The Deep Days

• Get Channel Info — Return structured facts about this documentary channel: name, premise, YouTube channel URL, contact email, signature sign-off, and the latest posts. No input. Read-only, no side effects. Returns JSON {name, tagline, premise, youtube, email, signoff, latest_posts: [{title, slug, url, date, description}]}.
• Search Posts — Search this site’s blog posts by keyword over title and description (case-insensitive substring), newest first. An empty or missing query matches every post. Paginated via limit/offset. Read-only, no side effects. Returns JSON {query, total, returned, offset, has_more, next_offset, posts: [{title, slug, url, date, description}]}.
• Get Post — Fetch one blog post: its metadata plus the full markdown source (which includes the frontmatter with the post’s cited sources). Input: the post slug (e.g. "why-x-happened") or its /posts/<slug>/ URL, as returned by search_posts. Read-only, no side effects. Returns JSON {slug, url, title, date, description, markdown} — or {error} for an unknown slug.
• Get Post Sources — Return the cited sources (the receipts) of one blog post: each source’s note and URL where one exists. Input: the post slug from search_posts. Read-only, no side effects. Returns JSON {slug, title, sources: [{note, url}]} — or {error} for an unknown slug.
• Open Youtube Channel — Navigate this tab to the channel’s YouTube page so the user can watch episodes or subscribe. No input. Changes the current page (reversible with the Back button); performs no purchase, login or subscription by itself. Returns JSON {status: "navigating", url}.
• Compose Contact Email — Open the user’s own email client with a pre-filled draft to the channel’s public contact address. Nothing is sent by this tool — the user reviews and sends (or discards) the draft themselves. Returns JSON {status: "mail_draft_opened", to, subject}.

Schemas and invoke metadata: Directory API