HMY CLI Download

The Harmony CLI tool is used to interact with the Harmony blockchain.

Throughout this guide, we will use the following syntax:

  • ./hmy: This is the CLI program

  • ./ -- : This is the command to use the CLI with a shell wrapper (for macOS)

  • <argument>: This is a required argument

  • [argument]: This is an optional argument

  • / : This is a line break, used to break up a line while writing a command

Download Harmony CLI tool

1. For Linux

curl -LO && mv hmycli hmy && chmod +x hmy

2. For MacOS

curl -O
chmod u+x
./ -d

Now you can use as a wrapper over hmy and you should assume that all references to hmy in these documents refer to For example, the command ./hmy becomes ./ -- .

Note that since hmy is not statically linked, you cannot arbitrarily move to anywhere on your filesystem like you could with a single binary.

For example calling the cookbook on MacOS it would look like:

./ -- --node="" cookbook

Now on Linux, it would look like:

./hmy --node="" cookbook


#Cookbook of Usage
#1) Every subcommand recognizes a '--help' flag
#2) If a passphrase is used by a subcommand, one can enter their own passphrase interactively
# with the --passphrase option. Alternatively, one can pass their own passphrase via a file
# using the --passphrase-file option. If no passphrase option is selected, the default
# passphrase of '' is used.
#3) These examples use Shard 0 of Open Staking Network as argument for --node
#1. Check account balance on given chain
./hmy --node="" balances <SOME_ONE_ADDRESS>
#2. Check sent transaction
./hmy --node="" blockchain transaction-by-hash <SOME_TX_HASH>
#3. List local account keys
./hmy keys list
#4. Sending a transaction (waits 40 seconds for transaction confirmation)
./hmy --node="" transfer \
--from-shard 0 --to-shard 1 --amount 200 --passphrase
#5. Sending a batch of transactions as dictated from a file (the `--dry-run` options still apply)
./hmy --node="" transfer --file <PATH_TO_JSON_FILE>
#Check README for details on json file format.
#6. Check a completed transaction receipt
./hmy --node="" blockchain transaction-receipt <SOME_TX_HASH>
#7. Import an account using the mnemonic. Prompts the user to give the mnemonic.
./hmy keys recover-from-mnemonic <ACCOUNT_NAME>
#8. Import an existing keystore file
./hmy keys import-ks <PATH_TO_KEYSTORE_JSON>
#9. Import a keystore file using a secp256k1 private key
./hmy keys import-private-key <secp256k1_PRIVATE_KEY>
#10. Export a keystore file's secp256k1 private key
./hmy keys export-private-key <ACCOUNT_ADDRESS> --passphrase
#11. Generate a BLS key then encrypt and save the private key to the specified location.
./hmy keys generate-bls-key --bls-file-path <PATH_FOR_BLS_KEY_FILE>
#12. Create a new validator with a list of BLS keys
./hmy --node="" staking create-validator --amount 10 --validator-addr <SOME_ONE_ADDRESS> \
--bls-pubkeys <BLS_KEY_1>,<BLS_KEY_2>,<BLS_KEY_3> \
--identity foo --details bar --name baz --max-change-rate 0.1 --max-rate 0.1 --max-total-delegation 10 \
--min-self-delegation 10 --rate 0.1 --security-contact Leo --website --passphrase
#13. Edit an existing validator
./hmy --node="" staking edit-validator \
--validator-addr <SOME_ONE_ADDRESS> --identity foo --details bar \
--name baz --security-contact EK --website \
--min-self-delegation 0 --max-total-delegation 10 --rate 0.1\
--add-bls-key <SOME_BLS_KEY> --remove-bls-key <OTHER_BLS_KEY> --passphrase
#14. Delegate an amount to a validator
./hmy --node="" staking delegate \
--delegator-addr <SOME_ONE_ADDRESS> --validator-addr <VALIDATOR_ONE_ADDRESS> \
--amount 10 --passphrase
#15. Undelegate to a validator
./hmy --node="" staking undelegate \
--delegator-addr <SOME_ONE_ADDRESS> --validator-addr <VALIDATOR_ONE_ADDRESS> \
--amount 10 --passphrase
#16. Collect block rewards as a delegator
./hmy --node="" staking collect-rewards \
--delegator-addr <SOME_ONE_ADDRESS> --passphrase
#17. Check elected validators
./hmy --node="" blockchain validator elected
#18. Get current staking utility metrics
./hmy --node="" blockchain utility-metrics
#19. Check in-memory record of failed staking transactions
./hmy --node="" failures staking
#20. Check which shard your BLS public key would be assigned to as a validator
./hmy --node="" utility shard-for-bls 2d61379e44a772e5757e27ee2b3874254f56073e6bd226eb8b160371cc3c18b8c4977bd3dcb71fd57dc62bf0e143fd08


Frequently encountered errors:

./hmy cookbook
-bash: ./hmy: cannot execute binary file: Exec format error
​#Make sure you downloaded the right version for your OS.