Metadata marker that pairs a field with one or more env var names. Env vars are tried in order; the first env var that is set is returned.

Raised when base URL is not provided via CLI argument or environment variable.

Raised when the configuration is invalid.

Raised when API key is not provided via CLI argument or environment variable.

Thin wrapper around arxiv.Client that returns legacy skill items.

Central registry of env var names and built-in defaults. Fields annotated with ``Annotated[str, EnvVar(...)]`` are resolved in ``__init__``:

Raised when Google Scholar returns a captcha or automated traffic page.

OpenAI-compatible ``/chat/completions`` adapter for text and vision.

Async client for Sensenova text-to-image API.

Anthropic Messages API adapter for text-only and vision calls.

Raised when a query asks for cryptocurrency-related material.

Async client for Google Nano Banana API.

Async client for OpenAI Image Generation API.

Uniform async interface for a single Language Model backend. Each concrete adapter wraps one LLM endpoint + model combination and exposes a s

Base exception for sn-image-base.

Uniform async interface for a single Vision Language Model backend. Each concrete adapter wraps one LLM endpoint + model combination and expo