slack-communication

name	slack-communication
description	Policies for Slack communication via MCP tools. Use when interacting with Slack channels, threads, DMs, or composing Slack messages. Provides bilingual communication rules, AI disclosure requirements, and message composition guidelines.
durability	encoded-preference

Slack Communication Policies

AI Disclosure

All messages sent via Claude MUST include an AI disclosure footer. Append the following to every message payload:

• English messages: _This message was composed and posted by Claude on behalf of [user]._
• Japanese messages: _このメッセージはClaudeが[user]の代理で作成・投稿しました。_
• Bilingual messages: Include both disclosures

Bilingual Policy

Japanese Messages

• Use desu/masu form as default
• Match the honorific level (keigo) of the conversation participants
• Keep technical terms in English (e.g., "deploy", "PR", "CI/CD") when that is the channel norm
• When the thread is new or the language is ambiguous, ask the user which language to use

Confirmation Requirement

Never send a message without explicit user approval. The workflow is:

1. Draft the message with AI disclosure footer appended
2. Present the complete message to the user
3. Send only after explicit approval

Mark as Read Policy

• After sending a reply via /reply-to-slack: the REPLY subagent marks the channel/thread as read
• After completing a Slack task without a reply (e.g., processed externally): the main session marks the channel/thread as read using mcp__slack__conversations_mark
• Case 3 items (conversation completed): ask the user to confirm, then mark as read

Anti-Patterns

• Sending messages without AI disclosure footer
• Sending without user confirmation
• Replying in a different language than the conversation thread
• Using conversations_unreads -- too slow on large workspaces. Use conversations_search_messages with to:me, @<username>, and filter_users_with/filter_threads_only instead