DOCUMENTATION
cast mktx
Build and sign a transaction
$ cast mktx --helpUsage: cast mktx [OPTIONS] [TO] [SIG] [ARGS]... [COMMAND]
Commands:
--create Use to deploy raw contract bytecode
help Print this message or the help of the given subcommand(s)
Arguments:
[TO]
The destination of the transaction.
If not provided, you must use `cast mktx --create`.
[SIG]
The signature of the function to call
[ARGS]...
The arguments of the function to call
Options:
-h, --help
Print help (see a summary with '-h')
-j, --threads <THREADS>
Number of threads to use. Specifying 0 defaults to the number of
logical cores
[aliases: --jobs]
Transaction options:
--gas-limit <GAS_LIMIT>
Gas limit for the transaction
[env: ETH_GAS_LIMIT=]
--gas-price <PRICE>
Gas price for legacy transactions, or max fee per gas for EIP1559
transactions, either specified in wei, or as a string with a unit
type.
Examples: 1ether, 10gwei, 0.01ether
[env: ETH_GAS_PRICE=]
--priority-gas-price <PRICE>
Max priority fee per gas for EIP1559 transactions
[env: ETH_PRIORITY_GAS_PRICE=]
--value <VALUE>
Ether to send in the transaction, either specified in wei, or as a
string with a unit type.
Examples: 1ether, 10gwei, 0.01ether
--nonce <NONCE>
Nonce for the transaction
--legacy
Send a legacy transaction instead of an EIP1559 transaction.
This is automatically enabled for common networks without EIP1559.
--blob
Send a EIP-4844 blob transaction
--blob-gas-price <BLOB_PRICE>
Gas price for EIP-4844 blob transaction
[env: ETH_BLOB_GAS_PRICE=]
--auth <AUTH>
EIP-7702 authorization list.
Can be either a hex-encoded signed authorization or an address.
--access-list [<ACCESS_LIST>]
EIP-2930 access list.
Accepts either a JSON-encoded access list or an empty value to create
the access list via an RPC call to `eth_createAccessList`. To retrieve
only the access list portion, use the `cast access-list` command.
--path <BLOB_DATA_PATH>
The path of blob data to be sent
Tempo:
--tempo.fee-token <FEE_TOKEN>
Fee token address for Tempo transactions.
When set, builds a Tempo (type 0x76) transaction that pays gas fees in
the specified token.
If this is not set, the fee token is chosen according to network
rules. See the Tempo docs for more information.
--tempo.seq <SEQUENCE_KEY>
Nonce sequence key for Tempo transactions.
When set, builds a Tempo (type 0x76) transaction with the specified
nonce sequence key.
If this is not set, the protocol sequence key (0) will be used.
For more information see
[https://docs.tempo.xyz/protocol/transactions/spec-tempo-transaction#parallelizable-nonces](https://docs.tempo.xyz/protocol/transactions/spec-tempo-transaction#parallelizable-nonces).
Rpc options:
-r, --rpc-url <URL>
The RPC endpoint, default value is http://localhost:8545
[env: ETH_RPC_URL=]
-k, --insecure
Allow insecure RPC connections (accept invalid HTTPS certificates).
When the provider's inner runtime transport variant is HTTP, this
configures the reqwest client to accept invalid certificates.
--flashbots
Use the Flashbots RPC URL with fast mode
([https://rpc.flashbots.net/fast](https://rpc.flashbots.net/fast)).
This shares the transaction privately with all registered builders.
See:
[https://docs.flashbots.net/flashbots-protect/quick-start#faster-transactions](https://docs.flashbots.net/flashbots-protect/quick-start#faster-transactions)
--jwt-secret <JWT_SECRET>
JWT Secret for the RPC endpoint.
The JWT secret will be used to create a JWT for a RPC. For example,
the following can be used to simulate a CL `engine_forkchoiceUpdated`
call:
cast rpc --jwt-secret <JWT_SECRET> engine_forkchoiceUpdatedV2
'["0x6bb38c26db65749ab6e472080a3d20a2f35776494e72016d1e339593f21c59bc",
"0x6bb38c26db65749ab6e472080a3d20a2f35776494e72016d1e339593f21c59bc",
"0x6bb38c26db65749ab6e472080a3d20a2f35776494e72016d1e339593f21c59bc"]'
[env: ETH_RPC_JWT_SECRET=]
--rpc-timeout <RPC_TIMEOUT>
Timeout for the RPC request in seconds.
