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hermes_mcp

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Model Context Protocol (MCP) implementation in Elixir with Phoenix integration

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hermes_mcp lib hermes server handlers.ex
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lib/hermes/server/handlers.ex 

defmodule Hermes.Server.Handlers do

  @moduledoc false



  alias Hermes.MCP.Error

  alias Hermes.Server.Frame

  alias Hermes.Server.Handlers.Prompts

  alias Hermes.Server.Handlers.Resources

  alias Hermes.Server.Handlers.Tools

  alias Hermes.Server.Response



  @spec handle(map, module, Frame.t()) ::

          {:reply, response :: Response.t(), new_state :: Frame.t()}

          | {:noreply, new_state :: Frame.t()}

          | {:error, error :: Error.t(), new_state :: Frame.t()}

  def handle(%{"method" => "tools/" <> action} = request, module, frame) do

    case action do

      "list" -> Tools.handle_list(frame, module)

      "call" -> Tools.handle_call(request, frame, module)

    end

  end



  def handle(%{"method" => "prompts/" <> action} = request, module, frame) do

    case action do

      "list" -> Prompts.handle_list(frame, module)

      "get" -> Prompts.handle_get(request, frame, module)

    end

  end



  def handle(%{"method" => "resources/" <> action} = request, module, frame) do

    case action do

      "list" -> Resources.handle_list(frame, module)

      "read" -> Resources.handle_read(request, frame, module)

    end

  end



  def handle(%{"method" => method}, _module, frame) do

    {:error, Error.protocol(:method_not_found, %{method: method}), frame}

  end

end