v1
Open a new blank document as a tab in the session.
Open a fresh BLANK document as a new focused tab in the session (the tab-strip ”+”). Non-billable — no AI, no upload pipeline; it is saved on first edit. REST-only (a manual UI affordance, not an MCP tool — agents create documents through chat).
POST
Open a new blank document as a tab in the session.
Previous
List the documents open in a multi-document session.Returns the editable documents open in this session (focused first), each with its id, chunk
count, and focused flag — so a client can render document tabs. The response is token-light by
default; pass include_html=true to also get each document's reassembled HTML.
ID MAPPING (WP8-d): `document_id` is the SESSION-LOCAL slot id ("doc_primary", "doc_ab12…");
`durable_document_id` is the PERMANENT documents.id UUID — the SAME id `list_documents` (Files)
shows and `get_document_detail` / `rename_document` / `archive_document` / `open_documents`
take (null until the document's first save). focus_session_document, close_session_document,
and chat's `document_id` accept EITHER form, so you can drive a session entirely with durable
ids.
Next
Open a new blank document as a tab in the session.

