-record(agent_config, {
    client :: claude@client:config(),
    model :: binary(),
    max_tokens :: integer(),
    system :: gleam@option:option(binary()),
    tools :: claude@types@tool:registry(),
    tool_choice :: gleam@option:option(claude@types@tool:tool_choice()),
    thinking :: gleam@option:option(integer()),
    max_iterations :: integer(),
    tool_timeout_ms :: integer()
}).