# `Cartouche.Solana.Transaction.Header`
[🔗](https://github.com/zenhive/cartouche/blob/main/lib/cartouche/solana/transaction.ex#L46)

Message header with account permission counts.

# `t`

```elixir
@type t() :: %Cartouche.Solana.Transaction.Header{
  num_readonly_signed_accounts: non_neg_integer(),
  num_readonly_unsigned_accounts: non_neg_integer(),
  num_required_signatures: non_neg_integer()
}
```

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*Consult [api-reference.md](api-reference.md) for complete listing*