA690C.

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	0x6724818814927e057a693f4e3A172b6cC1eA690C

Quick Start

Price Feeds

git clone https://github.com/switchboard-xyz/sb-on-demand-examples.git
cd sb-on-demand-examples/evm/price-feeds
bun install
forge build
cp .env.example .env

Set your .env like this:

PRIVATE_KEY=0xyour_private_key_here
RPC_URL=https://testnet-rpc.monad.xyz
NETWORK=monad-testnet
# Optional: if omitted, the example deploys a new consumer contract for you
CONTRACT_ADDRESS=0xyour_existing_consumer

Then run:

bun run example

This flow was verified on Monad testnet. The packaged script now handles the current Crossbar Monad testnet rollout by falling back to the network-agnostic oracle quote endpoint if the chain-specific feed lookup is unavailable.

Direct Randomness

cd ../randomness
bun install
PRIVATE_KEY=0xyour_private_key_here bun run example

That example talks directly to the Switchboard proxy, creates a randomness request, waits for the settlement window, resolves through Crossbar, and settles on-chain.

Coin Flip

cd coin-flip
bun install
forge build
forge script deploy/CoinFlip.s.sol:CoinFlipScript \
  --rpc-url https://testnet-rpc.monad.xyz \
  --private-key $PRIVATE_KEY \
  --broadcast

After deployment, fund the example contract with a small bankroll so it can pay winning flips:

cast send $COIN_FLIP_CONTRACT_ADDRESS \
  --rpc-url https://testnet-rpc.monad.xyz \
  --private-key $PRIVATE_KEY \
  --value 0.05ether

Set your .env:

PRIVATE_KEY=0xyour_private_key_here
RPC_URL=https://testnet-rpc.monad.xyz
COIN_FLIP_CONTRACT_ADDRESS=0xyour_deployed_contract
WAGER_AMOUNT=0.01

Run the game script:

bun run flip

Pancake Stacker

cd ../pancake-stacker
bun install
forge build
forge script deploy/PancakeStacker.s.sol:PancakeStackerScript \
  --rpc-url https://testnet-rpc.monad.xyz \
  --private-key $PRIVATE_KEY \
  --broadcast

Set your .env:

PRIVATE_KEY=0xyour_private_key_here
RPC_URL=https://testnet-rpc.monad.xyz
PANCAKE_STACKER_CONTRACT_ADDRESS=0xyour_deployed_contract

Then run:

bun run flip

If a previous run already created a pending flip, the packaged script resumes settlement instead of failing.

Integration Example

import { ethers } from "ethers";
import { CrossbarClient } from "@switchboard-xyz/common";

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

const switchboard = new ethers.Contract(
  "0x6724818814927e057a693f4e3A172b6cC1eA690C",
  ["function getFee(bytes[] calldata updates) external view returns (uint256)"],
  signer
);

const priceConsumer = new ethers.Contract(
  process.env.CONTRACT_ADDRESS!,
  ["function updatePrices(bytes[] calldata updates, bytes32[] calldata feedIds) external payable"],
  signer
);

const crossbar = new CrossbarClient("https://crossbar.switchboard.xyz");
const feedHash = "0xa0950ee5ee117b2e2c30f154a69e17bfb489a7610c508dc5f67eb2a14616d8ea";

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

await priceConsumer.updatePrices(updates, [feedHash], { value: fee });

Monad Notes

• MON is the native gas token on Monad.

• The current examples repo is organized as standalone subprojects under evm/price-feeds, evm/randomness, evm/randomness/coin-flip, and evm/randomness/pancake-stacker.

• Testnet MON is available from the Monad faucet.