Add a new llms.txt (https://llmstxt.org) by URL. Fetches and caches the document locally. Use when the user wants to save, import, or subscribe to an llms.txt.

Update name, url, or description of an llms.txt entry by id. Re-fetches if url changes. Call list first if you don't have the id.

Delete an llms.txt entry and its cached content by id. Call list first if you don't have the id.

List all saved llms.txt entries (id, name, url, description). Use when the user asks what's available, or to look up an id for other tools.

Read the content of a stored llms.txt document by id. Call list first if you don't have the id.