# `Replicant.Decoder.Messages.StreamStart`
[🔗](https://github.com/baselabs/replicant/blob/v0.3.1/lib/replicant/decoder/messages.ex#L141)

`S` — begins/continues a streamed transaction's segment (spec §5); carries the top-level xid and first-segment flag.

# `t`

```elixir
@type t() :: %Replicant.Decoder.Messages.StreamStart{
  first_segment: boolean() | nil,
  xid: non_neg_integer() | nil
}
```

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