How to add custom account types?

[chiefbiiko]

Been trying to create a custom account type, so that those accounts appear in Flask.

Forked metamask/accounts and added the relevant account types in:

• keyring-api/src/myapp/index.ts
• keyring-api/src/myapp/types.ts
• keyring-api/src/api/account.ts
• keyring-api/src/index.ts
• keyring-internal-api/src/types.ts

Still when trying to create such a custom account it throws:

MetaMask - RPC Error: At path: params.account.type -- Expected one of `"eip155:eoa","eip155:erc4337","bip122:p2wpkh","solana:data-account"`, but received: "myapp:v0"

What am I missing? Do custom account types require any changes on the Flask side, like it needs the forked keyring-internal-api?

[danroc]

Custom account types are not supported yet. Can say a bit more why you want to add a new account type and why the existing ones are not enough?

[chiefbiiko]

We are building a snap to support shielded transactions. Its a whole different key pair and having a custom account type would allow for deeper integration.