Guides effective Slack searches for messages, files, channels, and people using tools, modifiers (in:, from:, dates), strategies, and file filters.
From slack-by-salesforcenpx claudepluginhub 8gg-git/knowledge-work-plugins --plugin slack-by-salesforceThis skill uses the workspace's default tool permissions.
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This skill provides guidance for effectively searching Slack to find messages, files, and information.
Apply this skill whenever you need to find information in Slack — including when a user asks you to locate messages, conversations, files, or people, or when you need to gather context before answering a question about what's happening in Slack.
| Tool | Use When |
|---|---|
slack_search_public | Searching public channels only. Does not require user consent. |
slack_search_public_and_private | Searching all channels including private, DMs, and group DMs. Requires user consent. |
slack_search_channels | Finding channels by name or description. |
slack_search_users | Finding people by name, email, or role. |
in:, from:, date ranges).project X deadline) — Best for finding specific, exact content.Don't rely on a single search. Break complex questions into smaller searches:
in:channel-name — Search within a specific channelin:<#C123456> — Search in channel by ID-in:channel-name — Exclude a channelin:<@U123456> — Search in DMs with a userfrom:<@U123456> — Messages from a specific user (by ID)from:username — Messages from a user (by Slack username)to:me — Messages sent directly to youis:thread — Only threaded messageshas:pin — Pinned messageshas:link — Messages containing linkshas:file — Messages with file attachmentshas::emoji: — Messages with a specific reactionbefore:YYYY-MM-DD — Messages before a dateafter:YYYY-MM-DD — Messages after a dateon:YYYY-MM-DD — Messages on a specific dateduring:month — Messages during a specific month (e.g., during:january)"exact phrase" — Match an exact phrase-word — Exclude messages containing a wordwild* — Wildcard matching (minimum 3 characters before *)To search for files, use the content_types="files" parameter with type filters:
type:images — Image filestype:documents — Document filestype:pdfs — PDF filestype:spreadsheets — Spreadsheet filestype:canvases — Slack CanvasesExample: content_types="files" type:pdfs budget after:2025-01-01
After finding relevant messages:
slack_read_thread to get the full thread context for any threaded message.slack_read_channel with oldest/latest timestamps to read surrounding messages for context.slack_read_user_profile to identify who a user is when their ID appears in results.AND, OR, NOT are not supported. Use spaces (implicit AND) and - for exclusion.().slack_read_channel for the most recent messages.slack_search_public_and_private when you need to include private channels, but note this requires user consent.