Struct Backend 

pub struct Backend<'a> {
    pub client: &'a Client,
    pub base_url: &'a str,
    pub api_key: &'a str,
    pub extra_headers: &'a [(String, String)],
    pub supports_images: bool,
}

How to reach and authenticate one OpenAI-compatible backend.

Fields

client: &'a Client

Shared HTTP client.

base_url: &'a str

Base URL (.../v1), without the trailing path.

api_key: &'a str

API key; empty for trust-local endpoints.

extra_headers: &'a [(String, String)]

Extra headers (e.g. OpenRouter attribution).

supports_images: bool

Whether the model accepts image input.