API capability pack for bounded Slack Web API calls against https://slack.com/api only. Reads auth identity, users, conversations, members, channel history, thread replies, message permalinks, reactions, file metadata, bookmarks, and pinned items, and supports approval-gated message posting, thread replies, message updates, emoji reactions, bookmark creation, and message pinning. Bundles a scheduled channel activity digest, an AI-assisted thread brief, and an approval-gated channel update workflow. This is intended for daily personal, team, and one-person-company communication workflows: inspect channels, find people, summarize recent messages, reply in context, correct a sent bot/user message, save useful channel links, pin important messages, inspect shared file metadata, and acknowledge work with a reaction. Enroll a Slack bot or user token connection as bearer auth; no credential is embedded in the manifest. The pack intentionally excludes message deletes, channel create/archive/rename/topic/purpose changes, open/join/leave/invite/kick flows, file upload/download/delete, bookmark edit/remove, pin remove, user/admin/profile mutation, reminders, stars, workflow/view APIs, SCIM/Audit Logs/Admin APIs, search passthrough, and arbitrary Web API passthrough.