Guidance for composing well-formatted, effective Slack messages using mrkdwn syntax
This skill does not declare a tool allowlist. The agent host applies whatever default tools are available at runtime.
SKILL.md / Manifest
https://raw.githubusercontent.com/anthropics/knowledge-work-plugins/main/partner-built/slack/skills/slack-messaging/SKILL.mdRegistry
github (via claudemarketplaces.com)