Fetch a UNIHODL session as Resume Context — the human's open tabs, scroll positions, video timestamps, AI-tagged decision thread, partial conclusions, and intended next step. Read-only and idempotent: it never modifies the session. Use it when you have a session_id (from list_sessions or the user) and need the human's working context before continuing their task; to discover sessions instead, use list_sessions. Returns a prompt-ready text block by default, or the raw Resume Context object with format 'json'. Errors: a malformed session_id is rejected before any network call; an unknown, expired, or revoked session returns an error message stating the reason.

List sessions in the workspace the configured API key can read, newest first, with cursor pagination. Read-only, no side effects. Returns {sessions: [{session_id, title, summary, captured_at, ai_tags}], next_cursor}. Pass any session_id to the resume tool for the full context; pass next_cursor back as cursor to fetch the next page (null means no more pages). Use this to discover what the human was working on when you do not already have a session_id — if you have one, call resume directly. Sandbox keys see the demo workspace. Errors: a malformed cursor or since value returns an error stating the expected format.