Small console toolset for getting information about Substrate nodes and working with smart contracts.
At the moment, implemented in Typescript. In future, it is going to be ported to Rust with usage of substrate-subxt.

Installation

Add yarn binaries folder into yout PATH:

echo "export PATH=$(yarn global bin):$PATH" >> ~/.bashrc
source ~/.bashrc

Link binaries into yarn folder:

cd typescript
yarn install
yarn run tsc
./bind.sh

Tools

All binaries accept --url option for selecting node.
E.g. rpc-info --url $(cat kusama.url) will grab metadata from Kusama network.
By default, ws://127.0.0.1:9944 is used.

rpc-info: metadata and couple of other bits

rpc-events: log of emitted events
Any argument is treated as module name to filter events with.
It must be prefixed with + or - to determine mode of filtering.
Use --decode-bytes MyEvent or --decode-bytes [Event1 Event2 Event3]
to decode byte fields with UTF-8 encoded text into human-readable text.

rpc-balances: subscribe to balances changes
Provide a list of accounts to monitor, URIs like //Alice are also supported.

• --evm for monitoring EVM balances

rpc-blocks: log of produced blocks

• --new for subscribing to fresh blocks
• --old for dumping historical blocks
• --all for both historical blocks and new ones
• --header for displaying headers instead of hashes
• --full for displaying full content of blocks
• --pretty for pretty-printing jsons

rpc-transfer: transfer funds between accounts
Example: rpc-transfer //Alice 1DEV //Bob

rpc-contracts: uploading, instantiating and calling smart contracts

• -s, --seed: specifies key to sign transactions
• -g, --gas: specifies gas limit for any supported operation
• deploy uploads contract code to the chain
• -f, --file: path to the code
• instantiate uses uploaded code and creates an instance of the contract
• -h, --hash: refers to the code stored on-chain
• -e, --endowment: amount to transfer with this operation
• -d, --data: SCALE-encoded data to transfer with this operation
• call runs a method attached to the contract, possibly transfers funds as well
• -a, --address: address of the contract to call
• -e, --endowment: amount to transfer with this operation
• -d, --data: SCALE-encoded data to transfer with this operation
• info retrieves information and all storage entries of the contract
• -a, --address: address of the contract to inspect

rpc-evm: creating/calling contracts and depositing/withdrawing EVM accounts

• -s, --seed: specifies key to sign transactions
• create uploads contract code to the chain
• -f, --file: path to the code (you can use -c as well)
• -c, --code: hex-encoded code (you can use -f as well)
• -e, --endowment: amount to transfer with this operation
• -p, --price: gas price
• -g, --gas: gas limit
• call runs a method attached to the contract, possibly transfers funds as well
• -a, --address: address of the contract to call
• -d, --data: data to transfer with this operation
• -e, --endowment: amount to transfer with this operation
• -p, --price: gas price
• -g, --gas: gas limit
• info retrieves a single (so far) storage entry by its index
• -a, --address: address of the contract to inspect
• -i, --index: index of the entry to retrieve
• deposit refills EVM balance using Substrate balance
• -a, --amount: amount to deposit
• withdraw refills Substrate balance using EVM balance
• -a, --amount: amount to withdraw
• selector emits first 10 characters of Keccak hash,
  use this with function signatures like flip()

Uninstallation

To remove binaries from PATH:

yarn unlink