List the most recent AI Daily Insights issues (date, title, one-line summary, tags, URLs). Start here to discover what is available.

Fetch the most recent issue, parsed into structured news items {index, title, signal, body}. Use this when the user asks for today's / the latest AI news and does not give a date.

Fetch a single daily issue by date, parsed into structured news items: each item has index, title, signal (the one-line judgment) and body. Date format: YYYY-MM-DD.

Fetch every issue whose date falls within [from, to] (inclusive), each parsed into structured news items. Use for "the past week", "between X and Y", etc. Dates are YYYY-MM-DD. Issues are fetched in parallel.

List issues that carry a given tag (e.g. a company or topic like "OpenAI", "融资", "芯片"). Returns issue-level entries; use search() to find specific news items by keyword.

Full-text + tag search across all news items. Provide a keyword query, a tag, or both. Returns matching items with date, title, signal and a short snippet. Backed by the site search endpoint (one call); falls back to the flat index if unavailable.