Assisted-by: Claude Opus 4.6 via pi

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+---
+name: mcporter-slack
+description: Use when searching Slack, finding messages, sending messages, checking channel history, getting thread replies, adding reactions, listing channels, or getting user profiles via mcporter CLI.
+---
+
+# Slack via mcporter
+
+Use the mcporter CLI to interact with Slack. Run commands via Bash.
+
+## Syntax
+
+```bash
+mcporter call 'slack.<function>(param: "value", param2: 123)'
+```
+
+**Quote the call expression.** Parentheses have special meaning in bash; wrapping the call in single quotes prevents shell interpretation.
+
+## Common Mistakes
+
+- **Unquoted parentheses cause bash errors.** Always wrap the call in single quotes.
+- **Parentheses in OR queries silently fail.** `(from:@me OR to:@me)` returns 0 results. Write `from:@me OR to:@me` without parentheses.
+- **Emoji colons in reactions.** Use `thumbsup` not `:thumbsup:`.
+
+## Search Queries
+
+### Date Ranges
+
+```bash
+mcporter call 'slack.search(query: "from:@user OR to:@user after:2025-01-01 before:2025-01-07")'
+```
+
+### Single Day
+
+```bash
+mcporter call 'slack.search(query: "from:@user on:2025-01-15")'
+mcporter call 'slack.search(query: "from:@user on:today")'
+```
+
+### Modifiers
+
+- `from:@username` - messages sent by user
+- `to:@username` - DMs to user
+- `mentions:@username` - messages mentioning user
+- `in:#channel` - messages in specific channel
+- `before:YYYY-MM-DD` / `after:YYYY-MM-DD` - date bounds
+- `on:YYYY-MM-DD` or `on:today` - single day
+
+## Common Workflows
+
+### Find and Read a Conversation
+
+```bash
+# Search for messages
+mcporter call 'slack.search(query: "keyword in:#channel")'
+
+# Get full thread from a result
+mcporter call 'slack.get_thread_messages(channel: "#channel", thread_ts: "1234567890.123456")'
+
+# Fetch specific message with replies
+mcporter call 'slack.fetch(channel: "#channel", ts: "1234567890.123456")'
+```
+
+### Browse a Channel
+
+```bash
+# Get channel info
+mcporter call 'slack.get_channel(channel: "#general")'
+
+# Get recent messages
+mcporter call 'slack.get_channel_history(channel: "#general", limit: 50)'
+```
+
+### Send Messages
+
+```bash
+# New message
+mcporter call 'slack.send_message(channel: "#channel", text: "Hello")'
+
+# Thread reply
+mcporter call 'slack.send_message(channel: "#channel", text: "Reply", thread_ts: "1234567890.123456")'
+
+# Broadcast reply (also posts to channel)
+mcporter call 'slack.send_message(channel: "#channel", text: "Reply", thread_ts: "1234567890.123456", reply_broadcast: true)'
+```
+
+### React to Messages
+
+```bash
+mcporter call 'slack.add_reaction(channel: "#channel", timestamp: "1234567890.123456", name: "thumbsup")'
+```
+
+## Timestamps
+
+Slack uses Unix timestamps with microseconds (e.g., `1234567890.123456`). These appear as `ts` or `thread_ts` in message objects.