Slack

Use the slack tool. Reuse channelId and Slack timestamp message IDs from context when present.

Inputs

• channelId: Slack channel ID.
• messageId: Slack timestamp, e.g. 1712023032.1234.
• to: channel:<id> or user:<id> for sends.
• emoji: Unicode or :name: for reactions.

Actions

{ "action": "sendMessage", "to": "channel:C123", "content": "Hello" }