util

beam util exposes pure local helpers that do not require Beam config, wallets, RPCs, OpenChain, or Etherscan. It runs as a standalone path, so it works even when ~/.beam has not been initialized.

Several subcommands also read stdin when you omit the positional value, so shell pipelines map cleanly onto beam util.

ABI and calldata

$ beam util sig "transfer(address,uint256)"
$ beam util sig-event "Transfer(address indexed,address indexed,uint256)"

$ beam util calldata "transfer(address,uint256)" 0x1111... 5
$ beam util abi-encode "(address,uint256)" 0x1111... 5
$ beam util abi-encode-event "Transfer(address indexed,address indexed,uint256)" \
  0x1111... 0x2222... 5

$ beam util decode-calldata 0xa9059cbb...
$ beam util decode-abi "(address,uint256)" 0x...
$ beam util decode-error 0x08c379a0...
$ beam util decode-event "Transfer(address,address,uint256)" 0x...
$ beam util decode-string 0x...

$ beam util pretty-calldata 0xa9059cbb...

Bytes and text

$ beam util address-zero
$ beam util hash-zero
$ beam util concat-hex 0xab 0xcd

$ beam util format-bytes32-string "hello"
$ beam util parse-bytes32-string 0x...
$ beam util parse-bytes32-address 0x...

$ beam util from-bin            # raw bytes via stdin → hex
$ beam util to-hexdata "hello"
$ beam util from-utf8 "hello"
$ beam util to-utf8 0x68656c6c6f
$ beam util to-ascii 0x68656c6c6f

$ beam util to-bytes32 0xab
$ beam util pad 0xab 32
$ beam util to-check-sum-address 0x1111...

Units and number transforms

$ beam util to-wei 1 gwei
$ beam util from-wei 1000000000 gwei
$ beam util to-unit 1 gwei
$ beam util parse-units 1.5 18
$ beam util format-units 1500000000000000000 18

$ beam util max-int
$ beam util max-uint
$ beam util min-int

$ beam util shl 0x01 4
$ beam util shr 0xff 2

$ beam util to-base 100 16        # decimal → hex
$ beam util to-dec 0x64
$ beam util to-hex 100
$ beam util to-int256 -1
$ beam util to-uint256 1

$ beam util to-fixed-point 3.14 18
$ beam util from-fixed-point 3140000000000000000 18

Hashing, storage, address derivation

$ beam util keccak "hello"
$ beam util hash-message "hello"
$ beam util namehash alice.eth

$ beam util index address 0x1111... 1
$ beam util index-erc7201 "my.namespace.id"

$ beam util compute-address --deployer 0x... --nonce 0
$ beam util create2 \
  --deployer 0x0000000000000000000000000000000000000000 \
  --salt 0x0000000000000000000000000000000000000000000000000000000000000000 \
  --init-code 0x00

RLP

$ beam util to-rlp '["0xab","0xcd"]'
$ beam util from-rlp 0xc4823412abcd

Full subcommand list

• ABI and calldata: abi-encode, abi-encode-event, calldata, decode-abi, decode-calldata, decode-error, decode-event, decode-string, pretty-calldata, sig, sig-event
• Bytes and text: address-zero, concat-hex, format-bytes32-string, from-bin, from-utf8, hash-zero, pad, parse-bytes32-address, parse-bytes32-string, to-ascii, to-bytes32, to-check-sum-address, to-hexdata, to-utf8
• Units and number transforms: format-units, from-fixed-point, from-wei, max-int, max-uint, min-int, parse-units, shl, shr, to-base, to-dec, to-fixed-point, to-hex, to-int256, to-uint256, to-unit, to-wei
• Hashing, storage, address derivation: compute-address, create2, hash-message, index, index-erc7201, keccak, namehash
• RLP: from-rlp, to-rlp