Chains

chains:
  ethereum:
    engine: anvil
    chain_id: 31337

chains:
  ethereum:
    engine: anvil     # or hardhat, geth

chains:
  ethereum:
    chain_id: 31337   # Any integer

chains:
  ethereum:
    block_time: "2s"  # Produce a block every 2 seconds

chains:
  ethereum:
    mining:
      mode: auto       # auto | interval | manual
      interval: "2s"   # Only for interval mode

chains:
  ethereum:
    accounts: 10                        # Number of test accounts
    account_balance: "10000"            # Balance in ETH
    # OR
    balance: "10000000000000000000000"  # Balance in wei

chains:
  ethereum:
    gas_limit: 30000000       # Block gas limit
    base_fee: 1000000000      # Base fee in wei (1 gwei)
    hardfork: shanghai        # london | shanghai | cancun
    code_size_limit: 24576    # Max contract code size
    auto_impersonate: false   # Auto-impersonate all accounts

chains:
  ethereum:
    fork:
      network: mainnet          # Network name
      block_number: 18500000    # Fork at specific block (0 = latest)

chains:
  ethereum:
    fork:
      rpc_url: "${ALCHEMY_URL}"
      block_number: 18500000

chains:
  ethereum:
    genesis_accounts:
      - address: "0x1234567890abcdef1234567890abcdef12345678"
        balance: "1000000000000000000000"  # 1000 ETH in wei
      - address: "0xabcdef1234567890abcdef1234567890abcdef12"
        balance: "500000000000000000000"   # 500 ETH in wei

chains:
  ethereum:
    deploy:
      - artifact: "contracts/MyToken.sol:MyToken"
        constructor_args: ["MyToken", "MTK", 1000000]
        label: "token"
      - artifact: "contracts/Registry.sol:Registry"
        label: "registry"

chains:
  ethereum:
    engine: anvil
    chain_id: 31337
    block_time: "2s"
  polygon:
    engine: anvil
    chain_id: 137
    block_time: "2s"
  arbitrum:
    engine: anvil
    chain_id: 42161
    block_time: "1s"

dokrypt chain info --chain polygon
dokrypt chain mine 10 --chain arbitrum
dokrypt fork mainnet --chain ethereum