The specified timeout will be used to override the default timeout for
RPC requests.
Default value: 45
[env: ETH_RPC_TIMEOUT=]
--rpc-headers <RPC_HEADERS>
Specify custom headers for RPC requests
[env: ETH_RPC_HEADERS=]
-e, --etherscan-api-key <KEY>
The Etherscan (or equivalent) API key
[env: ETHERSCAN_API_KEY=]
-c, --chain <CHAIN>
The chain name or EIP-155 chain ID
[env: CHAIN=]
Wallet options - raw:
-f, --from <ADDRESS>
The sender account
[env: ETH_FROM=]
-i, --interactive
Open an interactive prompt to enter your private key
--private-key <RAW_PRIVATE_KEY>
Use the provided private key
--mnemonic <MNEMONIC>
Use the mnemonic phrase of mnemonic file at the specified path
--mnemonic-passphrase <PASSPHRASE>
Use a BIP39 passphrase for the mnemonic
--mnemonic-derivation-path <PATH>
The wallet derivation path.
Works with both --mnemonic-path and hardware wallets.
--mnemonic-index <INDEX>
Use the private key from the given mnemonic index.
Used with --mnemonic-path.
[default: 0]
--raw-unsigned
Generate a raw RLP-encoded unsigned transaction.
Relaxes the wallet requirement.
--ethsign
Call `eth_signTransaction` using the `--from` argument or $ETH_FROM as
sender
Wallet options - keystore:
--keystore <PATH>
Use the keystore in the given folder or file
[env: ETH_KEYSTORE=]
--account <ACCOUNT_NAME>
Use a keystore from the default keystores folder
(~/.foundry/keystores) by its filename
[env: ETH_KEYSTORE_ACCOUNT=]
--password <PASSWORD>
The keystore password.
Used with --keystore.
--password-file <PASSWORD_FILE>
The keystore password file path.
Used with --keystore.
[env: ETH_PASSWORD=]
Wallet options - hardware wallet:
-l, --ledger
Use a Ledger hardware wallet
-t, --trezor
Use a Trezor hardware wallet
Wallet options - remote:
--aws
Use AWS Key Management Service.
Ensure the AWS_KMS_KEY_ID environment variable is set.
--gcp
Use Google Cloud Key Management Service.
Ensure the following environment variables are set: GCP_PROJECT_ID,
GCP_LOCATION, GCP_KEY_RING, GCP_KEY_NAME, GCP_KEY_VERSION.
See: [https://cloud.google.com/kms/docs](https://cloud.google.com/kms/docs)
--turnkey
Use Turnkey.
Ensure the following environment variables are set:
TURNKEY_API_PRIVATE_KEY, TURNKEY_ORGANIZATION_ID, TURNKEY_ADDRESS.
See: [https://docs.turnkey.com/getting-started/quickstart](https://docs.turnkey.com/getting-started/quickstart)
Wallet options - browser:
--browser
Use a browser wallet
--browser-port <PORT>
Port for the browser wallet server
[default: 9545]
--browser-disable-open
Whether to open the browser for wallet connection
Display options:
--color <COLOR>
The color of the log messages
Possible values:
- auto: Intelligently guess whether to use color output (default)
- always: Force color output
- never: Force disable color output
--json
Format log messages as JSON
--md
Format log messages as Markdown
-q, --quiet
Do not print log messages
-v, --verbosity...
Verbosity level of the log messages.
Pass multiple times to increase the verbosity (e.g. -v, -vv, -vvv).
Depending on the context the verbosity levels have different meanings.
For example, the verbosity levels of the EVM are:
- 2 (-vv): Print logs for all tests.
- 3 (-vvv): Print execution traces for failing tests.
- 4 (-vvvv): Print execution traces for all tests, and setup traces
for failing tests.
- 5 (-vvvvv): Print execution and setup traces for all tests,
including storage changes and
backtraces with line numbers.