Add a Signer

Adds a new member (a pubkey + permission mask) to a controlled smart account — one that has a settings_authority. The change is authorized by that authority's signature alone; no proposal is needed.

Controlled accounts only. An autonomous account changes its membership through a settings transaction (the AddSigner action) instead. Adding a signer grows the settings account, so a rent_payer funds the reallocation.

Program method — add_signer_as_authority

Signs with payer + settings_authority + rent_payer, then sends.

Parameter	Type	Required	Default	Description
payer	Keypair	yes	—	Pays the fee; co-signs.
settings	#to_s	yes	—	The settings account address.
settings_authority	#to_s · Keypair	yes	—	The account's settings authority; must sign.
rent_payer	#to_s · Keypair	yes	—	Funds the settings-account reallocation; must sign.
new_signer	SmartAccountSigner	yes	—	The member to add (pubkey + permission mask).
memo	String	no	nil	Optional indexing memo.

Plus the shared sign: / execute: controls and Solace::Transaction return — see Conventions.

program.add_signer_as_authority(
  payer:              authority,
  settings:           identity.settings_address,
  settings_authority: authority,
  rent_payer:         authority,
  new_signer:         Solace::SquadsSmartAccounts::SmartAccountSigner.new(
    pubkey:     new_member.address,
    permission: Solace::SquadsSmartAccounts::Permissions::VOTE
  )
)

Composer — SquadsSmartAccountsAddSignerAsAuthorityComposer

Parameter	Type	Required	Default	Description
settings	#to_s	yes	—	The settings account address.
settings_authority	#to_s · Keypair	yes	—	The settings authority; must sign.
rent_payer	#to_s · Keypair	yes	—	Funds reallocation; must sign.
new_signer	SmartAccountSigner	yes	—	The member to add.
memo	String	no	nil	Indexing memo.

composer = Solace::Composers::SquadsSmartAccountsAddSignerAsAuthorityComposer.new(
  settings:           identity.settings_address,
  settings_authority: authority.address,
  rent_payer:         authority.address,
  new_signer:         Solace::SquadsSmartAccounts::SmartAccountSigner.new(
    pubkey:     new_member.address,
    permission: Solace::SquadsSmartAccounts::Permissions::VOTE
  )
)

tx = Solace::TransactionComposer.new(connection:)
                                .add_instruction(composer)
                                .set_fee_payer(authority)
                                .compose_transaction

tx.sign(authority)
connection.send_transaction(tx.serialize)

Low-level instruction (advanced)

• Discriminator: [80, 198, 228, 154, 7, 234, 99, 56]
• Encodes (data): pubkey(new_signer.pubkey) + permission byte + option_string(memo)

Parameter	Type	Required	Default	Description
new_signer	SmartAccountSigner	yes	—	The member to add.
memo	String, nil	yes	—	Indexing memo, or nil.
settings_index	Integer	yes	—	Index of the settings account.
settings_authority_index	Integer	yes	—	Index of the settings authority.
rent_payer_index	Integer	yes	—	Index of the rent payer.
system_program_index	Integer	yes	—	Index of the System program.
program_index	Integer	yes	—	Index of the Squads program.

ix = Solace::SquadsSmartAccounts::Instructions::AddSignerAsAuthorityInstruction.build(
  new_signer:,
  memo:                     nil,
  settings_index:           context.index_of(settings),
  settings_authority_index: context.index_of(settings_authority),
  rent_payer_index:         context.index_of(rent_payer),
  system_program_index:     context.index_of(Solace::Constants::SYSTEM_PROGRAM_ID),
  program_index:            context.index_of(Solace::SquadsSmartAccounts::PROGRAM_ID)
)