Everything that happened to one person, newest first, one act one row: their messages on every channel (ours as sends with their outcomes, theirs as replies), the ledger's facts (invites, accepts, visits, likes, stage moves, tags, tables, workflow steps), the thread pills, the tasks and the live plan, merged from the inbox and the playtables ledger through one cursor. Scope by person_sid (the whole person) or conversation_sid (a thread; linked, it is its person's timeline). Read the row in the slot kind names; a child row (an open, a click, a bounce, an accept, the invite's note) names its parent in refers_to, so fold it rather than counting it twice. No total and no counts: page with the cursor while has_more. For a thread's signals (opened, clicked, no reply, and for how long) ask get_conversation with include signals instead. 503 playtables_unavailable when playtables does not answer the ledger read: never an empty page, try again later.

Contract:

• MCP tool search_timeline, registry package mcp.unibox/timeline, mount unibox.inbox.
• Operation search, response envelope search.
• Flags: read only.