Connecting to the network

The tezos-client and Tezos RPC need to be connected to a Tezos node. You can connect to your own Tezos node or you can use a community node on the Tezos mainnet or testnet.

You can find a list of community nodes here.

If you use a testnet, you can get test XTZ from this faucet.

Tezos RPC (Remote Procedure Call)

RPC is a client-server protocol where the requesting program is the client and the program providing the service is the server.

Tezos nodes provide a JSON/RPC interface to interact with the Tezos network. Note that although it uses RPC and is JSON based, it does not follow the JSON-RPC protocol.

A complete list of RPC calls is available here. Make sure to check the protocol version before using these calls. The calls available for the current protocol are available here.

RPC call examples

Get block

This call is used to find all the information about a block. The associated metadata may not be present depending on the history mode and block distance from the head.

GET NodeUrl/chains/[chain_id]/blocks/[blocks_id]

Example: To get the block number 1400114 from the mainnet using the ECAD Labs node, do as follows:

GET https://mainnet.api.tez.ie/chains/main/blocks/1400114

Get contract storage

This call is used to access the storage of the contract.

GET NodeUrl/chains/[chain_id]/blocks/[blocks_id]/context/contracts/[contract_id]/storage

Example: To get the storage of contract KT1Hkg5qeNhfwpKW4fXvq7HGZB9z2EnmCCA9 from block number 1400114 on the mainnet using the ECAD Labs node, do as follows:

GET https://mainnet.api.tez.ie/chains/main/blocks/1400114/context/contracts/KT1Hkg5qeNhfwpKW4fXvq7HGZB9z2EnmCCA9/storage

Tezos-client (CLI)

Tezos-client is the official client when interacting with a Tezos node via RPC. Let's take a look at some examples and how to use it.

How to install

• On Mac OS with Homebrew:

$ brew install tezos-client

• On Ubuntu with binaries:

$ sudo add-apt-repository ppa:serokell/tezos && sudo apt-get update  
$ sudo apt-get install -y tezos-client

• On Fedora with binaries:

$ dnf copr enable -y @Serokell/Tezos && dnf update -y  
$ dnf install -y tezos-client

• From sources with OPAM.

Account Activation

Activate your account by replacing #accountName and #faucet below with an account name and the path to a faucet file.

$ tezos-client activate account #accountName with ~/Downloads/#faucet.json

Example :

$ tezos-client activate account user1 with ~/Downloads/tz1VH3sHQ5SNby95S9EtPQBqZrhgv2DqjPvy.json

Client manual

• For global options

$ tezos-client --help

• For command options

$ tezos-client [global options] command --help

• For version information

$ tezos-client --version

The full documentation on Tezos client can be found here.

Client examples

This is a non-exhaustive list of possible commands with tezos-client. To discover more commands, please refer to the CLI manual.

Get balance

To get the balance of your account you can execute the following command:

$ tezos-client get balance for #accountName

Get timestamp

This call is useful to check if the node is synchronized. It returns the UTC time of the latest downloaded block, timezones may differ from your local time.

$ tezos-client get timestamp

List known addresses

This call lists implicit accounts registered in your tezos-client.

$ tezos-client list known addresses

List known contracts

This call lists all accounts (implicit and smart contract) registered in your tezos-client.

$ tezos-client list known contracts

Transfers and receipts

The command line below makes a transaction of 42ꜩ from the account user1 to user2 (you can also just use the tezos addresses directly):

$ tezos-client transfer 30 from user1 to user2 --burn-cap 0.5

Notice that --burn-cap specifies the maximum fee the user is willing to pay for this operation. The actual fee is determined by the network.

You can also add --dry-run if you just want to practice by running a transaction simulation instead of a real transaction.

The receipt for this command is as follows:

Current head: BM3smBpBVtHD (timestamp: 2021-03-12T09:42:28.000-00:00, validation: 2021-03-12T09:42:38.372-00:00)Node is bootstrapped.Estimated gas: 1000 units (will add 100 for safety)Operation successfully injected in the node.Operation hash is 'oo4745Q5mq8snHYAxUYWedBCVb7yQJ7jvFhKECPN9xqgwE4Ni8A'Waiting for the operation to be included...Operation found in block: BKnKoaYqCz3dTWr66x4X1mvXC95kuozRkdd23LDuM5ZA1ayF5mi (pass: 3, offset: 0)This sequence of operations was run: Manager signed operations: From: tz1gWQz5iTP6UDkWjm1jnKsCq1HHG4hgEmJn Fee to the baker: ꜩ0.000369 Expected counter: 1412932 Gas limit: 1100 Storage limit: 0 bytes Balance updates: tz1gWQz5iTP6UDkWjm1jnKsCq1HHG4hgEmJn ............. -ꜩ0.000369 fees(tz1aWXP237BLwNHJcCD4b3DutCevhqq2T1Z9,248) ... +ꜩ0.000369 Revelation of manager public key: Contract: tz1gWQz5iTP6UDkWjm1jnKsCq1HHG4hgEmJn Key: edpktpMjpmsK6fLKGrXzhp67tRdu2m5HyzGrp1tuS8ZJBc7dGqBeAq This revelation was successfully applied Consumed gas: 1000

You can observe your actions on https://tzstats.com

tezos-admin-client

The admin client allows you to interact with the peer-to-peer layer to:

• check the status of the connections
• force connections to known peers
• ban/un-ban peers

How to install

• On Mac OS with Homebrew:

$ brew install tezos-admin-client

• On Ubuntu with binaries:

$ sudo add-apt-repository ppa:serokell/tezos && sudo apt-get update$ sudo apt-get install -y tezos-admin-client

• On Fedora with binaries:

$ dnf copr enable -y @Serokell/Tezos && dnf update -y$ dnf install -y tezos-admin-client

• From sources with OPAM.

Admin-client manual

• Global options:

$ tezos-admin-client --help

• Command options:

$ tezos-admin-client [global options] command --help

• Version information:

$ tezos-admin-client --version

The full documentation about the tezos-admin-client can be found here.

Admin-client examples

This is a non-exhaustive list of possible commands with the tezos-admin-client. To discover more commands please refer to the CLI manual.

Commands for the low-level RPC layer

• List RPCs under a given URL prefix:

$ tezos-admin-client rpc list [URL]

• Get the input and the output JSON schemas of an RPC:

$ tezos-admin-client rpc schema [HTTP method] [url]

• Get the readable input and output formats of an RPC:

$ tezos-admin-client rpc get [url]

• Call an RPC with the POST method and input params:

$ tezos-admin-client list protocols

Commands for managing protocols

• List protocols known by the node:

$ tezos-admin-client rpc post [url] with [input]

• Inject a new protocol into the node: (given_dir is the directory containing the sources of a protocol)

$ tezos-admin-client inject protocol [given_dir]

Commands to report the node's status:

• The last heads that have been considered by the node:

$ tezos-admin-client list heads [-o --output [path]]

Commands for editing and viewing the client's config file:

• Show the current config file content and command line arguments:

$ tezos-admin-client config show

• Update the config based on the current CLI values:

$ tezos-admin-client config update

• A useful command to debug a node that is not syncing:

$ tezos-admin-client tezos-admin-client p2p stat