Subshell Cheatsheet

• get chain name

> api.runtimeChain.toHuman()

• get ss58 prefix

> api.consts.system.ss58Prefix.toHuman()

• get current block

> (await api.query.system.number()).toNumber()

• get runtime metadata version

> api.runtimeMetadata.version

• list accounts in Polkadot.js extension wallet

> await Subshell.extension?.web3Accounts()

• show account selection modal and select an account from the Polkadot.js extension wallet

> await Subshell.extension?.selectAccount()

• sign the message BTW I USE SUBSHELL with selected account, and verify the signature

> import { signatureVerify } from "@polkadot/util-crypto"
> const addr = await Subshell.extension.selectAccount()
> const msg = 'BTW I USE SUBSHELL'
> const sig = await api.sign(addr, {data: msg})
> signatureVerify(msg, sig, addr)

• sign and send the tx api.tx.system.remark('BTW I USE SUBSHELL') with selected account

> await api.tx.system.remark('BTW I USE SUBSHELL').signAndSend(await Subshell.extension?.selectAccount())

• show tx docs and args, etc.

> api.tx.system.remark

• show event docs and args, etc.

> api.events.balances.Transfer

• query total issuance of native currency

> (await api.query.balances.totalIssuance()).toHuman()

• query account balance

> (await api.query.system.account(await Subshell.extension?.selectAccount())).toHuman()

• ...

For more examples, please visit https://wiki.subshell.xyz