Generate multiple keypairs for mnemonic

[nikkolasg]

Component

Anvil

Describe the feature you would like

It would be nice to have the ability to ask Anvil to spit out the private keys into a JSON file or stg as to enable programmatic interaction with it (instead of manually copy paste the key(s)).

Additional context

No response

[mattsse]

I'm not in favor of support this via rpc calls or anything that needs to interact with a running node, but I agree that would be a nice feature to have.

we have the cast wallet command which generates single keypairs, I'd propose we add support for mnemonic key generation, I don't think we have something like this yet, right @onbjerg ?

something like cast wallet mnemonic "...." with an --anvil flag to dump the default keys?

[nikkolasg]

I'm not in favor of support this via rpc calls or anything that needs to interact with a running node

Oh no I was thinking stg far more simpler like anvil --secrets-to keys.json when you start anvil or stg. That way, when you start anvil you can programmatically get the already-funded private keys easily (instead of doing the parsing yourself).

[mattsse]

right,

anvil --secrets-to keys.json that makes sense, but will also need some additional arguments, like mnemonic, hdpath, index perhaps, (same that anvil supports)

I think this would be useful on its own and is not limited to anvil.

we could add this to cast wallet which is more fitting I believe, but could then reuse this for anvil as well.

[nikkolasg]

anvil --secrets-to keys.json that makes sense, but will also need some additional arguments, like mnemonic, hdpath, index perhaps, (same that anvil supports)

I guess in the end, what this feature is about is get all the info anvil prints out in a easily parsable fashion instead of handwriting regexp, so maybe anvil --info-out info.json or stg to also add the mnemonics etc.
Also a good idea for cast wallet for sure yeah !

[onbjerg]

Currently cast wallet only operates on a single JSON keystore, but it is also a bit broken last time I tried it. The details are in another issue related to keystores: #926

[gakonst]

@robertabbott check this out

[PatrickAlphaC]

Additional context: #3818

[zerosnacks]

Marking as complete, requested feature is available using anvil --config-out and loading a mnemonic in an encrypted keystore was added here: #3818