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Claude Agent SDK for Elixir – Build AI agents with Claude Code
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lib/claude_code/hook/output/session_start.ex
defmodule ClaudeCode.Hook.Output.SessionStart do
@moduledoc """
Hook-specific output for `SessionStart` events.
Observation-only — fires when the session initializes.
Shorthand: `{:ok, additional_context: "..."}`.
## Fields
* `:additional_context` - extra context injected into the conversation
"""
alias ClaudeCode.Hook.Output
@type t :: %__MODULE__{
additional_context: String.t() | nil
}
defstruct [:additional_context]
def to_wire(%__MODULE__{} = o) do
Output.maybe_put(%{"hookEventName" => "SessionStart"}, "additionalContext", o.additional_context)
end
end