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Claude Agent SDK for Elixir – Build AI agents with Claude Code

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claude_code lib claude_code hook output post_tool_use.ex
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lib/claude_code/hook/output/post_tool_use.ex 

defmodule ClaudeCode.Hook.Output.PostToolUse do

  @moduledoc """

  Hook-specific output for `PostToolUse` events.



  Observation-only — cannot block the tool (it already ran).



  Shorthand: `{:ok, additional_context: "..."}`.



  ## Fields



    * `:additional_context` - extra context injected into the conversation

    * `:updated_mcp_tool_output` - replacement output for MCP tool results

  """

  alias ClaudeCode.Hook.Output



  @type t :: %__MODULE__{

          additional_context: String.t() | nil,

          updated_mcp_tool_output: term() | nil

        }



  defstruct [:additional_context, :updated_mcp_tool_output]



  def to_wire(%__MODULE__{} = o) do

    %{"hookEventName" => "PostToolUse"}

    |> Output.maybe_put("additionalContext", o.additional_context)

    |> Output.maybe_put("updatedMCPToolOutput", o.updated_mcp_tool_output)

  end

end