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Mantle’s command center searches messages across the workspace you are currently viewing and the direct messages you are allowed to access.

Search on every plan

Free, Pro, Team, and Enterprise include lexical message search. It is designed for:
  • exact words and phrases;
  • names, identifiers, and channel names;
  • small spelling mistakes;
  • filters such as from:@person and in:#channel.

Semantic search on Team

Team and Enterprise organizations also receive semantic search. Semantic search compares the meaning of a question with the meaning of messages, so it can find a useful result even when the wording is different. For example, a search for what delayed the phone app? can find a message that says the mobile release was postponed because battery consumption doubled.
Semantic search is an organization entitlement. A personal Pro subscription does not enable it inside a Free organization.

Plan changes

  • When an organization upgrades to Team, Mantle starts creating semantic search data for its existing workspaces and direct-message history. Keyword search continues working while that background backfill completes.
  • New messages are added automatically while Team remains active.
  • If the organization leaves Team, semantic results stop immediately and searches fall back to lexical matching.
  • A cancellation scheduled for the end of the billing period keeps semantic search active until Team access actually ends.

Privacy and permissions

Search never changes who can read a message. Mantle applies current workspace membership, direct-message participation, archive state, and workspace search settings before returning results. Workspace owners and admins can disable message indexing in Workspace Settings. Disabling it removes that workspace’s derived search data; re-enabling it schedules a new backfill. Semantic search uses an embedding provider to turn eligible message text and search queries into numerical meaning representations. The vectors are stored in Mantle’s PostgreSQL database and are not AI-generated answers or message summaries.