Google Gemini provider implementation.

Supports Gemini models via the Google AI Generative Language API.

Usage

# Basic usage
{:ok, response} = Nous.Providers.Gemini.chat(%{
  model: "gemini-2.0-flash-exp",
  contents: [%{"role" => "user", "parts" => [%{"text" => "Hello"}]}]
})

# With system instruction
{:ok, response} = Nous.Providers.Gemini.chat(%{
  model: "gemini-2.0-flash-exp",
  systemInstruction: %{"parts" => [%{"text" => "You are helpful."}]},
  contents: [%{"role" => "user", "parts" => [%{"text" => "Hello"}]}],
  generationConfig: %{"temperature" => 0.7, "maxOutputTokens" => 1024}
})

# Streaming
{:ok, stream} = Nous.Providers.Gemini.chat_stream(params)
Enum.each(stream, fn event -> IO.inspect(event) end)

Configuration

# In config.exs
config :nous, :gemini,
  api_key: "AIza...",
  base_url: "https://generativelanguage.googleapis.com/v1beta"  # optional

Note on Authentication

Unlike OpenAI/Anthropic which use headers, Gemini uses query parameter auth: ?key=API_KEY