Slack Skill
by Anthropic
Draft Slack messages and threads that match your channel norms. Reference skill from the Anthropic skills repo.
Skills
Slack Skill
Added 17 May 2026
Overview
The Slack skill encodes the conventions of writing for Slack: thread-first replies, the channel-tone difference, when to use emoji reactions vs replies, when to thread and when not to. Pairs with the Slack MCP server for a full read-think-post loop.
Best for
Best for
Teams whose internal comms quality varies across people and channels
Use cases
- Draft a thoughtful Slack reply in the right tone for the channel
- Compose a launch announcement that respects channel norms
- Summarise a long thread into the right reply format
- Standardise team-comms style across many people posting
Notes
Why it matters
Slack is the comms layer for most engineering and ops teams. A skill that gets the medium right delivers a quality lift across every internal message the agent writes.
How teams use it in production
Combine the Slack skill with the team’s internal comms skill. The first handles medium; the second handles the org-specific voice.
What to watch
The same pattern will land for Teams, Discord, and email. Medium-specific skills are the right abstraction for comms.
Pros
- Encodes hard-to-teach Slack tone rules in one skill
- Pairs with Slack MCP for a read-write loop
- Cheap upgrade to existing internal-comms workflows
- Fork-friendly for org-specific channel conventions
Cons
- Slack-specific, not a general comms skill
- Channel-specific tone still benefits from local context
- Cannot replace human judgement on emotionally loaded threads
Pairs with
Other entries in the index that connect to this one. Click through to see the chain.