Tiangong KB Textbook Search

Use this skill for Tiangong textbook-source retrieval. It is intentionally single-source: always search textbook, never all, course, or edu.

Prerequisites

• The wrapper defaults to npx @tiangong-ai/cli@latest; users do not need a preinstalled CLI. Set TIANGONG_AI_CLI or TIANGONG_AI_CLI_BIN only to override the CLI entrypoint.
• Set the authentication environment variables expected by tiangong-ai.
• When request_file / input_file is provided, the wrapper loads .env from that file's directory by default. env_file can point to a different dotenv file. Loaded dotenv values only fill unset environment variables; explicit JSON fields such as api_key, textbook_api_key, and api_base_url are passed as CLI flags and take precedence.
• Optionally set TIANGONG_AI_API_BASE_URL; the CLI accepts a Supabase project root, /functions/v1, or /rest/v1 and derives Functions URLs.