monad

Install the Monad Foundry fork with foundryup --network monad, set evm_version to prague in foundry.toml, then run forge create with your keystore account against https://rpc.monad.xyz. Fund the deployer with enough MON to cover the gas limit plus the ~10 MON reserve.

Monad charges gas_limit multiplied by gas price, not gas used, because execution is asynchronous and gas used is unknown at consensus time. Set explicit tight gas limits, such as 21000 for transfers, to avoid overpaying.

No, Monad does not support type 3 blob transactions. It supports transaction types 0, 1, 2, and 4 (EIP-7702 delegation), so use calldata for data availability instead of blobs.

Use forge verify-contract with the Sourcify verifier at https://sourcify-api-monad.blockvision.org/ for MonadVision, or the Etherscan verifier with chain ID 143 and an Etherscan API key for Monadscan. Socialscan requires its own API key and verifier URL.

The staking precompile at 0x1000 only accepts standard CALL, so Solidity view functions using STATICCALL will fail. Also check the 1e9 wei dust threshold, validator ID validity, and whether the withdrawal epoch has passed.

Cold account access costs 10,100 gas and cold storage access costs 8,100 gas on Monad, roughly 4x Ethereum, while warm access is unchanged. Precompiles are repriced 2-5x higher, with ecPairing at 225,000 gas versus Ethereum's 45,000.