# `Onchain.Solana.Transaction.Header`
[🔗](https://github.com/ZenHive/onchain-stack/blob/onchain_solana-v0.1.0/packages/onchain_solana/lib/onchain/solana/transaction.ex#L48)

Message header with account permission counts.

# `t`

```elixir
@type t() :: %Onchain.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*